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Đề thi thử thpt quốc gia môn Tiếng Anh cực hay có lời giải chi tiết ( Đề số 2)
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Đề thi thử thpt quốc gia môn Tiếng Anh cực hay có lời giải chi tiết ( Đề số 2)

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VietJack
Tiếng AnhTốt nghiệp THPT4 lượt thi
50 câu hỏi
1. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part is pronounced differently from others

nasty

hasty

tasty

wastage

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2. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part is pronounced differently from others

prose

whose

disclose

chosen

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3. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

attract

marry

demand

connect

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4. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

independence

experiment

individual

reputation

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5. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions

Ernest Hemingway wrote The Old Man and the Sea, in addition to a number of the other work

wrote

in addition

other

work

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6. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions

Don’t get angry with me for your failure. You are yourself to blame by it and it is nobody else’s fault

get angry

yourself

by

else's fault

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7. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions

In my country we have to do nine core subjects and then we can choose several other

to do

core

and then

other

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8. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

We ________be going to France this summer, but we’re not sure yet

can

must

would

might

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9. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

He packed ________his job and went traveling in Nepal

off

away

out

in

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10. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

The jury________her compliments on her excellent knowledge of the subject

paid

gave

made

said

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11. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

Be careful! Don’t ________your drink on the table

spill

spread

flood

flow

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12. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

“The baby is crying! Will you ________while 1 prepare his milk?”

look him up

look after him

care about him

make him up

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13. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

The driver________control of the vehicle and crashed into a bus

lost

missed

failed

dropped

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14. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. On the way the bus stopped to pick up a ________

customer

rider

pedestrian

passenger

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15. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. I am ________tired to think about that problem at the moment.

simply

nearly

far too

much more

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16. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. : ________anything else, please ring the bell for the attendant.

Should you require

You should require

If you are requiring

Were you to require

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17. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Monica is ________for her ambition and determination by all of her teachers.

praised

approved

congratulated

cheered

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18. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. They froze in ________when they saw the lion.

shock

horror

panic

fright

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19. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

I can’t find those new socks I bought. I ________them in the store

should have left

must have left

have left

ought to have left

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20. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable respond to complete each of the following exchanges

Kelly: “I think that people are buying more than they actually need. What do you think?”Jack: ________, especially in this time of economic crises.”

I don’t think so

I think the other way

I don’t, either

I think opposite

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21. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable respond to complete each of the following exchanges

Peter: "Is it important? " Tom: ________

not on your life

It's a matter of life and death

No worry, that's nothing

It's ridiculous

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22. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the word (s) OPPOSITE in meaning to the underlined word (s) in the following question

The principal objectives of ASEAN, outlined in the Bangkok Declaration (1976), were to accelerate economic growth and promote peace and stability.

maintain

predict

speed up

slow down

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23. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the word (s) OPPOSITE in meaning to the underlined word (s) in the following question

They are going to demolish the old theater to make way for the new apartment complex

pull down

throw away

rebuild

decorate

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24. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A,B,C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions

The difference between British and American English are comparatively small

extremely

relatively

surprisingly

straightly

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25. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A,B,C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions

The Present is taking deliberate steps to balance the federal budget

thoroughly planned

intentional

purposeful

accidental

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26. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions

Tom would sooner do without a car than pay all that money for one

Tom thinks the price is right, but he can’t afford it

Tom thinks the price is too high, but he must have the car

Tom is soon going to buy a car

Tom would never buy a car costs so much

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27. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions

It’s no use trying to persuade Tom to change his mind

There’s no point to try to persuade Tom to change his mind

It’s worth trying to persuade Tom to change his mind

It’s useful trying to persuade Tom change his mind

It’s a waste of time trying to persuade Tom to change his mind

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28. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions

His story was so funny that it made us all laugh

His story was too funny to laugh

His story couldn’t make us laugh

His story was very funny and we couldn’t help laughing

We all laughed at him for his story

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29. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate that best combine this pair of sentences in the following questions

Mike has expertise in gardening. Mike is an accomplished carpenter

Beside gardening, Mike is an accomplished carpenter as well

Despite his expertise in gardening, Mike is an accomplished carpenter.

Due to his expertise in gardening, Mike is an accomplished carpenter

Besides his expertise in gardening, Mike is also an accomplished carpenter

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30. Trắc nghiệm
1 điểmKhông giới hạn

Mark the letter A, B, C or D on your answer sheet to indicate that best combine this pair of sentences in the following questions

My friends are good at drawing. I am good at drawing

My friends are good at drawing, and I do, too

Both my friends and I am good at drawing

My friends are good at drawing and so I am

Neither my friend nor I am good at drawing

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31. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer for each of the blanks.

THE BENEFITS OF JOINING A SPORTS CLUB

      Everyone, old or young, should think about joining a sports club. There are many benefits of being a (31)________of a club. First of all, you have the opportunity not just to play your favorite sport on a regular basis, but also to improve. Most clubs have training sessions or even professionals who (32)________lessons. Secondly, it’s a chance to meet people who enjoying doing the same things as you so you will probably get (33)________with them and end up with a good network of friends. Also these clubs usually have an excellent social life as they arrange parties and special occasions at the club where you can meet to talk and eat together and generally have a good time. Many people (34)________up sports in their early teens but it is good idea to continue as doing sport is a way of relieving stress and giving you more energy as well as being a good break from your studies. Best of all, a lot of clubs can arrange to get tickets for top sporting events that are hard to (35)________This means you can often get front row seats for matches and competitions in your favorite sport, or you may even be able to see your favorite team. Well worth joining!

Điền vào ô số 31

fellow

member

representative

associate

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32. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer for each of the blanks.

THE BENEFITS OF JOINING A SPORTS CLUB

      Everyone, old or young, should think about joining a sports club. There are many benefits of being a (31)________of a club. First of all, you have the opportunity not just to play your favorite sport on a regular basis, but also to improve. Most clubs have training sessions or even professionals who (32)________lessons. Secondly, it’s a chance to meet people who enjoying doing the same things as you so you will probably get (33)________with them and end up with a good network of friends. Also these clubs usually have an excellent social life as they arrange parties and special occasions at the club where you can meet to talk and eat together and generally have a good time. Many people (34)________up sports in their early teens but it is good idea to continue as doing sport is a way of relieving stress and giving you more energy as well as being a good break from your studies. Best of all, a lot of clubs can arrange to get tickets for top sporting events that are hard to (35)________This means you can often get front row seats for matches and competitions in your favorite sport, or you may even be able to see your favorite team. Well worth joining!

Điền vào ô số 32

offer

present

hand

propose

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33. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer for each of the blanks.

THE BENEFITS OF JOINING A SPORTS CLUB

      Everyone, old or young, should think about joining a sports club. There are many benefits of being a (31)________of a club. First of all, you have the opportunity not just to play your favorite sport on a regular basis, but also to improve. Most clubs have training sessions or even professionals who (32)________lessons. Secondly, it’s a chance to meet people who enjoying doing the same things as you so you will probably get (33)________with them and end up with a good network of friends. Also these clubs usually have an excellent social life as they arrange parties and special occasions at the club where you can meet to talk and eat together and generally have a good time. Many people (34)________up sports in their early teens but it is good idea to continue as doing sport is a way of relieving stress and giving you more energy as well as being a good break from your studies. Best of all, a lot of clubs can arrange to get tickets for top sporting events that are hard to (35)________This means you can often get front row seats for matches and competitions in your favorite sport, or you may even be able to see your favorite team. Well worth joining!

Điền vào ô số 33

up

on

over

about

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34. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer for each of the blanks.

THE BENEFITS OF JOINING A SPORTS CLUB

      Everyone, old or young, should think about joining a sports club. There are many benefits of being a (31)________of a club. First of all, you have the opportunity not just to play your favorite sport on a regular basis, but also to improve. Most clubs have training sessions or even professionals who (32)________lessons. Secondly, it’s a chance to meet people who enjoying doing the same things as you so you will probably get (33)________with them and end up with a good network of friends. Also these clubs usually have an excellent social life as they arrange parties and special occasions at the club where you can meet to talk and eat together and generally have a good time. Many people (34)________up sports in their early teens but it is good idea to continue as doing sport is a way of relieving stress and giving you more energy as well as being a good break from your studies. Best of all, a lot of clubs can arrange to get tickets for top sporting events that are hard to (35)________This means you can often get front row seats for matches and competitions in your favorite sport, or you may even be able to see your favorite team. Well worth joining!

Điền vào ô số 34

set

get

give

put

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35. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer for each of the blanks.

THE BENEFITS OF JOINING A SPORTS CLUB

      Everyone, old or young, should think about joining a sports club. There are many benefits of being a (31)________of a club. First of all, you have the opportunity not just to play your favorite sport on a regular basis, but also to improve. Most clubs have training sessions or even professionals who (32)________lessons. Secondly, it’s a chance to meet people who enjoying doing the same things as you so you will probably get (33)________with them and end up with a good network of friends. Also these clubs usually have an excellent social life as they arrange parties and special occasions at the club where you can meet to talk and eat together and generally have a good time. Many people (34)________up sports in their early teens but it is good idea to continue as doing sport is a way of relieving stress and giving you more energy as well as being a good break from your studies. Best of all, a lot of clubs can arrange to get tickets for top sporting events that are hard to (35)________This means you can often get front row seats for matches and competitions in your favorite sport, or you may even be able to see your favorite team. Well worth joining!

Điền vào ô số 35

order

book

engage

register

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36. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

The passage preceding most likely discusses ________.  

architecture of ancient Asian civilization

religious practices of the people of Angkor

the form of government practiced by the Khmer Empire

the other six wonders of the world

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37. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

According to the passage, Lake Tonle Sap in Cambodia ________.

was unable to supply fish for the people of Angkor

is one of the Seven Wonders of the World

is an enormous body of fresh water in Asia

became polluted due to a population explosion

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38. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

The word “seat” in paragraph 1 is closest in meaning to ________.

battle

summit

location

chief

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39. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

The hydraulic system of reservoirs ________.

supplied irrigation from the Indian Ocean

helped transport the sandstone for constructing temples

were destroyed by nearby warrior’s tribes

became non–functional due to overuse

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40. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

The word “artificial” in paragraph 2 is closest in meaning to ________.

man–made

numerous

natural

insincere

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41. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

The word “they” in paragraph 2 refers to ____.

reservoirs and canals

temples and palaces

rice paddles

farmland

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42. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

All of the following are mentioned as events that can affect food supply EXCEPT ________.

reduction of nutrients

contamination of soil

loss of water supply

erosion of soil

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43. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

The phrase this source in the passage refers to

sun

wind

dammed rivers

oceans

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44. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

The word exploit in the passage is closest meaning to

utilize

declare

contain

determine

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45. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

Why does the author mention the Hoover Dam in paragraph one ?

To give a current example of ocean–based energy technology

To explain that dams are effective producers of sustainable energy

To draw a comparison between two sources of renewable energy

To show that alternative energy sources have not been successful

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46. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

According to paragraph 3, which of the following is true about wave–power technologies?

Many of them use submerged objects to obtain the waves’ energy

Compressed air must be present for them to work properly

They undertake three steps in order to collect wave power

They rely on the water’s motion to create electricity

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47. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

According to paragraph 5, what part did the cables play in OSPREY’s design?

They attached the partially submerged chamber to the sea floor

They generated the electricity which was then collected in turbines

They conducted the electricity from the generator to the shore

They provided stability during powerful ocean storms.

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48. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

The word inhibited in the passage is closest in meaning to 

delivered

prevented

protected

approved

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49. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

What can be inferred from paragraph 7 about governments? 

They do not believe wave–energy devices can withstand ocean forces

Their interests often conflict with those of the energy industries

They demand much scientific research before they provide funding

Their support is often essential to the success of new endeavors

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50. Trắc nghiệm
1 điểmKhông giới hạn

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The quest for sustainable sources of energy study the energy has led humans to study the energy potential of the sun and the wind, as well as the immense power created by dammed rivers. The oceans, too, represent an impressive source of potential energy. For example, it has been estimated that the oceans could provide nearly 3,000 times the energy generated by hydroelectric dams such as the Hoover Dam. Yet, this source remains quite difficult to exploit. But this challenge has not prevented scientists from trying. Within the last few decades, several technologies that can transform the ocean’s immense forces into usable electricity have been invented and introduced. Some focus on capturing the power of the changing tides, while others rely on thermal energy created by oceans in certain tropical regions. However, the most common and easiest-to-develop technologies are those designed to harness the power inherent in the ocean’s waves. There are several methods by which ocean-wave energy can be collected. All of them work because the movement of the water that the waves induce creates storable energy by directly or indirectly driving a power generator. In one such technology, the changing water levels in the ocean that are produced by waves lift a long floating tube comprised of many sections connected by hinges. As the sections move up and down with the water, they pump a special fluid through the tube that can be used to drive a generator. Another technique works on a similar principle, only the floating object rocks back and forth with the motion of the water instead of up and down. A third method of collecting wave energy relies on the rising water from the waves to compress air in a partially submerged chamber. As the waves rush into the chamber, they push the air out through a narrow tunnel. Located inside this tunnel is a turbine connected to a power generator. The movement of the air turns the turbine, which feeds energy into the generator. The drawback to each of these concepts is that the they make it necessary to have many pieces of machinery linked together. This presents a problem because the larger the device, the more vulnerable it is to damage from hazardous ocean environments, and the more likely it is to interfere with otherwise unspoiled coastal scenery. Also, these methods demand the construction of site-specific machines that take into consideration average local wave heights and sea conditions. Such a requirement can be quite cost-prohibitive, because engineers must create unique power generation mechanism for each site. In other words, the ability to get power from waves differ from region to region. Japan, Norway, and the UK have attempted to generate energy by capturing the power of ocean waves. In northern Scotland, the first power plan to use wave power, OSPREY ( Ocean Swell Powered Renewable Energy ), began operating in 1995. It followed the principle of the third method described above : waves entering a partially submerged chamber pushed air into turbines to generate electricity. The electricity was then transmitted to power collectors in the shore via underwater cables. Unfortunately, the OSPREY plant was destroyed in a large storm, highlighting an unavoidable difficulty associated with this kind of power generation. The potential benefits of wave-based energy are hard to ignore. Once the proper machinery is produced and installed, the energy is free. Maintenance cost are small, and the equipment does not pose any threats of environmental pollution. And best of all, the amounts of energy produced are enormous. However, these theoretical advantages have yet to be fully realized. In many cases, a lack of government funding has inhibited the technologies from advancing. For example, despite the relative abundance of proposed wave-power devices, many have not been adequately tested, and most have been evaluated only in artificial pools where they are not subjected to the harsh marine conditions that exist in actual oceans. Protecting the equipment from the sea’s destructive forces, as well as the fundamental task of determining feasible locations for collecting energy source are substantial and will require more time to overcome.

All of these are problems associated with the collection of wave energy EXCEPT ?

the difficulty of finding feasible locations

the destructive power of the ocean

the size of the equipment involved

the constant changing of the tides

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