Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có lời giải chi tiết (Đề 4)
Đề thi

Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có lời giải chi tiết (Đề 4)

A
Admin
Tiếng AnhLớp 958 lượt thi
96 câu hỏi
Đoạn văn

SECTION III: READING

Part 1. Questions 56 – 65

Read the passage below and choose the best answer to each question.

     Nearly 200 of the 1500 native plant species in Hawaii are at risk of going extinct in the near future because they have been (56) _______ to such low numbers. Approximately 90 percent of Hawaii's plants are found nowhere else in the world but they are (57) _______ by alien invasive species such as feral goats, pigs, rodents and (58) _______ plants.

     The Hawaii Rare Plant Restoration Group is striving to (59) _______ the extinction of the 182 rare Hawaiian plants with fewer than 50 individuals remaining in the (60) _______ . Since 1990, (61) _______ a result of their "Plant Extinction Prevention Program", sixteen species have been brought into (62) _______ and three species have been reintroduced. Invasive weeds have been removed in key areas and fencing put up in order to (63) _______ plants in the wild.

     In the future the Hawaii Rare Plant Restoration Program aims (64) _______ collecting genetic material from the remaining  plants  in  the  wild  for storage  as a safety net for the future. They also aim to manage wild populations and where possible reintroduce species into (65) _______ .

1. Trắc nghiệm
1 điểm

Nearly 200 of the 1500 native plant species in Hawaii are at risk of going extinct in the near future because they have been (56) _______ to such low numbers.

reduced

increased

disappeared

developed

Xem đáp án

Chọn A

2. Trắc nghiệm
1 điểm

Approximately 90 percent of Hawaii's plants are found nowhere else in the world but they are (57) _______ by alien invasive species such as feral goats, pigs, rodents

guarded

invested

threatened

conserved

Xem đáp án

Chọn C

3. Trắc nghiệm
1 điểm

and (58) _______ plants.

national

native

non-native

international

Xem đáp án

Chọn C

4. Trắc nghiệm
1 điểm

The Hawaii Rare Plant Restoration Group is striving to (59) _______

encourage

stimulate

influence

prevent

Xem đáp án

Chọn D

5. Trắc nghiệm
1 điểm

the extinction of the 182 rare Hawaiian plants with fewer than 50 individuals remaining in the (60) _______ .

atmosphere

hole

sky

wild

Xem đáp án

Chọn D

6. Trắc nghiệm
1 điểm

Since 1990, (61) _______ a result of their "Plant Extinction Prevention Program",

so

as

due

but

Xem đáp án

Chọn B

7. Trắc nghiệm
1 điểm

sixteen species have been brought into (62) _______ and three species have been reintroduced.

contamination

cultivation

production

generation

Xem đáp án

Chọn B

8. Trắc nghiệm
1 điểm

Invasive weeds have been removed in key areas and fencing put up in order to (63) _______ plants in the wild.

derive

vary

protect

remain

Xem đáp án

Chọn C

9. Trắc nghiệm
1 điểm

In the future the Hawaii Rare Plant Restoration Program aims (64) _______ collecting genetic material from the remaining plants in the wild for storage as a safety net for the future.

for

with

on

at

Xem đáp án

Chọn D

10. Trắc nghiệm
1 điểm

They also aim to manage wild populations and where possible reintroduce species into (65) _______ .

reserves

shelters

gardens

halls

Xem đáp án

Chọn A

11. Trắc nghiệm
1 điểm

SECTION I: LISTENING (You will hear twice for each part)

Part 1. Listen to the recording twice. Choose the correct answer for each of the following blanks.

When is the reality showing on TV? What channel is showing the program? 

at 7:00 on channel 5

at 7:30 on channel 7

at 8:00 on channel 11

Xem đáp án

Chọn A

Đoạn văn

Part 2. Questions 66 – 75

Read the passage below and choose the best answer to each question

Sex–trait stereotypesmay be defines as a set of psychological attributesthat characterize men more frequently than women. Thus, males are oftendescribed as ambitious, unemotional, and independent and, on the otherhand, like selfish, unrefined, and insensitive. Females are described as emotional,irrational, high-strung, and tentative. In spite of the egalitarianmovement,recent studies have demonstrated that sex-trait stereotypes remain commonamong young adults today. In fact, such stereotyping has proved to be thepsychological justification for social beliefs concerning the appropriateness ofvarious activities for men and women that further perpetuatethe different sex roles traditionally ascribedto men and women.

The awareness of sex – trait stereotypes in the United States developes alinearfashion between the ages of four and ten. Generally, knowledge of malestereotypical characteristics develops earlier, whereas knowledge of femalecharacteristics increases more rapidly between the ages of four and seven. While the reasons for this learning are not fully understood, evidence suggeststhat at the preschool level children’s literature and television programs providepowerful models and reinforcement for stereotyped views.Studies designed to compare sex-trait stereotypes cross–nationally show ahigh degree of correspondence in the characteristics ascribed to men and women. As finding have been obtained in the other countries, two hypotheseshave been advanced to explain the commonalities in sex trait stereotyping. Onestates that pancultural similarities play a role in the psychologicalcharacteristics attributed to men and women, and the second states that thegeneral picture is one of cultural relativism.

12. Trắc nghiệm
1 điểm

The passage is probably an excerpt from an article on _________.

sociology

demographics

psychotherapy

sociobiology

Xem đáp án

Chọn D

13. Trắc nghiệm
1 điểm

Which of the following statements is supported in the passage?

The beliefs of young adults are more common among the old.

The beliefs of young adults have shown little change.

Young adults have participated in many common studied.

The egalitarian movement has been a resounding success.

Xem đáp án

Chọn D

14. Trắc nghiệm
1 điểm

In line 3, the word ambitious is closest in meaning to _________.

anxious

ambiguous

enterprising

honest

Xem đáp án

Chọn C

15. Trắc nghiệm
1 điểm

In line 4, the word high-strung is closest in meaning to _________.

nervous

hideous

high-class

fair-minded

Xem đáp án

Chọn A

16. Trắc nghiệm
1 điểm

In line 9, the word perpetuate is closest in meaning to _________.

perplex

maintain

mount

personalize

Xem đáp án

Chọn B

17. Trắc nghiệm
1 điểm

According to the passage, characterizations of men and women as havingparticular sets of attributed are _________.

found in several coutries

reflected in modern fashion

uniform across all groups

contingent (tình cờ) on a socioeconomic class

Xem đáp án

Chọn A

18. Trắc nghiệm
1 điểm

It can be inferred from the second paragraph that young children learnabout sex-trait stereotypes _________.

by watching their parents

when their learning is reinforced

by being exposed to various media

after they start school

Xem đáp án

Chọn C

19. Trắc nghiệm
1 điểm

It can be inferred from paragraph that social beliefs precipitate _________.

nontraditional gender roles

the rationalizationfor stereotyping

the on-going egalitarian change

concerns for the legitimacy of sex traits

Xem đáp án

Chọn B

20. Trắc nghiệm
1 điểm

The author of the passage would most probably agree with which of thefollowing statements?

Social attitudes are not likely to change radically

Social attitudes toward women have been updated and made morebalanced.

Social attitudes toward men are continually nullifiedand modernized.

The women’s liberation movement has borne little fruit.

Xem đáp án

Chọn A

21. Trắc nghiệm
1 điểm

Which of the following is the best title for the passage?

A Cross–examination of Stereotypical Behaviors

A Relativist Perspective on Stereotyping

The Pervasivenessof Sex–Trait Stereotypes

A Unilateral Approach to Sex – Trait Stereotyping

Xem đáp án

Chọn B

22. Trắc nghiệm
1 điểm

Why does the man not want to watch the reality show?

He watched the same program last week.

He isn't interested in show's theme.

He wants to go swimming instead.

Xem đáp án

Chọn B

Đoạn văn

Read the text and fill in one word which best fits each gap.

Thomas Alva Edison was born in Milan, Ohio, On February 11th, 1847. His family (76) ………………..……… to Port Huron, Michigan, when he was seven years old. Surprisingly, he attended school (77) ………………..……… only two months. His mother, a former teacher, taught him a few things, but Thomas was mostly self – educated. His natural curiosity (78) ………………..……… him to start experimenting at young age. Thomas Edison lit (79) ………………..……… the world with his invention of the electric light. Though the electric light seems to be the (80) ………………..……… useful, it was not his (81) ………………..……… invention. He also invented the record player, the motion picture camera, and over 1,200 (82) ………………..……… inventions. About every two weeks, he (83) ………………..……… something new. He worked 16 out of every 24 hours. Sometimes he worked (84) ………………..……… intensely that his wife had to remind him to sleep and eat. Thomas Edison died at the age of 84 on October 18th, 1931, at his estate in West Orange, New Jersey. He left numerous inventions (85) ………………..……… improved the quality of life all over the world.

23. Tự luận
1 điểm

His family (76) ………………..……… to Port Huron, Michigan, when he was seven years old.

Xem đáp án

(76) moved

24. Tự luận
1 điểm

Surprisingly, he attended school (77) ………………..……… only two months.

Xem đáp án

(77) for

25. Tự luận
1 điểm

His natural curiosity (78) ………………..……… him to start experimenting at young age.

Xem đáp án

(78) led

26. Tự luận
1 điểm

Thomas Edison lit (79) ………………..……… the world with his invention of the electric light.

Xem đáp án

(79) up

27. Tự luận
1 điểm

Though the electric light seems to be the (80) ………………..……… useful,

Xem đáp án

(80) most

28. Tự luận
1 điểm

it was not his (81) ………………..……… invention. He also invented the record player

Xem đáp án

(81) only

29. Tự luận
1 điểm

the motion picture camera, and over 1,200 (82) ………………..……… inventions.

Xem đáp án

(82) other

30. Tự luận
1 điểm

About every two weeks, he (83) ………………..……… something new.

Xem đáp án

(83) created /made / invented

31. Tự luận
1 điểm

Sometimes he worked (84) ………………..……… intensely that his wife had to remind him to sleep and eat.

Xem đáp án

(84) so

32. Tự luận
1 điểm

He left numerous inventions (85) ………………..……… improved the quality of life all over the world.

Xem đáp án

(85) which / that

33. Trắc nghiệm
1 điểm

How does the man feel about watching Star Wars on TV?

He wouldn't mind seeing it again.

He'd like to watch it if he had more time.

He'd prefer to watch something else.

Xem đáp án

Chọn C

34. Trắc nghiệm
1 điểm

Which statement best describes the man's feelings about watching the home improvement show?

He doesn't want to watch because his wife will expect him to fix things around the house.

He thinks that he will be able to get a better job by learning from the show.

He thinks it is easier to get someone else to repair their problems around the house.

Xem đáp án

Chọn A

35. Trắc nghiệm
1 điểm

What does the couple decide to watch?

a TV drama

a sports event

a talk show

Xem đáp án

Chọn B

36. Tự luận
1 điểm

Part 2. Listen to the recording. Complete the form below. Write no more than two words or numbers for each of the following blanks.

Sidney Street Community Cetre

Venue booking form

Example                          Answer

Name:                              Maria Lincoln

Details of party booking

Number of people            (6) approximately …………………………………

Date of party:                   (7) …………………………………

Name of room:                The (8) …………………………………Suite

Time:                               (9) from ……………………to …………………… p.m

Drinks:                            licensed for soft drinks

Contact details:

Postcade                          (10) …………………………………

Address:                          Flat (11) ……………, 35 Beeches Street

Telephone

Landline:                         22 32 79

Mobile                             07897 (12) ……………………………

Booking fee

Cost of room hire:            £ 115 with (13) ……………………… and ………………………

Disco system hire            Optional. Fee £ 25 with no technician

Deposit:                           (14) £ ……………………

Insurance:                        £ 9 for 24 hours. Cover cancellation, (15) ……………………and ……………………

Xem đáp án

Sidney Street Community Cetre

Venue booking form

Example                    Answer

Name:                        Maria Lincoln

Details of party booking

Number of people       (6) approximately 70

Date of party:             (7) September 15th

Name of room:           The (8) Mandela

Time:                         (9) from 3.30 to 9 p.m

Drinks:                      licensed for soft drinks

Contact details:

Postcade                    (10) PA57 GJ

Address:                    Flat (11) 40, 35 Beeches Street

Telephone

Landline:                   22 32 79

Mobile                       07897 (12) 29 33 81

Booking fee

Cost of room hire:      £ 115 with (13) tables and chairs

Disco system hire       Optional. Fee £ 25 with no technician

Deposit:                     (14) £ 30

Insurance:                  £ 9 for 24 hours. Cover cancellation, (15) damage and injury

37. Trắc nghiệm
1 điểm

SECTION II: LEXICO – GRAMMAR 

Part 1: Questions from 16 to 36.

Choose the best answer to each question.

Mrs. Archer is known ________ the finest collection of twentieth century art in private hands

as have

having

by having

to have

Xem đáp án

Chọn D

38. Trắc nghiệm
1 điểm

________an emergency arise, call 911

Should

Can

Does

Will

Xem đáp án

Chọn A

39. Trắc nghiệm
1 điểm

The house is found ________ down

to burn

burning

having burned

to have been burned

Xem đáp án

Chọn D

40. Trắc nghiệm
1 điểm

“Would you mind turning down your stereo ?’’   - “________.”

I’m really sorry! I ‘m not paying attention

Oh! I’m sorry! I didn’t realize that

No. I don’t

Yes, I do

Xem đáp án

Chọn B

41. Trắc nghiệm
1 điểm

Granny is completely deaf. You’ll have to ________allowance for her

bring

take

make

find

Xem đáp án

Chọn C

42. Trắc nghiệm
1 điểm

I decided to go to the library as soon as I ________.

finish what I did

would finish what I did

finished what I did

finished what I was doing

Xem đáp án

Chọn D

43. Trắc nghiệm
1 điểm

It’s essential that every student ________ the exam before attending the course.

pass

passes

would pass

passed

Xem đáp án

Chọn A

44. Trắc nghiệm
1 điểm

She was ________ she could not say anything.

so surprised at the news that

such surprised at the news that

so surprised of the news that

so that surprised for the news

Xem đáp án

Chọn A

45. Trắc nghiệm
1 điểm

Deborah is going to take extra lessons to ________ what she missed while she was away.

catch up on

cut down on

put up with

take up with

Xem đáp án

Chọn A

46. Trắc nghiệm
1 điểm

A washing machine of this type will certainly ________ normal domestic use.

stand up for

come up with

get on to

take down with

Xem đáp án

Chọn A

47. Trắc nghiệm
1 điểm

Ancient Egyptians mummified their dead through the use of chemicals, ________ancient Peruvians did through natural processes.

because

whereas

even though

whether or not

Xem đáp án

Đáp án: B

Kiến thức: Từ loại

A. because: bởi vì

B. whereas: trong khi

C. even though: mặc dù

D. whether or not: có hay không

Dựa vào nghĩa câu, chọn B.

Dịch: Người Ai Cập cổ đại ướp xác người chết bằng cách sử dụng hóa chất, trong khi người Peru cổ đại lại làm như vậy thông qua các quá trình tự nhiên.

48. Trắc nghiệm
1 điểm

It is very difficult to ________ the exact meaning of an idiom in a foreign language.            

convert

convey

exchange

transfer

Xem đáp án

Đáp án: B

Giải thích:

Kiến thức: Từ vựng

A. convert (v): chuyển đổi

B. convey (v): truyền đạt, truyền tải

C. exchange (v): trao đổi, đổi trác

D. transfer (v): chuyển giao, chuyển nhượng

Dựa vào nghĩa, chọn B.

Dịch: Thật khó để truyền đạt chính xác ý nghĩa của một thành ngữ trong một ngôn ngữ nước ngoài.

49. Trắc nghiệm
1 điểm

Half of the children were away from school last week because of ________ of influenza.

a break- out

a breakthrough

an outburst

an outbreak

Xem đáp án

Đáp án: D

Giải thích:

Kiến thức: Từ vựng

A. a breakout (n): vượt ngục

B. a breakthrough (n): bước đột phá

C. an outburst (n): sự bùng nổ cảm xúc

D. an outbreak (n): sự bùng phát (dịch bệnh, chiến tranh, bạo lực)

Dựa vào nghĩa, chọn D.

Dịch: Một nửa số trẻ em đã nghỉ học vào tuần trước vì có một đợt bùng phát bệnh cúm.

50. Trắc nghiệm
1 điểm

A: This grammar test is the hardest one we’ve ever had this semester!

B:________ but I think it’s quite easy.

I couldn’t agree more.

I understand what you’re saying.

You’re right.

I don’t see in that way.

Xem đáp án

Chọn B

51. Trắc nghiệm
1 điểm

So little ________ about mathematics that the lecture was completely beyond me.

I have known

I knew

do I know

did I know

Xem đáp án

Chọn D

52. Trắc nghiệm
1 điểm

________ in the atmosphere is the temperature falling below freezing.

Frost is produced

Frost produces

What produces frost

What is frost produced

Xem đáp án

Chọn C

53. Trắc nghiệm
1 điểm

He said that the plane had already left and that I________an hour earlier.

Must have arrived

had to arrive

should have arrived

was supposed to arrive

Xem đáp án

Chọn C

54. Trắc nghiệm
1 điểm

She _____ down completely on hearing of her friend's death.

broke

turned.

put

fell

Xem đáp án

Chọn A

55. Trắc nghiệm
1 điểm

________having a good salary, he also has a private income.

What's more

Furthermore

Apart from

From

Xem đáp án

Chọn C

56. Trắc nghiệm
1 điểm

The whole village was wiped out in the bombing raids.

removed quickly

cleaned well

changed completely

destroyed completely

Xem đáp án

Chọn D

57. Tự luận
1 điểm

Part 2: Questions from 36 to 45

Use the correct form of the word in brackets to complete the following sentences.

The …………………………helped to improve the students' performance in the school play.

Xem đáp án

The rehearsal helped to improve the students' performance in the school play.

58. Tự luận
1 điểm

The ……………………………of the education system in Finland is famous all around Europe.

Xem đáp án

The efficiency of the education system in Finland is famous all around Europe.

59. Tự luận
1 điểm

Jackson has made a marriage ……………………………to Lucia in front of everyone.

Xem đáp án

Jackson has made a marriage proposal to Lucia in front of everyone.

60. Tự luận
1 điểm

I can't have ……………………………in this house! There aren't partition walls!

Xem đáp án

I can't have intimacy in this house! There aren't partition walls!

61. Tự luận
1 điểm

His latest ……………………………is a book of verse on the theme of relationships

Xem đáp án

His latest publication is a book of verse on the theme of relationships

62. Tự luận
1 điểm

There will be a ……………………………for bar waiter next month.

Xem đáp án

There will be a vacancy for bar waiter next month.

63. Tự luận
1 điểm

Too much ……………………………to the sun can result in skin cancer.

Xem đáp án

Too much exposure to the sun can result in skin cancer.

64. Tự luận
1 điểm

He doesn't get any ……………………………out of doing physical exercise

Xem đáp án

He doesn't get any enjoyment out of doing physical exercise

65. Tự luận
1 điểm

Have you sent in your ……………………………form yet?

Xem đáp án

Have you sent in your application form yet?

66. Tự luận
1 điểm

The experts predicted ……………………………for the company in 2015.

Xem đáp án

The experts predicted prosperity for the company in 2015.

67. Tự luận
1 điểm

Part 3: Questions from 46 to 50.

Each of the following sentences has an error. Find the errors and correct them.

Many people believe that New York is the greater city in America.

Xem đáp án

Many people believe that New York is the greater city in America. greatest

68. Tự luận
1 điểm

Each year people around the world spending billions of dollars buying goods on the Internet

Xem đáp án

Each year people around the world spending billions of dollars buying goods on the Internet. spend

69. Tự luận
1 điểm

One of the most urgent problem facing us now is the need to control population growth.

Xem đáp án

Đáp án: problem → problems

Giải thích:

One of the + danh từ đếm được số nhiều

Sửa: problem → problems

Dịch: Một trong những vấn đề cấp bách nhất mà chúng ta đang phải đối mặt hiện nay là nhu cầu kiểm soát sự gia tăng dân số.

70. Tự luận
1 điểm

I'd lost my front door key and I had to smash a window by a brick to get in.

Xem đáp án

I'd lost my front door key and I had to smash a window by a brick to get in. with

71. Tự luận
1 điểm

Despite of the heavy snow, she went out.

Xem đáp án

Despite of the heavy snow, she went out. Bỏ of

72. Tự luận
1 điểm

Part 4: Questions from 51 to 55.

Fill in each of the sentences with correct prepositions.

The insurance company has agreed to meet our claim …………………… full.

Xem đáp án

The insurance company has agreed to meet our claim in full.

73. Tự luận
1 điểm

The course was described as suitable …………………… complete beginners.

Xem đáp án

The course was described as suitable for complete beginners.

74. Tự luận
1 điểm

I didn't think his work was …………………… to standard so I asked him to do it again.

Xem đáp án

I didn't think his work was up to standard so I asked him to do it again.

75. Tự luận
1 điểm

I might drop …………………… for a while next weekend if you are at home then.

Xem đáp án

I might drop in / by for a while next weekend if you are at home then.

76. Tự luận
1 điểm

I dropped out…………………… the Germanl class because I couldn't catch up with the level.

Xem đáp án

I dropped out of the Germanl class because I couldn't catch up with the level.

77. Tự luận
1 điểm

SECTION IV: WRITING 

Part 1: Questions from 86 to 90.

Finish each of the following sentences in such a way that it means the same as the sentence printed before it.

It's not possible that he ran away with the stolen goods.

Xem đáp án

He can't have run away with the stolen goods.

78. Tự luận
1 điểm

The game was cancelled because it rained heavily.

Xem đáp án

Because of the heavy rain, the game was cancelled.

79. Tự luận
1 điểm

They often went to the zoo with their parents as children.

Xem đáp án

Their parents would take them to the zoo as children.

80. Tự luận
1 điểm

Martin may not be very well but he still manages to enjoy life.   

Xem đáp án

Martin’s poor health doesn’t / can’t prevent / stop him (from) enjoying life.

81. Tự luận
1 điểm

My brother can’t run as fast as he used to.

Xem đáp án

My brother used to run faster than now / he does.

82. Tự luận
1 điểm

He got down writing a letter as soon as he returned from his work.

Xem đáp án

Đáp án: No sooner had he returned from his work than he got down writing a letter. 

Giải thích:

Giải thích:

Kiến thức: Đảo ngữ

No sooner + had + S + VpII + than + S + V-ed: ngay khi/vừa mới… thì…

Dịch: Anh ấy bắt tay vào viết lá thư ngay khi đi làm về.

→ Vừa đi làm về, anh đã bắt tay vào viết lá thư.

83. Tự luận
1 điểm

What a pity they closed the shop at lunch time.

Xem đáp án

I wish they hadn’t closed the shop at lunch time.

84. Tự luận
1 điểm

Taking the necessary precautions, you shouldn't have any health problems.

Xem đáp án

Provided you take the necessary precautions,you shouldn't have any health problems.

85. Tự luận
1 điểm

If we took effective action now, we could still save the rainforests.

Xem đáp án

Were we to take effective action now, we could still save the rainforests.

86. Tự luận
1 điểm

It is believed that the man was killed by terrorists.

Xem đáp án

The man is believed to have been killed by terrorists.

87. Tự luận
1 điểm

Part 2: Questions from 91 to 92

Complete the second sentence so that it has a similar meaning to the first sentence, using the word given. Do not change the word given.

The fridge is completely empty. left

Xem đáp án

There is nothing left in the fridge.

88. Tự luận
1 điểm

It is pointless to have that old typewriter repaired. worth

Xem đáp án

It is not worth repairing that old typewriter.

89. Tự luận
1 điểm

Frank never pays any attention to my advice. notice

Xem đáp án

Frank never takes any notice of my advice.

90. Tự luận
1 điểm

John only understood very little of what the teacher said.  hardly

Xem đáp án

John could hardly understand what the teacher said.

91. Tự luận
1 điểm

Her ability to run a company really impresses me. impressed

Xem đáp án

I’m really impressed by her ability to run a company.

92. Tự luận
1 điểm

Sarah cried her eyes out immediately she was told she failed the exam. tears

Xem đáp án

Sarah broke down in tears as she had failed the exam.

93. Tự luận
1 điểm

Do you mind if I come over to see you later? objection

Xem đáp án

Do you have any objection to my coming over to see you later?

94. Tự luận
1 điểm

The police now think he invented the story to protect his girlfriend. made

Xem đáp án

He is now thought to have made up the story to protect his girlfriend.

95. Tự luận
1 điểm

Driving a car without insurance is illegal. law

Xem đáp án

It is against the law to drive a car without insurance.

96. Tự luận
1 điểm

People generally think of tennis as a safe sport. considered

Xem đáp án

Tennis is generally considered as a safe sport.