20 câu hỏi
Choose the best answer.
The red squirrel in England is in danger of ______.
growth
extinction
damage
destruction
Choose the best answer.
One of the factors that cause a species to become endangered is habitat ______.
loss
protection
management
preservation
Choose the best answer.
Scientists have been developing practical tools and methods to measure the ______ of the ecosystem.
harms
significance
health
role
Choose the best answer.
Natural resource managers ______ the needs and behaviors of wildlife.
accept
refuse
threaten
study
Choose the best answer.
Naturally, many different species in this freshwater ecosystem share the same kind of ______.
animals
food
plants
weather
Choose the best answer.
The national park was established to ______ the ecosystem of the limestone forests.
attack
abandon
protect
give up
Choose the best answer.
Ha Long Bay is the product of geological ______ that lasted more than 500 million years.
processes
projects
programs
progress
Choose the best answer.
The ______ living by the river has been uprooted and then transported away.
animals
vegetation
fish
insects
Choose the best answer.
Ecotourism is a useful tool to manage and ______ natural and cultural landscape.
desert
use
release
conserve
Choose the best answer.
The new varieties of rice grow well ______ in poor soil.
even
evenly
event
evened
Choose the best answer.
Scientists ______ about the rabbits’ activities for three years since the scientists realized that the rabbits had eaten many native plants in the area.
learn
learnt
are learning
have been learning
Choose the best answer.
The search for the new kind of penguin in Antarctica has been ______ international media attention.
attract
attracted
attracting
to attract
Choose the best answer.
Scientists have been studying different ecologies ______ the 20th century.
for
since
in
by
Choose the best answer.
Some people ______ down lots of trees along the river for the past two weeks.
cut
are cutting
have cut
have been cutting
Find the mistake.
The local farmers are trying to stop the invasive species from spreading for the past six months.
farmers
are trying
to stop
spreading
Find the mistake.
Scientists have been studying the elements that affect the develop of the native species.
been
that
develop
species
Choose the best answer.
Tracy: “I think plastic bags are not as harmful as people say. Instead, they provide great convenience.”
Nathan: “______. Plastic bags are among the biggest threats to our environment.”
I think you are right.
I’d say the opposite.
I was just going to say that.
That’s for sure.
What does the notice mean?
Tourists can dive in the coral reef at any time.
If tourists stay in the water, they can damage the coral reef.
If anyone swims in the water, they will be punished.
If anyone damages the coral reef, they will be punished.
What does the notice mean?
Invasive species can be found everywhere.
Zebra mussels are being raised in farms.
Visitors mustn’t try any leisure activities in the water.
Visitors can swim in this lake.
Find the mistake.
Drought, rising temperatures and heat waves have been affected the food and water supply.
A. rising temperatures
B. heat waves
C. been affected
D. water supply
rising temperatures
heat waves
been affected
water supply