Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If too many species _______ out, it will upset the ecosystem.
A.extinct
B.go
C.die
D.disappear

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If we continue to _______ the world’s resources at this rate, there will soon be none left.
A.throw away
B.use up
C.finish
D.damage

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Factory _______ are the main cause of environmental pollution.
A.remissions
B.emissions
C.admissions
D.submissions

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Al Gore is leading a global _______ for environmental awareness.
A.operation
B.action
C.campaign
D.attack

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The problem has been _______ about by the increase in global warming.
A.brought
B.caused
C.thought
D.written

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Measures must be taken to stop nuclear waste being _______ at sea
A.store
B.dropped
C.left
D.dumped

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
A large amount of carbon dioxide _______ are released into the atmosphere by burning fossil fuels.
A.environment
B.emissions
C.carbon footprint
D.infectious diseases

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Although global warming is causing changes in weather patterns, it is only one aspect of _______.
A.emissions
B.climate change
C.carbon dioxide
D.ecological balance

Phải làm theo cách nào để tăng độ cao của cột nước trong ống mao dẫn?
A.Pha thêm rượu vào nước
B.Hạ thấp nhiệt độ của nước.
C.Dùng ống mao dẫn có đường kính lớn hơn
D.Dùng ống mao dẫn có đường kính nhỏ hơn.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
My sister is an expert on wildlife and its _______.
A.conservation
B.reservation
C.conserve
D.preserve