Đáp án: A
disastrous (adj): tai hại, thảm khốc
catastrophic (adj): thảm khốc
infectious (adj): truyền nhiễm
unimportant (adj): không quan trọng
minor (adj): nhỏ
=> catastrophic = disastrous
Tạm dịch: Ô nhiễm có thể có tác động tai hại đến cân bằng hệ sinh thái.
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A. Consult
B. Enroll
C. Admit
D. pursue
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A. Release
B. Import
C. Export
D. charge
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A. Widen
B. Enlarge
C. Decrease
D. minimize
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A. Prohibits
B. Encourages
C. Calls for
D. stimulates
Choose the word or phrase that is CLOSEST in meaning to the underlined part in the following questions. We've set ourselves a series of goals to attain by the end of the month.
A. Reach
B. Get
C. Arrive
D. achieve
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A. Number
B. Environment
C. Habitat
D. variety
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A. Drought
B. Famine
C. Flood
D. earthquake
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A. Catch
B. Absorb
C. Keep
D. discharge
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A. in a foreign country
B. in your own country
C. all over the world
D. in your mother country