Câu hỏi trắc nghiệm (5 câu):
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Câu 1: Mã câu hỏi: 12119
Choose one word or phrase - a, b, c or d - that best completes the sentence or substitutes for the underlined word or phrase.
Half the world's rain forests have already been ___________.
- A. endangered
- B. eroded
- C. found
- D. destroyed
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Câu 2: Mã câu hỏi: 12121
A large hydroelectric __________was built on the River Danube.
- A. power
- B. bank
- C. dam
- D. wall
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Câu 3: Mã câu hỏi: 12123
_________air makes people unpleasant to breathe.
- A. Pollute
- B. Pollution
- C. Polluted
- D. Polluting
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Câu 4: Mã câu hỏi: 12125
We are now facing the possible________ of several rare species.
- A. disappearance
- B. danger
- C. variety
- D. existence
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Câu 5: Mã câu hỏi: 12126
Acid rain has caused severe _______ on the hillside.
- A. pollution
- B. erosion
- C. destruction
- D. floods