Câu hỏi:
31/03/2020 870Read the passage and choose the best option to complete each blank.
Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes ____(46)___ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals____(47)___feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds ____(48)___. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems ____(49)___ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of ___(50)____ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems
Điền ô số 46
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Trả lời:
Giải bởi Vietjack
Đáp án D
Ở đây ta cần một động từ
Động từ harm: gây hại, làm hại
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning
It started to rain at 2 o’clock and it is still raining
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31/03/2020
79,633
Câu 2:
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning
Had she read the reference books, she would have been able to finish the test.
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31/03/2020
23,511
Câu 3:
Mark the letter A, B, C or D on your answer sheet to indicate the word or phrase that is closest in meaning to the underlined part in each of the following questions.
His new yacht is certainly an ostentatious display of his wealth
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31/03/2020
22,161
Câu 4:
Do you know that beautiful lady over there?” - “Yes, that’s Victoria. She’s ____ in her group.”
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31/03/2020
15,582
Câu 5:
Could you stand_________ for me and teach my English class tomorrow morning, John?
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31/03/2020
14,419
Câu 6:
Mark the letter A, B, C, or D on your answer sheet to indicate the word OPPOSITE in meaning to the underlined word(s) in each of the following questions
The bank announced that it was to merge with another of the high street banks.
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31/03/2020
10,448
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