Câu hỏi:
18/04/2020 1,208Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes (1) ________ ecosystems. If there is too (2) ________ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that 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 ans lets the seeds (3) ________ . Polluting the air, soil and water can harm ecosystems. Building (4) ________ on rivers for electric power and irrigation can harm ecosystems around the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and goverments to find better ways of (5) ________ 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 vào ô 4
Đáp án chính xác
Câu hỏi trong đề:
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Trả lời:
Giải bởi Vietjack
Đáp án D.
Tạm dịch: Building (4) ________ on rivers for electric power and irrigation can harm ecosystems around the rivers. Xây ________ trên sông làm thủy điện và tưới tiêu cũng gây hại tới hệ sinh thái xung quanh dòng sông.
A. moats: hào (xung quanh thành trì)
B. ditches: (hào, rãnh, mương)
C. bridges: cầu
D. dams: đập
Xây đập trên sông để làm thủy điện và phục vụ tưới tiêu do đó đáp án đúng là D. dams.
Nhà sách VIETJACK:
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