Câu hỏi:
19/03/2020 227Read 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 vào ô số 49
Đáp án chính xác
Câu hỏi trong đề:
Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
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Trả lời:
Giải bởi Vietjack
B
on: trên
around: xung quanh
over: bên trên
under: bên dưới
=> đáp án B
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
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Câu 2:
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Câu 5:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
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Câu 6:
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Câu 7:
Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
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