Bộ 2 Đề kiểm tra học kì 2 Tiếng Anh 10 Explore New Worlds có đáp án - Đề 1

Pesticides are artificial poisons for killing insects, but they might also eliminate some other useful insects and disorder the balance of the (3)

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Pesticides are artificial poisons for killing insects, but they might also eliminate some other useful insects and disorder the balance of the (3) ___________.

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Đáp án: ecosystem