The greenhouse effect occurs _______ heat radiated from the Sun.(A) when does the Earth’s atmosp

問題詳情

35. The greenhouse effect occurs _______ heat radiated from the Sun.
(A) when does the Earth’s atmosphere trap
(B) does the Earth’s atmosphere trap
(C) when the Earth’s atmosphere traps
(D) the Earth’s atmosphere traps

參考答案

答案：C
難度：簡單0.879121
統計：A(8),B(5),C(240),D(20),E(0)

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