問題詳情

28. The Earth Day of April 22 is celebrated annually since 1970 to demonstrate supportfor environmental protection and to remind humans ____ the significance of ecological sustainability on our mother Earth.
(A) of
(B) with
(C) as
(D) in

參考答案

答案:A
難度:簡單0.784722
統計:A(113),B(15),C(3),D(7),E(0)

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