is even more important is that the earth cooled down, water began to appear on its surfac

发布时间：2020-08-16 22:16:33

     is even more important is that the earth cooled down, water began to appear on its surface.
A. When
B. That
C. Which
D. What

网友回答

A. When
B. That
C. Which
(答案→)D. What
解析：本题考查名词性从句。句中What引导去主语从句，并在句中做主语。句意：甚至更为重要的是，地球变暖，水开始出现在它的表面。
以上问题属网友观点，不代表本站立场，仅供参考！