is known to us all that the earth is smaller than the sun.A. ItB. WhatC. AsD. which

发布时间：2020-08-16 17:07:26

     is known to us all that the earth is smaller than the sun.
A. It
B. What
C. As
D. which

网友回答

(答案→)A. It
B. What
C. As
D. which
解析：本题考查名词性从句。It在句中作形式主语，真正的主语为that the earth is smaller than the sun，故选A。
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