问题
选择题
________ is known to us all that the sun rises in the east.
A．As
B．That
C．Which
D．It
答案
答案：D
答案 D [考查it作形式主语。that引导的从句作真正的主语。]
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________ is known to us all that the sun rises in the east.
A．As
B．That
C．Which
D．It
答案：D
答案 D [考查it作形式主语。that引导的从句作真正的主语。]