____ is known to everyone that Taiwan is part of China.

____ is known to everyone that Taiwan is part of China.
A.As B.Which C.It D.What
为何不选D?
求详细解释

第1个回答  2013-03-04
选C,It
如果是D的话,What (is known to everyone that...),后面应该有内容,因为括号里面的部分都是修饰What的,其实整个句子就是一个What,成分不全
第2个回答  2013-03-04
如选D,应是
What is known to everyone is that Taiwan is part of China.=
It is known to everyone that Taiwan is part of China.=
As is known to everyone,Taiwan is part of China.
what 应引导主语从句,故需添加谓语is
第3个回答  2013-03-04
IT
==AS is nkown to everyone,Taiwan is part of China
== That Taiwan is part of China is known to everyone.
==Taiwan is part of China, which is known to everyone.
== What is known to everyone is that Taiwan is part of China
==Taiwan's being part of China is known to everyone
== Taiwan is part of China, and that is known to everyone
第4个回答  2013-03-04
选择C
当主语部分太长时为了句子平衡采用it作形式主语。所谓形式是指句子的真正主语将在句子末段出现。本回答被提问者采纳
第5个回答  2013-03-04
What is known to everyone is that Taiwan is part of China.若选D要加个is
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