He made another wonderful discovery( ) of great important to science.A.which I think is B.which I think it is C.which I think it D.I think is

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He made another wonderful discovery( ) of great important to science.A.which I think is B.which I think it is C.which I think it D.I think is
He made another wonderful discovery( ) of great important to science.
A.which I think is B.which I think it is C.which I think it D.I think is

He made another wonderful discovery( ) of great important to science.A.which I think is B.which I think it is C.which I think it D.I think is
A
i think 是插入语,就是把它去掉也是一个完整的句子,你读读看.
which 在这里充当后面名词性从句的主语.

答案是A which i think is = which is
is of great importance(这里应该是名词吧。。。>_<)to science
对科学来说很重要

A考察定语从句~which指代前面的discovery作为从句的主语,所以应该没有it,从句中没有谓语,故需is

选A。从句要有主语,which可以充当主语成分,有了which ,也就不用it了。
对了,是be of great importance 吧?

选A吧,I think 是插入语可以不看对句子结构没有影响,定语从句不完整要加关系代词,用which

选A咯。i think 可以撇开不看的。

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