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He made another wonderful discovery, of great importance to science. [ ] A.which

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He made another wonderful discovery, of great importance to science. [ ] A.which

He made another wonderful discovery, ________ of great importance to science. (NMET 1998)

[]

A.which I think isB.which I think it isC.which I think itD.I think which is

试题答案

答案:A

解析:

这是一个非限制性定语从句,make another wonderful discovery是动宾词组,关系代词which在定语从句中作主语,代表the discovery, I think为插入语.