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 Hehasmadeanotherwonderfuldiscovery,

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问题详情:

 Hehasmadeanotherwonderfuldiscovery,

 He has made another wonderful discovery, _______ I think is of great importance to science.   

A. which                       B. how                         C. when      D. that

【回答】

A

知识点:定语从句

题型:选择题

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