He has made another wonderful discovery, _____ I think is of

He has made another wonderful discovery, _____ I think is of great importance to science.
A.which B.what C.when D.that
彗星00 1年前 已收到1个回答 举报

小气哦哦 幼苗

共回答了19个问题采纳率:100% 举报

A

考察定语从句。Which指代先行词discovery在句中作主语。What不是定语从句的关系词,when是关系副词,that不能引导非限制性定语从句。故A正确。

1年前

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