The physicist has made a discovery, _________of great importance to the progress

游客2023-11-07 30

问题 The physicist has made a discovery, _________of great importance to the progress of science and technology.

选项 A、I think which is
B、that I think is
C、which I think is
D、which I think it is

答案 C

解析语法结构。非限制性定语从句中不可用that引导。在D中，which与 it重复。如果我们把I think看作插入成分就更加容易看清楚了。

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