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

游客2023-10-27  23

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 此空所在分句是作名词discovery的非限制性定语从句,因此关系代词用which不用that。故C正确。
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