单选题
The physicist has made a discovery, of great importance to the process of scienceand technology.无
A、
I think which is
B、
that I think is
C、
which I think is
D、
which I think it is
【正确答案】
C
【答案解析】
句意： 我认为这位物理学家的新发现对科技的发展意义深远。 这句话为非限定定语从句， 关系代词在定语从句中做主语， I think为插入语。
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