He made another wonderful discovery, _______________ of great importance to scie

He made another wonderful discovery, _______________ of great importance to scie

题型:不详难度:来源:
He made another wonderful discovery, _______________ of great importance to science.
A.which I think isB.which I think it isC.which I think itD.I think which is

答案
A
解析
考察定语从句和插入语。I think在句中作插入语,可以省略。Which指代先行词another wonderful discovery在句中作主语。故A正确。
举一反三
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