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  • 科目:英语
  • 题型:单选题
  • 难度:容易
  • 人气:2101

The scientist has made quite a few discoveries, ______ of great importance to the whole world.

A.which I think they are B.which I think are
C.I think which are D.that I think they are
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Thescientisthasmadequiteafewdi