题目内容
Without facts, we can’t form a correct opinion, for we need to have actual knowledge________ our thinking.
A. which to be based on B. which to base on
C. on which to base D. which to base
C
【解析】base our thinking on actual knowledge “ 将我们的思维建立在实际的知识基础之上” , 此处为不定式短语作定语,修饰knowledge .
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