◎ 题干
Without facts, a person can not form a correct opinion, for he needs to have actual knowledge ______his thinking .
A.on which to be basedB.on which to base
C.which to be basedD.which to base
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Without facts, a person can not form a correct opinion, for he needs to have actual knowledge ______his thinking .A.on which to be basedB.on which to baseC.whic…”主要考查了你对  【限制性定语从句】【非限制性定语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。