超难!定语从句1道Without fact,we can't form a worthwhile opinion,for

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/17 23:25:40

超难!定语从句1道
Without fact,we can't form a worthwhile opinion,for we need to have factual knowledge _____ out thinking.
a which we are based on
b upon with we can base
c which can we base upon
d to which we can base
选什么?为什么?

楼主应该打错了几个字母选b 后半部分正常语序是 we can base our thinking upon factual knowledge 这个定语从句先行词是factual knowledge 用 which 而which 前的介词可以和 which 捆绑即upon which
然后按定语从句的规则后面剩下的部分用正常语序 we can base our thinking 形成b项

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