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    精英家教网 > 高中英语 > 题目详情
    As a beginner in English, we should acquire as much knowledge as possible, _____ our communication skills.

    A. which are based
    B. upon which are based
    C. which are based upon
    D. to which are based
    B
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    科目：高中英语 来源：0119 期中题 题型：单选题

    As a beginner in English, we should acquire as much knowledge as possible, _____ our communication skills.
    [     ]
    A. which are based
    B. upon which are based
    C. which are based upon
    D. to which are based

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