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    精英家教网 > 高中英语 > 题目详情

    Edison made a lot of inventions, ________ of great importance．

    [　　]
    A．

    which I think are

    B．

    which I think they are

    C．

    which I think they

    D．

    I think which are

    答案：A
    解析：

    I think是插入语。which是关系代词，其先行词是inventions，引导非限制性定语从句。


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