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    14． Scientists have made a great in the treatment of cancer． A．principle B．breakthrough C．conclusion D．introduction 【查看更多】

     

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    Scientists have made a great _________ in the treatment of cancer．

    [　　]
    A．

    principle

    B．

    breakthrough

    C．

    conclusion

    D．

    introduction

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    Scientists have made a great ________ in the treatment of cancer．

    [　　]
    A．

    principle

    B．

    breakthrough

    C．

    conclusion

    D．

    introduction

    查看答案和解析>>

    Scientists have made a great          in the treatment of cancer.

           A．principle                 B．breakthrough       C．conclusion           D．introduction

    查看答案和解析>>

     Scientists have made a great          in the treatment of cancer.

           A．principle                 B．breakthrough       C．conclusion           D．introduction

    查看答案和解析>>


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