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    We should all remember that some great scientific discoveries by chance. A. gained B. discovered C. occurred D. earned 【查看更多】

     

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    We should all remember that some great scientific discoveries _____________ by chance.

       A. gained             B. discovered             C. occurred             D. earned

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     We should all remember that some great scientific discoveries _____________ by chance.

       A. gained           B. discovered           C. occurred            D. earned

    查看答案和解析>>

    We should all remember that some great scientific discoveries _____________ by chance.

       A. gained           B. discovered           C. occurred            D. earned

    查看答案和解析>>

    We should all remember that some great scientific discoveries _____________ by chance.

    A．gained

    B．discovered

    C．occurred

    D．earned

     

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