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    精英家教网 > 高中英语 > 题目详情
    Lately some scientists are experimenting _____ white mice to _____ this kind of medicine.

    A. on, try on
    B. with, test on
    C. on, test out
    D. with, carry out
    C
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    Lately some scientists are experimenting _____ white mice to _____ this kind of medicine.
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    A. on, try on
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    C. on, test out
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    科目：高中英语 来源： 题型：

    Lately some scientists are experimenting ___________ white mice to ____________ this kind of medicine.

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