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    what they have seen, scientists build a theory about the way that things happen. A. Being explained B. Explained C. Explain D. To explain 【查看更多】

     

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    To explain what they have seen, the scientists build a theory about the way ________ things happen and the causes and effects.

    [　　]

    A．how
    B．that
    C．in that
    D．which

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