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    certain that his invention will lead to the development of production. A. That is B. This is C. It is D. It has 【查看更多】

     

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    ______ certain that his invention will lead to the development of production.

    [    ]

    A. That is   B. This is   C. It is   D. It has

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    37.________________certain that his invention will lead to the development of production.

    A.That's　　　          B.This is　　　   C.It's　　　    D.What's

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    37.________________certain that his invention will lead to the development of production.

    A．That's　　　

    B．This is　　　

    C．It's　　　

    D．What's

     

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    37.________________certain that his invention will lead to the development of production.

    A．That's　　　B．This is　　　C．It's　　　D．What's

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    ________ certain that his invention will lead to the development of production.

    [　　]

    A．That's
    B．This is
    C．It's
    D．What's

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