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    40．( )It is said that potato chips by mistake about a hundred years ago. A．invent B．invented C．are invented D．were invented 【查看更多】

     

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    It is said that potato chips ____________ by mistake about a hundred years ago.
    A．inventB．inventedC．are inventedD．were invented

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    It is said that potato chips ____________ by mistake about a hundred years ago.

    A．inventB．inventedC．are inventedD．were invented

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    It is said that potato chips ________ by mistake about a hundred years ago．

    A．invent               B．invented           C．are invented           D．were invented

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    It is said that potato chips ________ by mistake about a hundred years ago．

    [　　]

    A．invent

    B．invented

    C．are invented

    D．were invented

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    It is said that potato chips in KFC _________ by mistake about one hundred years ago．

    A．were invented         B．invented        C．was invented         D．is invented

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