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    useful invention the computer is! A. What a B. What an C. How a D. How an 【查看更多】

     

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     ____ useful invention the computer is!

    A. What a       B. What an       C. How a      D. How an

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    --_________ useful invention the computer is.
    --Yes, It helps us a lot.

    A．What an B．What a
    C．How D．How a

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           useful invention(发明) the computer is!

    A．What an

    B．What a

    C．How

    D．How a

     

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         useful invention(发明) the computer is!

    A. What a    B. What an    C. How a     D. How an

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        useful invention(发明) the computer is!

    A．What a           B．What an           C．How a            D．How an

     

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