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    In 1948, three American scientists invented transistor, which is small electronic device to control an electric current. A. the; a B. a; a C. the; the D. a; the 【查看更多】

     

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    In 1948, three American scientists invented ____ transistor, which is ____ small electronic device to control an electric current.

    A．the; aB．a; aC．the; theD．a; the

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    In 1948, three American scientists invented ____ transistor, which is ____ small electronic device to control an electric current.

    A．the; a            B．a; a              C．the; the           D．a; the

     

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    In 1948, three American scientists invented ____ transistor, which is ____ small electronic device to control an electric current.


    1. A.
      the; a
    2. B.
      a; a
    3. C.
      the; the
    4. D.
      a; the

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    In 1948, three American scientists invented ______ transistor, which is ______ small electronic device to control an electric current．

    A． the; a               B． a; a              C． the; the              D． a; the

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