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    In _____ preparation for the launching of Shenzhou Ⅶ, scientists need ______ knowledge of weather changes.

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

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    In _____ preparation for the launching of Shenzhou Ⅶ, scientists need ______ knowledge of weather changes.

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

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    In _____ preparation for the launching of Shenzhou Ⅶ, scientists need ______ knowledge of weather changes.

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

     

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    In ______ preparation for the launching of Shenzhou Ⅶ, scientists need ______ knowledge of weather changes.


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

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    In______ preparation for the launching of Shenzhou VII, 4、scientists need______knowledge of weather changes.


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

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