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    31．We all agree that good knowledge of physics is a must in explaining such natural phenomena. A. a; / B. a; a C. /; a D. /; / 【查看更多】

     

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    We all agree that _______ good knowledge of physics is a must in explaining such _______ natural phenomena.


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

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    We all agree that _______ good knowledge of physics is a must in explaining such _______ natural phenomena.

    A. a; /         B. a; a        C. /; a         D. /; /

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     We all agree that ____good knowledge of physics is a must in explaining such ____natural phenomena.

    A. a; 不填            B. a; a             C. 不填；a           D. 不填；不填

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    We all agree that _______ good knowledge of physics is a must in explaining such _______ natural phenomena.

    A．a; /B．a; aC．/; aD．/; /

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     We all agree that _______ good knowledge of physics is a must in explaining such _______ natural phenomena.

    A. a; /            B. a; a            C. /; a            D. /; /

     

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