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    ( ) Do you know the equation E = mc2 , is a great achievement in physics. A. which B. that C. in which D. what 【查看更多】

     

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    Do you know the equation E = mc2 , _______ is a great achievement in physics.        
    [     ]
    A. which    
    B. that    
    C. in which      
    D. what

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    Do you know the equation E＝mc2, ________ is a great achievement in physics．

    [　　]

    A．which

    B．that

    C．in which

    D．what

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