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    Many people believe we are heading for environment disaster we basically change the way we live. A. if B. but C. unless D. once 【查看更多】

     

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    Many people believe we are heading for environment disaster ____ we basically change the way we live.
    [     ]

    A. if
    B. but
    C. unless
    D. once

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    Many people believe we are heading for environment disaster ________ we basically change the way we
    live.
    [     ]
    A. if  
    B. but
    C. unless  
    D. once

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    Many people believe we are heading for environment disaster ________ we basically change the way we live

    [　　]
    A．

    if

    B．

    but

    C．

    unless

    D．

    once

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    Many people believe we are heading for environment disaster 　　 we basically change the way we live.

    A. if　　　　 B. but　　　 C. unless　　　　 D. once

     

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    Many people believe we are heading for environment disaster 　　 we basically change the way we live.

    A．if　　　　 B．but　　　 　 C．unless　　 D．once

     

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