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    精英家教网 > 高中英语 > 题目详情
    _____ environmental damage is done, it does take many years for the ecosystem to recover.

    A. Even if
    B. While
    C. Only if
    D. Once
    D
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    _____ environmental damage is done, it does take many years for the ecosystem to recover.
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    科目：高中英语 来源： 题型：

    _____ environmental damage is done does it take many years for the ecosystem to recover.

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