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    environmental damage is done, it will take many years for the ecosystem to recover. A. If only B. Even if C. While D. Once 【查看更多】

     

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    　　　 environmental damage is done, it will take many years for the ecosystem to recover.

    A. If only　　　 　 　 B. Even if　　　　 　 C. While　 　　　　 D. Once

     

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