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

     

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    _______environmental damage is done, it takes many years for the ecosystem to recover．

    A．Even if

    B．If only

    C．While

    D．Once

     

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    _______environmental damage is done, it takes many years for the ecosystem to recover．

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

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    _______environmental damage is done, it takes many years for the ecosystem to recover．

    A．Even ifB．If onlyC．WhileD．Once

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     _______environmental damage is done, it takes many years for the ecosystem to recover．

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

     

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    _________ environmental damage is done, it takes many years for the ecosystem to recover．

    [　　]
    A．

    Even if

    B．

    If only

    C．

    While

    D．

    Once

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