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    33． 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 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 if            B．If only                    C．While              D．Once

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