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    [2013福建]28. Old-fashioned phones matter when wireless networks in disasters. A. turn down B. turn out C. break down D. break out 【查看更多】

     

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    Old?fashioned phones matter when wireless networks ________ in disasters.(2013·福建，28)

    A．turn down? B．turn out

    C．break down? D．break out

     

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