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    19．Over the past decades, mountain ice in the Himalayas as a result of global warming． A．has been decreasing B．had decreased C．decreased D．is decreasing 【查看更多】

     

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    Over the past decades, mountain ice______ in the Himalayas as a result of global warming．

         A．has been decreasing                  B．had decreased   

           C．decreased                           D．is decreasing

    查看答案和解析>>

    Over the past decades, mountain ice______ in the Himalayas as a result of global warming．

         A．has been decreasing                  B．had decreased   

           C．decreased                           D．is decreasing

    查看答案和解析>>

    Over the past decades, mountain ice______ in the Himalayas as a result of global warming．

    A．has been decreasing                  B．had decreased

    C．decreased                          D．is decreasing

    查看答案和解析>>

    Over the past decades, mountain ice______ in the Himalayas as a result of global warming．

    　 A．has been decreasing　　　　　　　 　　　　　 B．had decreased　

    　 C．decreased　　　　　　　　　　　 　　　　　　　 D．is decreasing

     

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