9.读材料回答下列问题.材料一 南水北调示意图材料二 �国淡水资源是世界人均值的14.全国一半以上的城市存在着不同程度的缺水现象沿海城市 Template




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tomski9.读材料回答下列问题.材料一 南水北调示意图材料二 �国淡水资源是世界人均值的14.全国一半以上的城市存在着不同程度的缺水现象沿海城市 coloring