西南地区发生旱灾的主要原因有 A.属于湿润地区,农业用水量过大

西南地区发生旱灾的主要原因有

A.属于湿润地区,农业用水量过大  B.降水较常年同期偏少

C.属于干旱地区,水资源不足  D.气温较常年同期偏低,蒸发量大

答案

B


解析:

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