题干

下列关于水的说法正确的是(  )

A:鉴别软水和硬水可使用肥皂水

B:淡水资源是取之不尽,用之不竭的

C:为节约用水,可用工业废水直接浇灌农田

D:为减少水体污染,要禁止使用农药和化肥

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答案(点此获取答案解析)

A

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                                                                                                                                                                                                                                          (诗歌有删改)