选择题:水是生命活动不可缺少的物质。下列说法不正确的是

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题目内容:

水是生命活动不可缺少的物质。下列说法不正确的是

A.自来水是纯净物

B.肥皂水可以区分软水和硬水

C.工业废水不能直接排放

D.过量使用农药、化肥会造成水体污染

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