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【题目】下列关于水资源的叙述,正确的是( )
A.降水的时间分布不均,是造成水资源紧张的人为原因
B.目前人们大量利用的水资源是河流水,湖泊水和浅层地下水
C.水资源为可再生资源,因此不需节约
D.淡水资源分布是不均衡的,因此节约用水是区域性问题,而非全球性问题

【答案】B
【解析】本题考查水资源的分布及利用。
A、世界不同地区有不同的气候类型,使得降水也呈现不同的季节变化特点,这是造成水资源紧张的自然原因,故错误;
B、水是生命之源,它孕育和维持着地球上的一切生命。地球上的淡水资源,绝大部分为两极和高山的冰川,其余大部分为深层地下水。目前人类利用的淡水资源主要是江河、湖泊水和浅层地下水,故B正确;
C、可再生资源是指被人类开发利用后,可以在较短时间内更新、再生,或者能够重复利用、循环使用的自然资源,如气候资源、生物资源、水资源和土地资源等。对于可再生资源应有计划、有限制地加以开发利用,故错误;
D、当今世界面临着人口爆炸、资源(包括水资源)危机、环境污染等问题,节约用水也属于全球性的问题,我们要保护好资源与环境,以维持全球生态平衡。故错误。
所以答案是:B。

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