题目内容

【题目】 广西壮族自治区大化瑶族自治县喀斯特地貌广布，降水丰沛但多渗漏到地下流失。地质专家曾钻探至地下300米深，仍然找不到水，当地人畜饮水困难。据此完成下面小题。

【1】喀斯特地貌主要分布于我国的（ ）

A.北方地区B.南方地区C.青藏地区D.西北地区

【2】当地饮水困难的主要原因是（ ）

A.全年高温，蒸发旺盛B.工农业用水量大

C.特殊的地质条件不利于储水D.水体污染严重

【3】解决当地饮水困难，可以采取的措施是（ ）

A.海水淡化B.开采地下水C.人工降雨D.修建蓄水池

【答案】

【1】B

【2】C

【3】D

【解析】

【1】喀斯特地貌主要分布在我国的云贵高原和广西壮族自治区，位于我国的南方地区。故选B。

【2】读材料可知，当地降水丰沛，但是由于是喀斯特地地貌，特殊的地质条件不利于储水，所以当地饮水困难。故选C。

【3】海水淡化距离远，成本高，开采地下水非常困难，人工降雨需要特殊的条件，所以最好的方法就是修建蓄水池，把降水通过蓄水池储存起来。故选D。

该题考查我国广西的缺水的原因及解绝措施。分析材料结合所学知识解答即可。

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