According to the passage what could be an efficient way to use water？A．Adopting the syste
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According to the passage, what could be an efficient way to use water？
A．Adopting the system of water right owned by the government.
B．Charging for water in places where water is becoming scarcer.
C．Taking political measures to interfere with the water issue.
D．Making it a free market for people to trade water-usage rights.
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正确答案：D
事实细节题。根据题干关键词anefficientwaytousewater定位到原文第一段第三句：Ideally，efficientwaterusewouldbeencouragedbychargingforit，butattemptstodosohavemostlyprovedpoliticallyimpossible．Amorepracticablealternativeisasystemoftradablewater-usagerights．由此可知，在理想的情况下，为有效利用水源我们应该鼓励收费，但此做法已经被证明在政治上不可行。有一个可行替代方案是水交易使用权系统，因此选[D]项。原文提到把水当作一项权利会使水源本已稀缺的情况变得更加糟糕，故[A]项与原文不符；[B]项忽略了ideally一词；[C]项是原文politicallyimpossible的干扰项。