Why people can’t use all of the fresh water? Because some of it is _________________________.

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问题 Why people can’t use all of the fresh water?
Because some of it is _________________________.
Why can’t people use all of the fresh water?

选项

答案polluted

解析 题目询问人们为何不能利用所有的淡水。从关键句“And we cannot even use all of it,because some of it is polluted.(我们甚至不能利用所有的淡水资源,因为有一部分被污染了。)”可直接得到答案。
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