单选题
The last sentence of the fourth paragraph is intended to tell readers that______.
A、
society's demands upon and for clean water are increasing
B、
no person has the right to waste water
C、
without water, there could be no life
D、
everyone should be concerned about how water is used because the water a person uses will be used by future generations
【正确答案】
D
【答案解析】
[分析] 第四段最后一句具体解释其前面一句，前面一句的意思是：地球上水的总量是不变的；只是在循环利用，由此可推出D结论正确。
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