一般来讲，（）只有在民主社会和宪政国家中才能存在和实现。得分：分系统自动批改于2021年3月7日 0点12分 - 查题网

>> 高等教育 / 政治学原理

高等教育 / 政治学原理

一般来讲，（）只有在民主社会和宪政国家中才能存在和实现。得分：分系统自动批改于2021年3月7日 0点12分

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政治学原理

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已知函数，则下列结论中正确的是（） A. 函数是奇函数 B. 函数在（0， ∞）上是增函数 C. 函数是单调函数 D. 函数是有界函数中学数学研究

The water we drink and use is running short in the world. We all have to learn how to stop wasting our limited water. One of the steps we should take is to find ways of reusing it. Experiments have already been done in this field. Today in most large cities, fresh water is used only once, then it runs into waste system. But it is possible to pipe the used water to a purifying factory. There it can be filtered and treated with chemicals so that it can be used again, just as it were fresh from a spring. But even if every large city purified and reused its water, we still would not have enough. Then we could turn to the oceans. All we'd have to do to make use of the seawater on earth is to get rid of the salt. This process is called desalinization, and it is already in use in many parts of the world. (1)The way to stop wasting our limited water is to _ _ _ _ _ _ _ _ .（2分）A、do experiments with waterB、purify the used water and reuse itC、use fresh water once againD、make use of seawater(2)The following tells us how to reuse the used water. Which is the right order of the passage?（2分）A、to have the used water filteredB、to put chemicals in itC、to pipe it to the usersD、to pipe the used water to be purified to a factory(3)There wouldn't be enough water for us if we didn't _ _ _ _ _ _ _ _ _ .（2分）A、turn to the oceans for more waterB、reuse used water and make use of seawaterC、desalt seawaterD、take steps to reuse all water on earth(4)The word "it" in the last sentence refers to _ _ _ _ _ _ _ .（2分）A、seawaterB、purified waterC、the process of getting rid of the salt in seawaterD、the process of collecting salt from the sea oceans(5)The best title for the passage is " _ _ _ _ _ _ _ ".（2分）A、How to Reuse WaterB、Two Solutions to the Problem of Water ShortageC、Stop Wasting Our Limited WaterD、How to Make Use of Seawater新发展英语综合教程（二）

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