文档介绍：Caring for Our Earth
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Water protection
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精品资料
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你怎么称呼老师？
如果老师最后没有总结一节课的重点的难点，你是否会认为老师的教学方法需要改进？
你所经历的课堂，是讲座式还是讨论式？
教师的教鞭
“不怕太阳晒，也不怕那风雨狂，只怕先生骂我笨，没有学问无颜见爹娘 ……”
“太阳当空照，花儿对我笑，小鸟说早早早……”
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We all know that water is very important in our life.
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All kinds of beautiful water
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Water scarcity and pollution has become one of the most important things in recent years. In this chapter we’ll discuss both fresh water and wastewater treatment, either for reuse or disposal in the environment "without polluting it. "
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Drought
Pollution
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N O W
Approximately 300 million nationwide have no access to clean water. Furthermore, over 700 million Chinese drink fetid water below World Health Organization standards. Almost 90% of underground water in cities are affected by pollution and 80% of China’s rivers fail to meet standards for fishing. Almost all of the nation's rivers are considered polluted to some degree, and half of the population lacks access to clean drinking water .Ninety percent of urban water bodies are severely polluted.
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Water pollution
manage water pollution
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