1 . 好的环境利于生活和学习，为了鼓励大家保护环境，学校组织了毕业年级全体师生于上周六进行了一次环保活动，请根据以下要点和要求写一篇英语短文记述你经历的这次有意义的活动。
要点∶
1）参加活动时间、地点及原因；
2）活动的具体内容是什么：主题演讲，美化公园等。
3）活动后你的感受。
要求1. 须包括所有要点提示，并适当补充，语句通顺，意思连贯；
2. 词数：100词左右；
3. 文中不得出现个人真实姓名和校名。

A meaningful environmental protection activity

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2 . 注意：1.可以适当增加细节，使行文连贯。
2.词数100词左右，开头已给出，不计入总词数。
Causes: large amounts of industrial waste pollute the water; Animal and human waste pollutes the water...
Consequences: do harm to animals and plants; have a long-lasting effect on human...
Suggestions: pass strict law to help reduce water pollution...

Recently we have done a survey of water pollution,

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