读写任务（满分25分）
阅读下面的短文，然后按照要求写一篇150词左右的英语短文。
Throughout history man has changed his physical environment in order to improve his way of life. With the tools of technology he has altered（改变）many physical features（特征）of the earth. He has transformed（完全改变） woodlands and prairies（大草原） into farms and made lakes and reservoirs（水库） out of rivers for irrigation purposes or hydroelectric power（发电站）. Man has also modified（修改） the face of the earth by draining marshes(排干沼泽) and cutting through mountains to build roads and railways.
However, man's changes to the physical environment have not always had beneficial（有利的）results. Today, pollution of the air and water is an increasing danger to the health of the planet. Each day thousands of tons of gases come out of the exhausts of motor vehicles. Smoke from factories pollutes the air of industrialized areas and the surrounding areas of the countryside. The pollution of water is equally harmful. The whole ecological（生态的） balance of the sea is being changed and industrial wastes have already made many rivers lifeless.
Now environmental protection is more pressing than ever before. As we know, massive destruction（毁灭）of environment has brought about negative effects and even poses a great threat (威胁)to man's existence. Indifference to these problems will mean committing suicide. Therefore, effective measures should be taken and laws passed to conserve（保护） environment. Otherwise, man is certain to suffer from the serious consequences（后果）caused by this lack of care for his living surroundings.
[写作内容]
以约30个词概括短文的要点；然后以约120个词就“如何保护地球环境”
这一主题发表看法，并包括如下要点：
作业应正、反面纸都使用，不要浪费纸张；
尽可能不使用一次性物品，提倡循环使用；
应根据自己实际饭量买饭，避免剩饭剩菜造成浪费；
破旧衣服可以继续使用，既节约又不给环境增加污染源。
[写作要求] 可以使用实例或其它论述方法支持你的论点，也可以参照阅读
材料的内容，但不得直接引用原文中的句子。
[评分标准] 概括准确、语言规范、内容合适，篇章连贯。
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