公共英语三级写作范文
全国英语等级考试PETS三级考试由笔试试卷和口试试卷组成。笔试试卷(120分钟)分四部分：听力、英语知识运用、阅读理解和写作,口试试卷(10分钟)。下面是关于作文的练习，同学们可以多练习下。
一、
Below is a chart showing the global water supply. Write an essay of about 120 words making references to the following points:
1) describe the percentage of different kinds of water supply of the world;
2) analyze the current situation of fresh water on earth;
3) give the possible reasons for this situation.
「参考范文」
Water is a precious resource. Although we are surrounded by it in oceans, lakes, rivers and streams, our supply is limited. The chart given shows that most of the water on earth — 97.4 percent — is salt water stored in oceans. Only 2.6 percent of the earth's water is fresh water, and 2 percent is locked up in ice caps and glaciers. Thus the fresh water left for us to use is only 0.6 percent of the total water supply.
There will never be any more fresh water than there is now. In fact, the earth is short of fresh water. Besides, the increasing growth of the world population, the growing demand of industry for water, the serious pollution of our environment — all this makes the world in danger of running out of fresh water. In some large cities such as Tianjin, fresh water cannot meet the daily needs.
Since water is essential to all life and the supply limited, we must manage it intelligently and carefully.
二、
A survey conducted in Tianjin found that 98% of high school students and 92% of elementary school students have to spend most of their weekends doing homework.
Write an essay of about 120 words. You may include the following points:
1. Discuss the negative effects of too much homework on children.
2. Discuss the disadvantages of the present exam-oriented education system.
3. Call for efforts to ease students' burden and help them lead a colorful and enjoyable life.
「参考范文」
Too much homework has become a common complaint in high schools and elementary schools. Students have to spend most of their time doing homework, even on weekends. As a result, they have no time for their hobbies, or for their parents or friends. All they do is what they have to do, not what they like to do.
The underlying cause for this phenomenon lies in the present exam-oriented education system. National College Entrance Examination has become the sole focus of teachers, parents, and students themselves. High score becomes the ultimate goal, to the neglect of practical abilities, personality development, and all that.
It is urgent that we deepen our educational reform. We must allow for students' overall development, not just evaluate their test scores.
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