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1、1. Problems in the New Century (举例法说明文)Write an expository essay on the problems man will be faced with in the new century.In the new century, human beings will be filled with hope and live more advanced life. What used to be depicted in science fictions can be the reality of the near future. Howeve
2、r, man will also have to confront with some problems that will curtail(剥夺)human beings of their existence. First of all, pollution of all forms such as land pollution, noise pollution, air pollution and water pollution are worsening with each passing day. People complain all over the world that it i
3、s becoming harder to breathe and water is turning undrinkable. Also forests are being felled at a very fast rate. The pollutions are getting so terrible that in some countries we cant find clean and clear rivers and white clouds in the sky! When the children draw a picture of their surroundings, the
4、y paint the green trees in gray, the red sun in gray, everything in gray, and they cant find a pure environment except in the books.Additionally, the explosion of population in some parts of the world is manifesting its terrible results. Human beings wil1 have outgrown the earths resources, and peop
5、le will run a high risk of starvation and diseases resulting from overcrowding. In due course, man would be forced out of the earth if the present trend were not reversed.What is more, in the past century we had many disastrous wars. But there is still potential that the atomic bomb will be used by
6、some politicians in order to keep regional hegemony. If it should happen, the exp1osion could easily lead to the destruction of civilization. More seriously, the depersonalization of human relationships and the weakening of spiritual values are aggravating due to the stress caused by the busy schedu
7、les and the extreme pursuit of money. This will further contribute to mans isolation and loneliness.Apparently, with all these problems facing human beings, it seems to be overwhelmingly urgent to conquer them one by one because we have only one earth and it is our home. In the new century, we must
8、try our best to heal the world and make it a better place for you, for me and for the children who will come to this world. 2. The expenses of college students are high （举例法说明文）According to one of my teachers who graduated from university in 1983, his college expenses were only about 20 yuans per mo
9、nth, covering everything, such as food, and daily necessities. About twenty years later, the expenses of college students are dizzily/staggeringly high and growing more so every year. The basic average cost per student at public universities is now estimated at 15,000 yuans or more, including all th
10、e expenses for food, tuition, accommodations, bills for communications and fare for transportation, and other fees. The public universities having the benefits of receiving government investment in higher education are charging students high, to say nothing of the private universities which run on t
11、heir own capacity.Take myself as an example. At the beginning of this term, I was charged more than 6,500 yuans for the tuition of the academic year, plus 300 yuans per month for my dormitory accommodation, 500 yuans for the expenses on food, clothes and trivial items, 50 yuans for my mobile phone,
12、etc. Every year, the expenditure totals as much as 20,000 yuans, which has eaten into almost half of my parents annual incomes.Because going to college is so expensive today, many students have to drop out and go to work early, while others take part-time jobs to earn some money in order to lighten
13、their parents financial burden. I am really keen on the experience in attending the universities and I have acquired a lot of knowledge since I came to this university. I am grateful to my parents who work hard and live thriftily to support me. Because of this, I am not only very careful in spending
14、 money, but also studying hard to live up to my parents expectation. Someday, I can say to them that every penny they have spent on my study is worthwhile and will be paid off. 3. Effects of Chinas single-child policy （因果法说明文）Huge population is one of the main problems in China. Since the 1970s the
15、Chinese government adopted a policy of family planning- single-child policy- as a basic state policy to solve this problem. Until now, this birth control policy is still implanted in our country and both positive and negative effects have been harvested.With the adoption of the family planning polic
16、y, the rate of population growth has been successfully controlled. This has already brought about some satisfactory results in China. For one thing, peoples living standard has been greatly improved with our country becoming more and more prosperous, and our national economy developed steadily. Furthermore, with decreasing population, the problem of shortage of water in parts of China is solved gradually. In addition, with the low rate of b
