帮忙写四篇高中英语作文！主题是：环境污染；温室效应；朋友；音乐。按这四个主题发挥，字数200左右 急！！帮忙英语作文！。。谢谢
I read a piece of news recently. It says that in Japan marly businessmen ave selling fresh air to customers.and now it is becoming more and more popular. Why? --Fresh air is getting less and less in Japan, and so is it in the U. S. A.
In fact, environmental pollution is a very serious problem the whole world is facing.
it is mainly caused by the waste products released from artificial substances, industrial
production and increased consumption of goods. Bedsides, the use of chemical substances
in agriculture also causes environmental pollution. Look at the sky, you can see that dense smoke is being released from the high and big chimneys; those dirty and poisonous substances are flowing into the rivers that we use for drinking water and millions of tons of waste products are heaping around us.
How to change this condition? More and more countries are trying to work out some effective means to bring it under control, but no great success has been made.
环境污染
最近我读了一则消息说在日本，许多商人向顾客出售新鲜空气，现在这种情况越演越烈。为什么呢? 因为在日本新鲜空气越来越少，在美国也是如此。
事实上，环境污染是整个世界正在面临的一个严重问题。这主要是由于人造物质，工业生产过程中所产生的废料以及消费商品的增长造成的。另外，在农业中使用化学物品也造成了环境污染。看看天空，你可以看到浓烟从高大的烟囱中释放出来，这些脏而有毒的物质流入我们赖以饮水的河流，数百万吨废物正堆积在我们周围。
怎样改变这种状况呢？越来越多的国家正在试图拟定出一些有效措施控制环境污染，但至今成效不大。
Friends are very important to us. When in trouble, we need friends to offer us en couragement and help. With success achieved, we also need friends to share our joys. It's hard to imagine life without friendship!
A person should make as many friends as he can. The more friends he has, the more meaningful his life will be. Similarly, a country, too, needs friends. China today, for example, has friends all over the world. With the open policy being successfully carried out, she is certain to make more friends in the future.
However,real friends are not easy to find. That's why we highly value our friend ship with them. False friends also exist. They may have a bad influence on our character and are even worse open enemies. Therefore, it is essential we take care in making friends.
朋友
朋友对我们非常重要。当遇到困难时，我们需要朋友给予鼓励和帮助：获得了成功，我们也需要朋友分享我们的欢乐。没有友谊的生活是难以想象的! 一个人应广交朋友。朋友越多，他的生活将更有意义。同样，一个国家也需要朋友。譬如，今天的中国，朋友遍天下。随着开放政策成功的施行，中国将会有更多的朋友。
然而，真正的朋友却不易寻觅。这就是为什么我们非常珍视朋友之间友谊的原因。假朋友也是存在的，他们对我们的品格有不良影响，甚至是更坏的公开敌人。因
此，根本的问题在于慎重交友。
Music-音乐
点击数：3210 更新时间：2006-6-15 14:48:42 翻译本页
Music
There are two important kinds of music in the world one is written down and the other is not. Many people earn their living by writing music. They write songs for popstars and music for films and TV plays. They usually write exact instructions how the music is to be played.
Folk music has been passed down from one generation to another. At first it was never written down. Pe pie learnt the songs from their families, relatives, neighbours and friends in the same village. These songs were about country life, the seasons, animals and plants, and about love and sadness in people's lives.
Early performers of music were popular and respected. They used to learn hundreds of songs by heart. On festivals they used to act and sing in praise of heroes who lived long ago. This was at a time when there was no radio, TV or cinema. Many of the country people could neither read nor write. In this way stories were passed on from one person to another. This continues in some countries even today.
In some parts of the world nowadays, you often see musiclans performing in the streets to passers by. They put a cap on the ground in front of them, so that people who like the music can drop coins into it.
[点评]
文章对音乐的种类以及流传方式作了描述。后两段实际上主要讲述音乐人的情况，似乎多少有些不切主题——音乐本身。此文可作为参考资料。
[参考译文]
音乐
世界上的音乐有两大类——一类是写下来的，另一类是没有写下来的。许多人靠写词作曲来谋生。他们给通俗歌星创作歌曲，为电影和电视节目作曲。他们通常还要为如何演奏他们的音乐写出精确的说明。
民间音乐是一代一代地流传下来的。起初从来没有人把它写下来过。人们是从家人、亲戚、村里的邻居或朋友那里学会唱这些歌的。歌词内容是有关乡村生活、季节、动植物以及人的生活中的爱情与忧伤。
早期的音乐演奏家们是深受人们欢迎和爱戴的。他们牢记几百首歌曲。在节日里他们表演并歌颂很久以前的英雄。这是广播、电视或电影出现以前的情形。当时许多乡里人不识字，也不会写字。故事就是用这种方式流传下来的。即使今天，有些国家里还存在这种情况。
现在世界上有些地区，你还可以经常看到音乐家在街头为行人演奏。他们把帽子放在身前的地上，以便喜欢这种音乐的人能把硬币投到帽子里。
Today I read a report from China Daily. It reports that numerous fishes in Haihe River die from serious pollution. It surprised me so deeply.
As we all know, environment pollution’ does great harm to living things and human. But a few of people didn’t realize it. River pollution, white pollution and so on are all around us.
Fortunately, most of people realize:it and they are active in protecting environment. Beijing will hold the Olympic Games in 2008. We are all proud of it. Meanwhile, we should protect environment.
As a senior student, I also should protect it. I should do things that are good for environment. No matter it is big or small.
I hope the sky will be more bright, the air will more clear, the environment will more beautiful when, Beijing hold Olympic Games in 2008. For this, I’ll study hard and try my best to protect environment.
今天，我读了《China Daily》上的一篇报道，说的是由于污染，海河里出现了无数的死鱼，这让我很吃惊。
众所周知，环境污染对生物和我们人类都有极大的危害，但是有一些人却没有认识到这一点。河流污染、白色污染等等都包围着我们。
幸运的是，绝大多数人认识到了这一点并积极地保护环境。北京将举办2008年奥运会，这让我们都自豪不已，与此同时，我们更应保护环境。
作为一个高中生，我也应该保护环境，我应该做所有对环境有益的事，无论大事小事。
到2008年北京举办奥运会的时候，我希望那时的蓝天更明亮，空气更清新，环境更美丽!为了这一切，我会加倍地努力学习，尽我最大的努力保护环境。
急........帮忙写两篇英语作文，谢谢了 ~~~~~
二：关于温室效应的The Global Warming
With the development of economy, People around the world may feel that the climate has been getting steadily warmer and warmer in recent years.CO2 makes up about 70% of the greenhouse gases, which is considered to be one of the greatest causes of global warming.
There are many harmful effects. It cause the sea level to rise and many natural disasters to strike.What is more, it disturbs weather patterns, causing droughts, severe storms, hurricanes (飓风). People suffer a lot from disasters relevant to global warming.
It is urgent that immediate and effective actions should be taken right away. First, more trees need to be planted to help improve and beautify the environment. Besides, stricter laws concerning global warming and irresponsible use of fuel resources have to be put into effect and achieved good results. In a word, there is a long way to go before we can take a comfortable world for granted again .Do it. Do it right. Do it right now.三： NO Cheating
With the development of the society, people pay more and more attention to education. As a result, thousands of students take part in various examinations. However, some students have been found cheating on their exams. Some of them copy from each others, some took out their textbooks or reference books to copy, some copied from small pieces of paper on which they had prepared for the exam, still some used the modern communication tools such as BP, mobile phone as a way to cheat on exams.
Then, what’s the effect of cheating on exam? There are three factors for this. First, it results in an unfair competition and will destroy the creativity of those bright students. Second, it will ruin the students’ self-confidence in the long run. Third, under that kind of circumstances, the students graduated from the schools will not be the one who can meet the need of the society.
However, how to stop cheating on exam? In my opinion, there are two ways we can adopt. First, a severe punishment should be put into effect to prevent students from cheating. Second, great effort should be made to make students understand what kind of person the society needs and try to improve their self-confidence. 关于作弊的问题Be Yourself and Not a Cheater
Parents,teachers,even friends can put a lot of pressure on students to get good grades.Some parents threaten to punish for bad grades or offer rewards for good marks.That makes most students think of cheating at some time.But these kids also know that succeeding on a test by cheating is not really succeeding at all.
When students cheat,they are less likely to really understand their schoolwork.And when you don't understand your schoolwork,your grades will probably suffer;cheating can only get you so far.The bottom line is:If you don't learn it now,you'll probably have to learn it later!An honest C will get you much further than a not-so-honest A. Face it:Cheaters never succeed----and pay a high price when caught.
So,that's why you ought not to cheat.Be honest and open about who you really are.And you'll one day find it so meaningful to your personal life.
什么是温室效应？有什么危害？
温室有两个特点：温度较室外高，不散热。 生活中我们可以见到的玻璃育花房和蔬菜大棚就是典型的温室。使用玻璃或透明塑料薄膜来做温室，是让太阳光能够直接照射进温室，加热室内空气，而玻璃或透明塑料薄膜又可以不让室内的热空气向外散发，使室内的温度保持高于外界的状态，以提供有利于植物快速生长的条件。
由环境污染引起的温室效应是指地球表面变热的现象。
它会带来以下列几种严重恶果：
1) 地球上的病虫害增加；
2) 海平面上升；
3) 气候反常，海洋风暴增多；
4) 土地干旱，沙漠化面积增大。
科学家预测：如果地球表面温度的升高按现在的速度继续发展，到2050年全球温度将上升2－4摄氏度，南北极地冰山将大幅度融化，导致海平面大大上升，一些岛屿国家和沿海城市将淹于水中，其中包括几个著名的国际大城市：纽约，上海，东京和悉尼。
温室效应是怎么来的？我们能做什么？
温室效应主要是由于现代化工业社会过多燃烧煤炭、石油和天然气，这些燃料燃烧后放出大量的二氧化碳气体进入大气造成的。
二氧化碳气体具有吸热和隔热的功能。它在大气中增多的结果是形成一种无形的玻璃罩，使太阳辐射到地球上的热量无法向外层空间发散，其结果是地球表面变热起来。因此，二氧化碳也被称为温室气体。
人类活动和大自然还排放其他温室气体，它们是：氯氟烃（CFC〕、甲烷、低空臭氧、和氮氧化物气体、地球上可以吸收大量二氧化碳的是海洋中的浮游生物和陆地上的森林，尤其是热带雨林。
为减少大气中过多的二氧化碳，一方面需要人们尽量节约用电（因为发电烧煤〕，少开汽车。另一方面保护好森林和海洋，比如不乱砍滥伐森林，不让海洋受到污染以保护浮游生物的生存。我们还可以通过植树造林，减少使用一次性方便木筷，节约纸张（造纸用木材〕，不践踏草坪等等行动来保护绿色植物，使它们多吸收二氧化碳来帮助减缓温室效应。
(翻译）
What is the greenhouse effect? What harm?
Two characteristics: greenhouse temperature is high, no heat, outdoor. We can meet in life of glass (a greenhouse and vegetable is typical of greenhouse. Use transparent glass or plastic greenhouse, is to allow sunlight to direct illuminate, heating indoor air into the greenhouse, transparent glass or plastic film and can not make indoor air outside sends out, make indoor temperature remains above the state, in order to provide outside for plant growth conditions.
The environmental pollution caused by greenhouse refers to the heat of the earth's surface.
It will bring to the following several serious consequences:
1) on the earth; the pest
2) rising seas,
3) ocean storms abnormal weather, increase,
4) land desertification and drought is increasing.
Scientists predict: if the earth's surface temperature at its present rate, by 2050 to continue the development of global temperatures will rise by 2-4 degrees Celsius, south polar ice melts in rising greatly, will rise greatly, some islands and coastal cities will be flooded in water, including several famous international cities: New York, Shanghai, Tokyo and Sydney.
What is the greenhouse effect? What can we do?
The greenhouse effect is mainly due to the modern industrial society overmuch burning coal, oil and gas, the fuel burning after release large amounts of carbon dioxide into the atmosphere.
Carbon dioxide gas, heat insulation and heat with the function. It is in the atmosphere is formed a kind of aeriform glass, make the sun radiate to heat the earth can spread from outer space, the result is the earth's surface heat up. Therefore, also called the greenhouse gas carbon dioxide.
Human activities and nature also emissions of greenhouse gases and other, they are: LvFuTing (CFC), methane, low nitrogen gas, ozone and on earth can absorb carbon dioxide is a Marine plankton and continental forests, especially tropical rainforest.
To reduce the atmosphere of carbon dioxide, on the one hand, need much people try to save electricity (because power, less coal burning car. On the other hand to protect forests and sea, for instance, don't let not overcutting forest to protect Marine pollution of plankton. We can also through afforestation, reduce the use of disposable wooden chopsticks, convenient save paper, wood pulp (with no trample on the lawn, action to protect the green plant, make them more carbon dioxide to help alleviate the greenhouse effect.
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