二：Write a short essay of about 150 words explaining what we

二：Write a short essay of about 150 words explaining what we can do to help slow down global waming .your essay should cover the following points :1.what factors led to the steadily rising concentration of dioxide in the atmosphere.2.what measures can be taken to prevent further increase of carbon dioxide in the atmosphere 3.what we can do as individuals to help the effort to stop global warming.三：Write a paragraph of 120-150 words analyzing some of the causes of cheating in American schools.The following ideas may help you in your writing.1:increase in the use of state exams 2:lack of self-confidence 3:influence of parents and books on children 4:negative effect of some efforts to prevent cheating 5:distrust 第三篇主要是写一些关于作弊的问题,关于学生作弊的方式,心理~
这个一共是两篇英语作文,二是一篇,三是一篇~

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.