高二英语作文：何如维持友谊(精彩20篇)

The large number of our population has become one of the most serious

problems of our society. According to a recent survey of the National Bureau of

Statistics, there are more than 1.3 billion people in our country, which account

for about 1/5 of all the people in the world. the same survey also predicts that

our population will grow quickly in the years to come.

Overpopulation has brought about a series of negative effects to our

economic development and social security. In the first place, too many people

impose a heavy burden on our environment. As a result, we suffer from a shortage

of fresh water and natural resources. In the second place, as the supply of

labor GREatly exceeds the demand of the society, many people become employed.

This is a source of social unrest. Last but not least, we have to manufacture

all kinds of products to meet the needs of the people, which causes environment

pollution to our lakes and land.

Serious though the problem seems, we have to take some measures to tackle

it. On the one hand, the government should carry out more strictly the policy of

family planning, thus reducing the total number of population. On the other

hand, all the people should realize the harms of overpopulation. With the

concerted efforts of all the parties concerned, we’re sure to solve the problem

in the future.

Generally speaking, the wise regard these sad things as their valuable

experiences which are indispensable in their life. Whats more, never do they

have sadness haunt themselves. Quickly, they get rid of sadness and find new

pleasures of life. Thus, their life always seems so fine. On the contrary, some

pessimists always have sadness haunt them. Their mind always wanders into past

sad events, which results in their moodiness and vexation daylong, and even

causes sleepless nights, poor diets, frequent headaches, etc. Obviously, none of

these results is what we want.

To be successful, students learn many knowledge so as to master as more

skills as possible. Some believe that the key to realize our dreams is to work

hard and others treat chance in the first place. While today is the information

world, the one who masters the all-sided source will have more chances to be

successful. In my opinion, the most important skill is the social skill, because

we need to make connection with others, we are not doing business with

ourselves, so it is in need of having relationship with others. The good social

skill can help us attract attention easily and impress the future partner. If we

are bad in communicating, how can we let others know our advantages and trust

us. So promoting ourselves is the first job, from now on, don’t be shy.

In China, the period of high school is very important for students, they will go to college after finishing high school. Because there are so many students in our country, the students have to take the college entrance exam, the test will decide which school they should go to. Every student in high school will study many course, when the second year comes, students will choose some courses for the college entrance exam. The first thing they should pay attention to is to measure what subject they are good at. Some students are good at math and geography, these students are always weak in politics, then they should keep on learning science. Some students are good at Chinese and English, they should choose to study art. What if the students are good at both? I will advise them to learn the course they are interested.

在中国，高中时期对于学生来说是很重要的，完成高中的课程以后，他们就要上大学。因为我国有很多学生，因此学生不得不参加高考，高考将会决定他们去哪所学校。每个学生在高中都要学很多课程，当第二年到来的时候，学生将要选择一些针对高考的课程。他们要注意的第一件事就是衡量他们擅长的科目。一些学生擅长数学和物理，他们总是不擅长政治，他们应该继续学习理科。一些学生擅长语文和英语，他们应该选择文科。如果学生两者都擅长呢?我会建议他们选择他们感兴趣的科目。

Iraq is a part of the Middle East next to Iran & Kuwait. It is very

important to the rest of the world because of its underground petroleum

fields.

It is said that oil is industrial blood and for this reason perhaps the war

started.

On September 11,2001,the Twin Towers in New York as well as parts of the

Pentagon were destroyed by an airplane planned by terrorists, which made George

Bush declared to fight the country’s enemies.It was said that Iraq still

possessed many weapons of mass destruction and weapon inspectors were sent to

the country by the UN to find the clues.Though no evidence was found, America

still wanted to go to war with Iraq and the main target is Sadam Hussein. The

war was just like the quiet battle between France and China in 1800s.It was said

that a relation of Sadam betrayed him.

I think war is not just a matter of two persons or two-family fight. It is

related to so many victims’ inrerests . As a leader, one must always think for

al

the people, so will his country be prosperous for always.

The years are long, and my dreams are still there; In the mottled memory of

life, there are bound to be twists and turns and hardships in the middle. When

you encounter setbacks, do you face it calmly, or do you avoid it?

In fact, setbacks are a valuable asset in life. When we are in adversity,

it is the process of accumulating wealth.

Setbacks are the cornerstone of the road to success. Learning to accept

setbacks and accepting reality will inspire fighting spirit and move forward

bravely. Just like President Lincoln, he faced adversity in his life, 8

elections and 8 failures, but it is precisely because of his selflessness,

fearlessness and courage to face that he succeeded and fulfilled his personal

dreams. Indeed, only by being brave enough to accept setbacks and constantly

accumulating life experience can we reap the first pot of gold in life.

Frustration is the lubricant of life. When the wheel of life is driving on

the rough trails, the thorns of the roadside become our obstacles. Its like the

journey of life on the sea, suddenly encountering violent storms; when the young

butterfly breaking its cocoon into a butterfly breaks its wings... There is

always a little unsatisfactory in life, as Tagore said: "God is entirely to

strengthen our will, Thats why we set up many obstacles on our way." But at the

same time as we lost, we gained the confidence and courage to deal with

setbacks, so that we can continue to improve and improve.

Setbacks are a poem in life, and inspiration after facing the difficulties

in life. Although the poet Qu Yuan is full of talent and loyalty, he encounters

the faint-hearted King Huai of Chu; Yue Fei drives his army north, vowing to

attack Huanglong and restore the Central Plains, but he is recalled to Linan by

twelve gold medals. These insightful people have experienced setbacks and

regrets. Qu Yuan sang the eternal quatrain of "Long too much breath to cover up

tears, mourning how difficult the peoples life is", full of the poets great

feelings, interpreting the deepest call of the poets soul. So frustration

exudes a kind of poetic beauty, a flicker of the spiritual light of beauty, and

a beautiful spark of free spirit flying in the vast world.

Frustration is a key to interpreting life. Life is like climbing a

mountain. In this mountain, there is never a shortage of people who climb it,

but some people give up halfway and see only a small piece of scenery around

them; Small", harvest the most beautiful scenery. When life encounters setbacks,

only persistence is the shortcut to success.

Frustration has two sides. If we see it as an ugly garment, then we are

really blocking its light; if we see it as a strong cloth, then we will walk

forward and not. Fear of restraint. Therefore, we should treat setbacks

correctly, because we always believe that adversity makes talents.

Learn to face setbacks. When we encounter setbacks, we will have more

indifference in our hearts. Setbacks are not terrible, but will bring us

strength and courage, which is an indispensable wealth in life.

Our school is far away from the downtown. As a result, it is a good place

for students to study. We won’t be disturbed by the crowded people and the

noise. For me, I like the scenery in the campus, trees are around, especially

when I look out of the window in the break time. I will look at the scenery that

is far away, sometimes I can see birds flying. There is a road that circles the

mountain, which looks like a snake. When cars are driving in the road, I will be

wondering who is coming, maybe our parents or just some strangers. The scenery

outside the window provides me another world. I like to think about a lot of

questions and sometimes my thought will go around the mountain. This is my

little world.

In my contact with all people, have their own friendship, have their own good friend. I have not a good friend, however, has yet to get their own friendship. Every day I live in a persons world, although the classmates will play with me, but I did not feel the taste of a friend. Can ever since that happened after that one, I am very anxious to have a pure friendship.

That is what happened in the five grade, there were two students in their relationship is very good, very deep friendship, brothers. One day, xiao li due to illness can not to school, he also shed a lot of homework. After his recovery, to school, because of absence from school, his grades plummet, from ninety something dropped to below 6 very fast, he is very upset. After huang know, also very worried, because she know xiao li is due to absence from school result is bad, and now also graduating class, the only way is to her to give him make up a missed lesson. So she went to help him with his homework after school every day. She every day so, friendship is more valuable.

There will always be paid what everyone, friends back to its previous state. When he was asked why she wanted to help, she always said: "he is my good friend, as his friend, I cant help?"

She said deeply branded in my mind, I came out from a cool environment, eager to get belongs to own the friendship, I have understood everything. I want to, I can get your friendship!

在我接触过的所有人中，都拥有自己的友谊,有自己的好朋友。然而，我却没有一个好朋友，至今还没有得到属于自己的友谊。我每天生活在一个人的世界里，虽然同学们会和我玩，但是我都没有感觉到一种朋友的滋味。可自从发生过那一件事后，我非常渴望拥有一份纯真的友谊。

那是在五年级时发生的事情，当时有两个同学他们的关系很好，友谊很深，情同手足。一天，小李由于生病不能到学校上课，他的功课也落下了不少。等他的身体恢复之后，到学校上课，由于缺课，他的成绩一落千丈，从九十几分迅速地降到了六十分以下，他很苦恼。小黄知道后，也非常担心，因为她知道小李是由于缺课所导致成绩不好，而且现在又是毕业班，唯一的办法就是她给他补课。于是她每天放学就去他家帮他补习功课。她这样每天坚持着，之间的友情真是难能可贵。

每一个人的付出总是有回报的，朋友的成绩又恢复到以前的状态。当有人问她为什么要帮助他时，她总会说：“他是我的好朋友，作为他的朋友我能不帮吗?”

她说的话深深地烙在我的脑海里，令我从阴凉的环境中走了出来，渴望得到属于自己的友谊的我，已经明白了一切。我想，我会得到自己的友谊的!

Knowledge can be acquired from many sources. These include books, teachers and practical experience, and each has its own advantages. The knowledge we gain from books and formal education enables us to learn about things that we have no opportunity to experience in daily life. We can study all the places in the world and learn from people we will never meet in our lifetime, just by reading about them in books. We can also develop our analytical skills and learn how to view and interpret the world around us in different ways. Furthermore, we can learn from the past by reading books. In this way, we won’t repeat the mistakes of others and can build on their achievements.

获得知识的来源有很多。这些包括书籍，教师和实践经验，每个人都有自己的优点。知识从书本上及正规教育使我们知道在日常生活中没有机会经历的事情。我们可以研究世界各地的人学习我们不会在我们的有生之年遇见，只在书上读到的人。我们也可以培养分析的技巧，并学习如何看待和理解我们周围的世界以不同的方式。此外，我们可以从过去中学习，通过阅读书籍。这样，我们就不会再重复别人的错误，并且能够以他人的成就。

Practical experience, on the other hand, can give us more useful knowledge. It is said that one learns best by doing, and I believe that this is true, whether one is successful or not. In fact, I think making mistakes is the best way to learn. Moreover, if one wants to make new advances, it is necessary to act. Innovations do not come about through reading but through experimentation. Finally, one can apply the skills and insights gained through the study of books to practical experience, making an already meaningful experience more meaningful. However, unless it is applied to real experiences, book knowledge remains theoretical and, in the end, is useless. That is why I believe that knowledge gained from practical experience is more important than that acquired from books.

实践经验，另一方面，可以给我们更多有用的知识。这是说从做中学的效果最好，我相信这是真的，无论一个人成功与否。事实上，我认为犯错是最好的学习方式。此外，如果想要有新的进展，这是必要的行动。创新不能只靠阅读是实验。最后，我们可以将所获得的技巧和见解通过书籍来实践经验的研究，使得原本有意义的经验变得更有意义。然而，除非它应用于实际经验，书本知识是理论和，最后，是无用的。那就是为什么我会认为从实际经验中获得的知识比从书本中学到的更重要。

People travel by plane, by train, by ship, by bus. To me, the best way of

traveling on a summer vacation is to go on foot.

My preference depends on the purpose of the travel. On a summer vacation I

travel to refresh myself and to see the countryside. When I use my feet and walk

on a grass covered path along a river or among the hills I feel detached from

the noise of the city and closer to the nature. And when I travel on foot I get

more freedom. I can plan my own schedule. I can choose my own route. I can stop

where I like. And I can see things and people that I might miss if I travel on a

train or on a bus. net

When faster and more convenient ways for travel are becoming available, I

still favor using my own feet. I get much pleasure from it. People travel by

plane, by train, by ship, by bus. To me, the best way of traveling on a summer

vacation is to go on foot.

Since I go to high school, I have many annoyances. On the one hand, I am

under great pressure on my study, I need to take the exams every month, once I

am falling behind other students, I will feel that I am not doing well. I always

want to be the best, but things cant go on my way. On the other hand, I dont

want to talk to my parents, if they ask me the questions, I will answer them

with few words. I think they wont understand me, so I am not willing to

communicate with my parents. I know I am in the adolescence, my body grows fast,

changes happen on me, my emotion is unstable. So I need to learn to adjust

myself and get used to these changes. I need to open my heart and have less

pressure.

Different people have different career outlooks. Some people want to become civil servants; some people hope to start their own business; some people dream of being freelancers, and so on.

不同的人有着不同的职业愿景。有些人想要做公务员，有的人想自己创业，有的人梦想成为自由职业者等等。

However, my ideal job is teaching. Firstly, I’m told that teachers have a high income. With the high income, I can open a training school to help the children in poor families with their education. Secondly, teachers always have summer and winter holidays, thus I will have more free time to relax myself. More importantly, teachers are angels to students, who can pass on the knowledge to students as well as help them develop their hobbies and interests. I can’t imagine how happy I will feel when I see my students become elites.

然而，我的理想是教书。首先，我被告知老师的工资很高。若有很高的工资，那我就能开个培训学校来帮助那些贫困家庭的孩子。第二，老师有着寒暑假两个长假期，如此我将有时间放松。更重要的是，对学生来说老师就是天使，传授孩子们知识帮助他们培养自己的兴趣爱好。我无法想象如果我的学生都成为人才，我会多么的开心。

In order to be a qualified teacher, I should read more books to acquire more knowledge, and train my patience and improve my communication and handwriting abilities.

为了成为一名合格的老师，我会读更多的知识从中汲取更多知识，锻炼自己的耐心，提高自己的交际能力并提高自己的书写水平。

Learners of English, especially beginners have troubles in understanding

speeches by native speakers. Bur how to improve listening ability? Here Id like

to introduce you some ways which might help you to improve you listening

ability.

First of all, do things step by step. It is no good to listen to anything

beyond your level . Dont choose too difficult materials .

Secondly, stick to one course of study . Work hard at it until you master

it well .

Thirdly, listen to the English news program over the radio every day. If

you have more time, listen to some interesting stories, too.

There are many ways to improve your listening ability . It is up to you to

find out best ones for you.

Nowadays, electronic music is very popular around the world. First

electronic music got popular from Lady Gaga, her creative dressing styles caught

peoples attention and then people started to notice her music. They fell in

love with her electronic music. Unlike rock and roll music, electronic music is

more favorable by me. It makes me excited and I am totally lost in the wonderful

music. Once my friends and I went to a music festival. There were so many people

standing there and listening to the music. Especially when the DJ came out and

everybody got excited. When the DJ played electronic music, my friends and I

shook our bodies and joined the crowd to dance. It was such a wonderful

experience for me. I will never forget the power of electronic music. It brings

people together and share the same emotion.

When we are small, the teacher told us that we should help others, offering help to someone who is in need of help is Chinese tradition. Today, we see people give their hands to the old and the weak, we are happy to see that, but some negative examples exist at the same time. It has been reported that a woman was jumping off a bridge, many people saw it, but they just took out their cellphones and took the picture, no one tried to stop the woman. It is so angry that people become so cold blooded, they just like the murders. We need to offer people help, but we must take care of our security, or we not only fail to rescue people, but also lose our lives. Saving people sometimes needs to use wisdom, if we can persuade them from killing themselves, we are successful in stopping the tragedy.

当我们还小的时候，老师告诉我们应该要帮助他人，帮助那些需要帮助的人是中国的传统。今天，我们看到人们给予老人和弱者帮助，我们很高兴看到这些，但是同时一些不好的例子也存在着。据报道，有一个女人正想要跳下桥，很多人围观，但是他们只是拿出手机来拍照片，没有人想要阻止这个女人。人们变得这么冷血，多么令人生气啊，他们就如凶手。我们需要给人提供帮助，但是我们也要注意自身的安全，不然不仅不能救人，还会丢掉自身的性命。救人有时候是需要智慧的，如果我们能劝服别人不自杀，就成功地阻止了悲剧的发生。

Learning a foreign language is an enriching undertaking. To make the most of your experience, you may need to develop some specialized strategies. Here are some principles to keep in mind.

1. Language is more than a set of grammar rules. Although structural accuracy is an important component of communication, you must also learn how to communicate in a manner that is appropriate to the situation. Likewise, in addition to building a large vocabulary, you will also need to learn ways of paraphrasing so that you will be able to communicate effectively when you don’t know an expression or it has slipped your mind. Body language and gestures are also important communicative strategies.

2. Active language use is far more important than talking about language. The ability to recite the rules of English grammar does not guarantee that you will actually be able to communicate in the language. Spend your time communicating in the language, creating messages, obtaining information, listening for details and so on.

3. Don’t be afraid of making errors. Errors are a natural part of the language learning process and no one can avoid them. Do not let fear of making an error prevent you from communicating. Even if your language ability is not perfect, your message may be understood. Of course, accurate use of language is an appropriate goal of language study.

4. Language learning is a long-time process. Therefore you must have realistic expectations of your performance after one semester, one year, or several years of language learning. Advanced proficiency is often best achieved after long period of practice and residence in a country where the target language is spoken.

5. Be an active language learner. Study models, look for patterns, and make informed guesses, study idioms. If you do not entirely understand a passage, do not ask for a translation immediately. Make use of the language you already know or words that may be related to other words you know. Although language learning can be hard work, your efforts will be rewarded with a deeper understanding of yourself and the global village of which you are a citizen.

学习一门外语是一个丰富的任务。充分利用你的经验,你可能需要开发一些专门的策略。这里有一些原则要牢记。

1。语言不仅仅是一套语法规则。虽然结构精度是通信的一个重要组成部分,你还必须学会如何沟通的方式是适当的。同样,在构建大型词汇表之外,您还需要学习的方法套用,这样你将能够有效沟通当你不知道一个表达式或溜你的头脑。肢体语言和手势也很重要的交际策略。

2。积极的语言使用比谈论语言更为重要。背诵英语语法规则的能力并不能保证你会可以用语言交流。花费你的时间在语言交流,创建信息,获取信息,听细节等等。

3。不要害怕犯错误。错误是语言学习过程的一部分,没有人能避免他们。不要让害怕出错阻止你交流。即使你的语言能力并不完美,你的信息可能会被理解。当然,准确的使用语言是语言学习的一个适当的目标。

4。语言学习是一个长期的过程。因此你必须有现实的期望的性能在一个学期之后,一年或几年的语言学习。先进水平通常是最好的实现经过长期的实践和居住在中国,目标语言是口头的。

5。是一个积极的语言学习者。研究模型,寻找规律,作出明智的猜测,研究习语。如果你不完全理解一段,不要求立即翻译。利用语言的你已经知道或者单词,可能与其他单词你知道的。虽然语言学习是艰苦的工作,你的付出会得到回报,更深入地理解自己和地球村的公民。

Once I saw the TV show, it was about the fathers and their kids having the match, they were separated by five groups and compete for the match. At first, they were competing happily, but as the game came to the end, the last group was so worried. The father inspired his kid to stick on and finish the match, while the kid was crying because he knew he must be the last. After the match, the father told his kid that winning was not the most important thing for the match, the first thing was to enjoy the game and finish it, the result was not that important. I agree with the father, the child must be endowed with the consciousness that to enjoy the game is more important than to win. Every match can only have one win, but we can enjoy every match.

曾经我看到一个电视节目，那是关于爸爸和孩子在比赛，他们分成五个组，在进行比赛。一开始，他们比得很开心，但是随着比赛来到结尾，最后的那组显得很着急。爸爸鼓励他的孩子坚持完成比赛，然而孩子却在哭泣，因为他知道他肯定是最后一名。比赛过后，爸爸告诉孩子，对于比赛来说，赢不是最重要的，最重要的是享受比赛，并且完成它，结果也不是那么的重要。我同意那位爸爸的话，孩子必须要有这样的意识，享受比赛比赢得比赛更为重要。每个比赛只有一个赢家，但是我们可以享受每场比赛。

Talking of examinations,I feel that they are one of the important

activities in school life.Since the first day I went to school,I have had to

deal with them almost every day.All through my secondary school days,I have gone

through al kinds of exams,entrance exams,tests,quizzes and so on. I have tasted

the flavour of happiness,sadness and laughter.

Before every exam,there is always a certain time for me to suffer.The world

before me seems to be sad and gloomy.I feel that all my books are

disgusting.During examinations,I am always like a computer.I try hard to squeeze

out every piece of information to answer my questions.A machine has no

feelings,but I am nervous,my heart beats hard.

After the "swesty battle",the world seems to be bright again.A disaster is

over.I become lively again,and begin to discuss every problem with my

classmates.

The bell ring the bell... ! The bell rang for class, this class is a language lesson, I thought to myself, dont know what the teacher the class who can speak the text?

Originally, the teacher in the classroom to tell us a little about "friendship", is about a man named jack Bauer students have difficulty in solving arithmetic word problems, homework often please help, some students will let jack Bauer copy his homework again. Cockroaches think this classmate enough "friends". Some classmates tell jack about problem-solving ideas and steps, only let him think independently finish the homework, he felt that classmate enough "friendship". The teacher finished, lets think about what students help jack Bauer is right? What is true friendship? I wanted to think, to help jack Bauer on topic ideas and steps of classmate is right, because only in this way, small strong in such a problem he would do it, but afterward he could slowly homework independently. And those who put their homework let jack Bauer copy again, it is not good, also not the real "friendship", if you do this, he will slowly form the bad habit of relying on.

Remember once, I was doing, I dont know a word, my deskmate Chen told me that my next time when I meet the word will be read. She often help me, so now I think its a true friendship.

铃铃铃……!上课的铃声敲响了，这堂课是语文课，我心里想，不知道老师这堂课会讲什么课文呢?

原来，老师在课堂上给我们讲了一个关于《友谊》的小短文，是讲一个叫小强的同学在解算术应用题有困难，写作业时常请同学帮助，有的同学就把自己的作业让小强抄一遍。小强认为这样的同学够“朋友”。有的同学只给小强讲讲解题的思路和步骤，让他自己动脑筋独立完成作业，他觉得这样的同学不够“交情”。老师讲完了，让我们想一想哪些同学帮助小强是对的?什么才叫真正的友谊?我想了想，帮助小强讲解题思路和步骤的同学是对的，因为只有这样，小强在遇到这样的难题他就会做出来，以后自己就能慢慢的独立完成作业了。而那些把自己作业让小强抄一遍的同学，这样做是不对的，也不叫真正的“友谊”，如果这样做，他就会慢慢的养成依赖的坏习惯。

记得有一次，我在做题时，我有一个字不认识，我的同桌陈逸飞告诉我，我下次在遇到这个字的时候就会读了。她经常这样帮助我，我觉得这样才叫真正的友谊。

Smoke has something for people in poor health, nicotine.

Nicotine in a cigarette can kill a mouse, 25 g of nicotine in cigarettes can kill a few cows, 40 to 60 mg of pure nicotine can kill a person.

The dangers of nicotine is also quite big, it can cause stomach or other stomach disease; Also can make the person causes heart disease cause rhythm of the heart is not straight; The outbreak of serious still can cause cancer.

Cigarettes are hidden in the invisible killer, around us are all should be vigilant.

According to scientists, the chemical composition of tobacco contains hundreds of complex, most harmful to human body, including tar, nicotine, phenols, alcohols, acids, aldehyde is 40 kinds of toxic and carcinogenic substance. Smoke after the fire, smoke, contains the chemical composition of tobacco in all, at the same time than the tobacco itself and added some harmful substances, such as carbon monoxide, tobacco tar and so on. This is because in addition to the tobacco itself, in the process of cigarette made, to add some cocoa in raw materials, liquorice, sugar, glycerin, such as ethylene glycol, moist, taste fragrance and combustion-supporting material. Although these additive itself is harmless, but changed in the process of combustion. For example, in the back of the rat with cocoa after burning smoke oil, can grow skin tumor. Glycyrrhizic acid in glycyrrhiza after burning, with other ingredients, can generate have carcinogenic polycyclic aromatic hydrocarbons. Sugar increased after combustion with tobacco tar, and the product of sugar after combustion is an important carcinogens in tobacco. Glycerin and glycol after the burning of the material, not only can make smokers bladder cancer, and the acrolein inhibits the trachea and cilia secretion from the lungs, thereby increase the chances of suffering from bronchitis and emphysema, and make people with both became seriously ill.

Smoke harm to people is how great! So we cant smoke. Stop smoking, the benefit of future generations.

烟里有一种对人身体不好的东西——尼古丁。

一枝香烟中的尼古丁可以毒死一只小白鼠，25g的香烟里的尼古丁可 毒死几头牛，40至60毫克纯尼古丁可以毒死一个人。

尼古丁的危害也是相当的大，它可以引起胃痛或其它胃病;还会使人引起心律不正诱发心脏病;严重的还可能引起癌症的爆发。

香烟是隐藏在我们身边的隐形杀手，是大家所应警惕的。

据科学家测定，烟草中含有数百种复杂的化学成分，大部分对人体有害，其中焦油、尼古丁、酚类、醇类、酸类、醛类等40种是有毒和有致癌作用的物质。烟在点燃后，所产生的烟雾，包含了烟草中所有的化学成分，同时比烟草本身又增加了一些有害物质，如一氧化碳和烟焦油等。这是因为除烟草本身外，在制成卷烟的过程中，要在原料中加入一些可可、甘草、糖、甘油、乙二醇等调味、湿润、产香、助燃物质。这些添加剂虽然本身无害，但在燃烧过程中却起了变化。例如，在鼠背涂上可可燃烧后产生的烟油，可长出皮肤瘤。甘草中的甘草酸在燃烧后，与其他成分化合，可生成有致癌作用的多环芳烃。糖与烟草一起燃烧后增加了焦油量，而糖燃烧后的产物是烟中的一个重要致癌物。甘油和乙二醇在燃烧后的物质，不但可能使吸烟者患膀胱癌，而且所产生的丙烯醛可抑制气管和纤毛分泌物从肺内排出，从而增加患气管炎和肺气肿的机会，并使患有这两种病的人病情加重。

烟对人的危害是多么大啊!所以我们不能吸烟。杜绝吸烟，造福后人。

In,Dumbledore said to

Harry,Youth,live with more fun.Youth,a large amount of wealth.Youth days,spend

with friends,spend with joys.

Youth,some spend it,some treasure it,but I show respect to it.Not too much

fun with youth for me, niether do i feel happy or sad.I am just puzzled.Where a

youth can create a great many things?Or just go down,falling into the vally of

disapponitment?Finally,I find it just a fun for being a youth.Dont think too

many things about the past childhood,or the coming unknown life.Just for you,for

me,enjoy the fun in our youth,then be a tough man step-by-step go.