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关于环境污染的英语主题作文通用三篇 作文高中(汇编20篇)

导语:母爱是迷惘时苦口婆心的规劝;母爱是远行时一声殷切的叮咛;母爱是孤苦无助时慈祥的微笑。下面小编为大家整理的我的母亲作文,欢迎大家参考!

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高中英语满分作文及翻译

全文共 880 字

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Nowadays university graduates have different job outlooks. For most of them, to find a job with satisfactory pay is their most important wish while majority want to be self – employed. However, a certain number of graduates are not in a hurry to hunt for jobs. They are just waiting for better chances. Toward this point of view, some experts warn that it is not wise to be just waiting. They advise that graduates should find a regular, full-time job as quickly as possible so that they can earn money to support themselves and get working experience, which will help to find a better position later. Moreover, it might be more difficult to find a satisfactory job next year.

如今大学毕业生的就业前景不同。对于大部分孩子来说,要找到一个令人满意的支付工作是他们最重要的希望,而多数是希望能够自我 - 就业。但是,一定数量的毕业生不急于寻找就业机会。他们只是在等待更好的机会。对这一观点,一些专家警告说,只是等待这是不明智的。他们提醒毕业生应该找到一个正规,全职工作,以便尽可能快的挣钱来养活自己和获得工作经验,这将有助于找到更好的更高的位置。此外,明年可能更难找到一个称心如意的工作。

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更多相似作文

篇1:如何建设节约型社会环境英语作文

全文共 1226 字

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国家正在提倡"节约社会",你将以"How to build an economized society"为题向21世纪报投稿,文章应包含以下要点,可适当发挥,谈谈自己其他的一些想法或做法.

要点提示:

节电:及时关闭灯,电扇,电脑等;

节水:随手关水龙头,废水利用等;

节能:拒用塑料袋,废物回收等;

自己的见解

注意:1.词数:100左右.短文标题,开头已为你写好,但不计入总词数;

2.内容可适当发挥,注意行文连贯.

How to build an economized society

Our government is aiming to build an "economized society". I think it is every citizens duty to work hard to achieve this goal

Possible version:

How to build an economized society

Our government is aiming to build an "economized society". I think it is every citizens duty to work hard to achieve this goal.

To build an economized society, we must keep the following points in our minds. Firstly,make sure that the lights and the electric fans are turned off when there is no one in the room. Set the room temperature at above 26℃. Remember to turn off the computer when you are not using it. Secondly, try to form the habit of turning off the tap after it is used. Use basins when washing faces or vegetables. Thus the water can be used again to clean toilets or water flowers. Thirdly, it will be good enough to use a basket instead of plastic bags when you go to the market. As we know, a basket can be used many more times.

In a word, we should try our best to build an economized society.

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篇2:哈利波特完美的梦想高中英语作文

全文共 1210 字

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Perfect Dream Harry Potter

Do you know Harry Potter? If you dont, then you are out of date. Many people love Harry Potter, whether children or adults. I love Harry Potter, too. Last week, I went to Nantong to see the movie "Harry Potter and the Goblet of Fire".

It was a wonderful movie. In the movie, Harry is the same age as us and he is more handsome than me. Harrys best friends are Hermione and Ron. The movie tells the story of Harrys Fourth Year at Hogwarts. The Goblet of Five selects him to compete as one of four champions in the Throwizard Tournament, despite the fact that he didnt submit his name. The Tournament is very dangerous so his friends are all worried about him. Hermione and Ron try their best to help Harry to prepare for each task. I think their friendship is unbreakable. Cho Chang, who Harry likes, is a Chinese pretty girl. I liked her but I liked Hermione better because she is very clever.

Its very magical! I love magic as much as Harry does. If I lived in a magic world, I could pick up gigantic things easily, I could go to wherever I liked and I could fly on a broom, I could change my hairstyle of any time, I could.

Its a perfect world and its a perfect dream.

[哈利波特完美梦想高中英语作文

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篇3:英语环境保护类作文

全文共 4248 字

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保护环境也许是大家心中都呼吁的,大家都想生活在好的环境当中。以下是小编整理的英语环境保护类作文,供大家参考,希望能给大家带来帮助。

英语环境保护类作文【1】

WhatCanWeDofortheEnvironment

Hello,everyone.

I’mLiHua.

It’snicetospeakaboutwhatwecandofortheenvironment,andIthinkeachofuscandoalittlebittohelpwiththisproblem.

Thefirstthingwecandoistouseclothbagsinsteadofplasticbagswhenwegoshopping.

Ithelpstoprotecttheenvironment.

Thesecondthingwecandoistoreuse(再利用)theoldtextbooksaspossibleaswecan.

Weshouldalsoneverforgettoturnoffthelightswhenweleavetheclassroomsinordertosaveenergy.

What’smore,itwouldbebetterifwewalkorrideabiketoschool.

Weshouldtryourbesttoreducepollutionandwaste.

Infact,eventhesimplesteverydayactivities(日常活动)canmakearealdifferenceto(对…有影响)theenvironment.

Ibelievewecanmaketheworldabetterplacetolivein.

Thankyouforyourlistening!

Howtoprotecttheenvironment?

Todaythereismoreandmorepollutionandtheenvironmentisbecomingworseandworse.

Sowehavetoknowhowtoprotecttheenvironment.

Herearesomeways.

First,wecanstopdrivingourpersonalcars.

Wecangotoschoolorworkonfootorbybus.

Notonlycanitprotectenvironment,butalsoitisgoodforourhealth.

Second,wearenotsupposedtothrowaroundlitteranywhere.

Instead,weshouldputthemintothedustbin.

Andit’sbesttopickupthelitteronthegroundwhenweseethem.

Third,weshouldsavethepaper,thewater,thefoodandsoon.

Fourth,weshouldprotectthetreesandweshouldplantmoretrees.

Ithinkifeveryonedoessomethingtoprotecttheenvironment,ourworldwillbemuchbetter.

英语环境保护类作文【2】

Dear Jack,

Thank you for your letter asking about our discussion on low carbon lifestyle.

Here is something about it.

We can do a lot in our daily life to achieve the goal of living low carbon life.

First, we’d better turn off lights if possible and spend less time watching TV or surfing the Internet.

Saving water also matters much.

Besides, we should sort out the rubbish, hoping that we might recycle some, which will surely benefit us a great deal.

In addition, we suggest using handkerchiefs instead of tissues so that we can prevent more trees from being cut down.

More importantly, when we go out, walking, riding bikes or taking buses should be our first choice, which contributes to a cleaner world.

(1)关于环境保护(水资源节约)的话题

Our environment is very important for our lives .

We need the fresh air, the clean water and so on .

In the past, there were many trees around us ,the air was fresh and the river was clean.

But now,people cut down many trees.

Air pollution and water polloution are very serious .

The environment around us becomes very terrible .

We should protect our environment.

First, we should plant many trees to keep water.

Second , we can ride a bike or walk to the school and work.

Third , we shouldn’t throw the dirty water into the river .

Fourth, we shouldn’t use the plastic bags.

Finally, we can ask more people to join us.

环保作文典型句子

1.It’s our duty to save wate

2.As we know , water is very important to man, 3.

we can’t live without water.

4.The amount of water which is suitable to drink is less and less.

5.But some people don’t care about it .

6.Many rivers and lakes are seriously polluted.

Something must be done to stop the pollution.

7.Its our duty to protect our environment。

8.It is very important to take care of our environment

9.We should not throw litter onto the ground

10.We should not spit in a public place/ cut down the trees 11.

We should plant more flowers and trees。

12.We must pick up some rubbish and throw it into a dustbin

13.If everyone makes contribution to protecting the environment, the world will become much more beautiful。

15.Trees are very helpful and important for us.

17.We should plant more and more trees in order to live better and more healthy in the future.

It is everyone’s duty to love and protect the environment.

(7)保护我们的城市(Saving Our City)

It is very important to deal with the rubbish in cities.

Rubbish must be thrown away or reused properly.

Or it may cause a lot of problems.

It may pollute the air and water.

People may get ill when they breathe the polluted air or drink the polluted water.

Our city has started to face the problem.

Some rubbish is sorted and sent to a certain place .

Waste gas is cleaned before it goes into the air.

Waste water is also cleaned before it is poured into rivers.

People should be prevented from throwing rubbish everywhere.

We should try our best to take care of our environment and fight against pollution.

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篇4:保护环境的英语作文

全文共 1399 字

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Protection of the Environment

Once man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be unlimited.

Today things are different. The world has become too crowded. We are using up our natural resources,and polluting our environment with dangerous chemicals. If we continue to do this, human life on earth will not survive.

We realize that if too many fish are taken from the sea, there will soon be none left. Yet,with modern fishing methods, more and more fish are caught.We know that if too many trees are cut down, forests will disappear. Yet, we continue to use powerful machines to cut down more and more trees. We see that if rivers are polluted with waste products, we will die. Yet, waste products are

still put into rivers.

We know that if the population continues to rise at the present rate, in a few years, there wont be enough food.What can we do to solve these problems?

If we eat more vegetables and less meat, there will be more food available. Land for crops feeds five times more people than land where animals are kept.

Our natural resources will last longer if we learn to recycie them.

The world population will not rise so quickly if people use modern methods of birth control.

Finally, if we educate people to think about the problems we shall have a better and cleaner planet in the future.

[保护环境英语作文精选

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篇5:融入新环境英语作文

全文共 2119 字

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1. Human beings are dependent on the Earth’s diversity of species. Wild species play a vital role in the maintenance of the planet’s ecological functions, yet every day on the planet 40-100 species become extinct.

2. Human life cannot exist in the absence of complicated interactions of millions of species in biological systems.

3. 50,000 plant an animal species disappear each year due to tropical deforestation, expanding agriculture and human settlement.

4. Human activities impact the environment, including clearing agriculture land; air, land and water pollution; urban and suburban development; and the introduction of invasion or non-native wildlife species. If land and wildlife are poorly managed, human being will risk fragmenting habitat.

5. We are living in the midst of a great chemical experiment, and some serious consequences are becoming apparent to scientist. More than two billion pounds of chemicals are spewed into the air each year. These chemicals are brewing a disastrous stew, resulting in an atmosphere crisis. The greatest consequences of the atmosphere crisis may be global warming and the ozone depletion. If human kind wants to survive well into the next millennium, we must stop this horrible destruction of our own environment.

6. The earth appears to be warming due to the greenhouse effect. Scientists estimate that the average temperature could climb about 2 degrees Celsius in 20 years. This change in the global climate would have disastrous results, including drought, coastal flooding and increased species extinction. And, scientists have discovered a hole in the ozone layer. The ozone layer is the only protection for life on Earth against deadly ultraviolet radiation from the Sun. Once the ozone layer is completely destroyed, all life on Earth will cease to exist, killed by the deadly radiation. The planet will become a barren rock devoid of all life.

7. It allows for an unbelievably large amount of downloads and uploads of information, music,videos and all sorts of other things, as it is the engine of the information superhighway of our Information Era, in witch we live.

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篇6:环境类英语

全文共 1350 字

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Once man did not have to think about the protection of his environment.There were few people on the earth, and natural resources seemed to be unlimited.

Today things are different.The world has become too crowded.We are using up our natural resources,and polluting our environment with dangerous chemicals.If we continue to do this, human life on earth will not survive.

We realize that if too many fish are taken from the sea, there will soon be none left.Yet,with modern fishing methods, more and more fish are caught.We know that if too many trees are cut down, forests will disappear.Yet, we continue to use powerful machines to cut down more and more trees.We see that if rivers are polluted with waste products, we will die.Yet, waste products are still put into rivers.

We know that if the population continues to rise at the present rate, in a few years, there wont be enough food.What can we do to solve these problems?

If we eat more vegetables and less meat, there will be more food available.Land for crops feeds five times more people than land where animals are kept.

Our natural resources will last longer if we learn to recycie them.

The world population will not rise so quickly if people use modern methods of birth control.

Finally, if we educate people to think about the problems we shall have a better and cleaner planet in the future.

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篇7:河南环境污染的作文

全文共 458 字

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2030年的一个清晨,机器保姆叫醒了我,我懒懒地从被窝里爬了出来,穿上衣服,机器人又把我请到洗手间,正当我准备刷牙洗脸时,一滴脏水滴了下来,正好滴在我的身上。 我生气了,抓起一根木棍咚咚咚!上面的裂口更大了,哗!的一声,一大股脏水泼洒下来,淋了我一身,我仿佛洗了一个凉水澡,浑身湿淋淋的。啊!我的衣服!还有我用五百元买的裤子呀!我又生气又伤心的大喊着。机器人看着我这狼狈不堪的样子说:主人,您知道为什么水会这么脏吗?那是因为你们乱丢垃圾,水都被你们污染了,所以才会那么脏的。

我恍然大悟,跑到窗户边一看,啊!太可怕了;外面飞沙走石,河水从清澈见底变成了浑浊无比;水里的鱼都死了,只有一些生命力顽强的水草还勉强活着,但很快就奄奄一息了。田野上到处都是垃圾,枯草,枯树。一副死气沉沉的画面摆在眼前。 我急坏了,赶紧提上包就要走。慢着主人,今天有酸雨,请装备好泡泡防护罩。好吧。我用时尚泡泡机吹出了一个大大的泡泡,我钻到里面去,提上包就去上班了,一路上全是垃圾,真的很恐怖! 真希望人们不要胡乱丢污染了。

[河南环境污染的作文

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篇8:环境作文英语

全文共 620 字

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Good environment can make people feel happy. To improve the environment means to qualify our life . What should we do to improve our environment ?

We should plant more trees . And we should prevent those factories from pouring waste water into rivers , lakes and fields . Whenever we see litter on the ground , we should pick it up and throw it into a dustbin .

Don’t spit in public places . Don’t draw on public walls . It’s our duty to keep our earth clean and tidy.

良好的环境能让人心情舒畅。改善环境,意味着修饰我们的生活。 改善我们的环境,我们应该做些什么呢?

我们应该种更多的树。我们应该防止这些工厂废水浇入河流,湖泊,田野。每当我们看到地上有垃圾,我们应该拿起它,并把它扔进一个垃圾箱。

不要在公共场所随地吐痰。不要在公共墙壁乱画。让我们的地球保持干净和整洁是我们的职责。

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篇9:高中英语参考作文:我的考试经验

全文共 673 字

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高一英语作文 我的考试经验

My Experience In Examination

In my opinion, examinations are one of the important activities in school life. I have gone through all sorts of examinations since my primary school. I have tasted the flavor of happiness and sadness.

Before examinations I always have a hard time and dont know what to do.During examinations I feel nervous and sometimes my mind becomes blank Only after examinations does the world seem to be bright again and am I brimming with vigor. We often complain that our teachers make trouble for us on purpose. But it is not true. The fact is that examinations are just a way to-help us do better in our study.( 110 words)

[高中英语参考作文: 我的考试经验

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篇10:满分高中英语作文

全文共 886 字

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Dear editor,

I’m writing to tell you about the discussion we have had about whether an entrance fee should be charged for parks. 60% of us schoolmates think that an entrance fee do not meet people’s expectations, for a park is considered to be a place where the public can have a good time when they are not busy either at home or at work. If an entrance fee must be paid by the visitors for a park, it will be necessary to build a gate and surrounding walls. In the end a city will take on a bad look. 40% of us schoolmates think that an entrance fee can be accepted, but it must not be too expensive. The money from ticket selling can be used for paying the gardeners in the park and buying some other kinds of flowers and trees.

With regard to myself, I think an entrance fee is useful, for it can be used to protect a park. Do we share the same opinion, dear editor?

Yours truly,

Li Hua

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篇11:环境保护措施英语作文

全文共 1289 字

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To Whom It May Concern,

I am writing to express my opinion about the current policy on the official holidays, such as Spring Festival and Golden Week Holiday. As you might know, some believe it is a good idea to enjoy a week-long break. For one thing, it provides enough time for people to refresh their minds and thus to have better preparations for their future work. For another, it will lead to increased tourism and in turn stimulate the development of the local economy.

Truly, the past decade has witnessed many advantages of the official holidays, but we should never ignore its disadvantages. On the one hand, it may lead to heavy traffic in that a large number of tourists go on traveling during the same Period, thus, it might cause air pollution. On the other hand, some tourists, with no awareness of environmental protection, often drop litter at random so that the scenic spots are polluted and thus it demands a tremendous sum of money to eliminate the pollution.

Considering the current grim situation, it is necessary that the authorities concerned should take immediate measures to eliminate these disadvantages. Only through these efforts can we relieve the traffic pressure and at the same time raise people’s awareness of environmental protection.

Yours sincerely,

Li Ming

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篇12:元宵节高中英语作文

全文共 1706 字

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The 15-Day Celebration of Chinese New Year.

The first day of the Lunar New Year is "the welcoming of the gods of the heavens and earth."Many people abstain from meat on the first day of the new year because it is believed that this will ensure long and happy lives for them.

On the second day, the Chinese pray to their ancestors as well as to all the gods. They are extra kind to dogs and feed them well as it is believed that the second day is the birthday of all dogs.

The third and fourth days are for the sons-in-laws to pay respect to their parents-in-law.

The fifth day is called Po Woo. On that day people stay home to welcome the God of Wealth. No one visits families and friends on the fifth day because it will bring both parties bad luck.

On the sixth to the 10th day, the Chinese visit their relatives and friends freely. They also visit the temples to pray for good fortune and health.

The seventh day of the New Year is the day for farmers to display their produce. These farmers make a drink from seven types of vegetables to celebrate the occasion. The seventh day is also considered the birthday of human beings. Noodles are eaten to promote longevity and raw fish for success.

On the eighth day the Fujian people have another family reunion dinner, and at midnight they pray to Tian Gong, the God of Heaven.

The ninth day is to make offerings to the Jade Emperor.

The 10th through the 12th are days that friends and relatives should be invited for dinner. After so much rich food, on the 13th day you should have simple rice congee and mustard greens (choi sum) to cleanse the system.

The 14th day should be for preparations to celebrate the Lantern Festival which is to be held on the 15th night.

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篇13:保护环境初中英语作文

全文共 487 字

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How to protect the environment

Good environment can make people feel happy and fit . To improve the environment means to improve our life.

We should plant more trees and flowers around us . We shouldn’t cut them down . We should stop factories from pouring waste water into the river and waste gas into the air.

Whenever we see litter on the ground , we should pick it up and throw it into dusbins. Never spit in public. Don’t draw on public walls. It’s our duty to protect the environment.

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篇14:高中英语满分作文及翻译

全文共 1425 字

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When asked about their opinion of career and family, people always respond differently. Some people deem it more important to pursue their career, while there are always other people who argue that family should be the number one in one’s life.

It goes without any question that career plays a key role in our life. In the very first place, career can give us an aim to live on. Without career, much of our living time will be certainly wasted. What’s more, career can provide us with a means to live on. Most of the people earn their income from a job. On the other hand, family is also an indispensable part of life, as many people will admit. Family is always regarded as a place where we can escape from troubles in life. In addition, we can obtain a sense of belonging to from family. Without it, anyone will feel lonely and desperate.

In my opinion, career and family are not in opposition to each other. Rather, they can enhance each other so that one’s life can become better and better. Therefore, it’s not a choice between right and wrong, but one between ideal and practical.

在谈到自己的事业和家庭的意见要求,人总是有不同的反应。有些人认为这更重要的是追求自己的事业,而总有那么谁认为家庭应该是一个人的生活的人数1人。

毫无疑问,任何事业在我们生活中起着关键作用。在第一个地方,可以给我们一个职业生涯的目标是生活。没有职业生涯中,大部分时间我们的生活一定会被浪费。更重要的是,职业生涯可以提供一种手段,对我们的生活。大多数人从工作中赚取的收入。另一方面,家庭也是生活中不可缺少的一部分,因为很多人会承认。家庭一直被认为是一个地方,我们可以摆脱生活中的麻烦。此外,我们可以得到一个属于家庭的感觉。没有它,人会感到孤独和绝望。

在我看来,职业和家庭是不反对对方。相反,它们可以加强彼此,使自己的生活能够越来越好。因此,它不是对与错之间的选择,但理想和现实之间的一个。

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篇15:环境变化英语作文

全文共 896 字

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What’s more, we should realize that only from our planet can we obtain our sheltering, food, cloth and so forth.

Over the past years, floods, droughts, landslides, and dust-storms have frequented our planet, the only habitat of human beings. Several days ago, tsunami(海啸) has swept the Southeast Asia, which has caused enormous damage. All these have sounded an alarm to human beings.

The destruction which is caused by human beings has aroused people’s concern all over the world. If we pay no heed to the present destructive human activities, our planet will become of tomb instead of cozy home. What’s more, we should realize that only from our planet can we obtain our sheltering, food, cloth and so forth.

Counter-measures must be taken to curb the destruction caused by human beings. Most importantly, laws must be established to punish those who are involved in destructive conducts.

[环境变化英语作文

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篇16:环境污染原因环境污染的根源

全文共 2362 字

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在十年前的中国,大气污染问题对于普通民众来说可能是个比较飘渺的话题。正如空气本身的性质一样,看不见摸不着却无处不在。而专家学者们则主要关注的是对于工业生产,燃煤发电所产生的硫氧化物的处理和汽车尾气中氮氧化物的处理。十年时间飞逝,随着中国经济的迅速发展,人们生活水平的不断提高,人们开始关注生活的质量问题。与其同时越发严重的正是中国以牺牲环境为代价发展经济所带来的环境问题,其中大气污染问题尤其明显。这几年来关于温室气体和温室效应的话题被讨论得沸沸扬扬,专家们各有其立场,但对于普通百姓来说,全球变暖问题似乎仍很遥远。对于温室气体所带来的全球变暖,海平面上升,冰川融化,动植物灭亡的问题,人们大多数是在电视新闻或报刊杂志上看到,恶劣天气的频发也并不是发生在世界每个角落。相比于温室气体所带的大气污染问题,人们开始关注更多的便是最近发生在北京,广州,武汉等多地的灰霾问题。尤其是在北京持续很久的灰霾严重影响了当地人们的日常生活和身体健康,更是引起了广大专家学者和普通民众的高度关注。而其实对于灰霾现象,国外专家学者很多年前便开始研究。

那么何为灰霾?灰霾是导致近地面大气浑浊的多种空气污染物的混合体。构成灰霾的主要污染物是硝酸盐、硫酸盐、有机碳、元素碳、等固体细颗粒物(PM2.5)和臭氧()、二氧化氮()、二氧化硫()、挥发性有机物()等气态污染物。灰霾往往与天然污染源的排放和二次污染污染物的形成有关,还与一定的气象条件和地形有关。我们现在最关注的同时也最难解决的室外污染物之一是可吸入颗粒物。可吸入颗粒物被分类为两种,直径小于2.5微米的颗粒物(PM2.5)和直径小于10微米的颗粒物(PM10)。虽然两种形式的颗粒物都对人类健康有极大的危害,PM2.5被普遍认为是更危险的,因为它的体积小,大约只有人类头发宽度的1/30。人们在呼吸时,PM2.5可以进入人类肺组织深处,甚至进入血液,造成严重的健康问题。同时更小的颗粒物在大气中可以有较长的停留时间。因此,PM2.5可以传播的更远,停留在空气的时间越长,影响更大的人口。PM2.5和PM10的主要来源包括机动车,电厂和其他工业源,以及生物质的燃烧。其中一个主要的来源是柴油为动力的车辆。这些污染源相结合,可以在城市或农村地区天空一片阴霾,而且往往发生在下午时段。

对于容易形成灰霾的城市,除了城市当地工业污染,汽车尾气的影响以外,特定的地形导致污染物的难以扩散也是灰霾形成的主要原因,像美国的洛杉矶,还有前面提到的受灰霾影响的北京和武汉都受到了地形的影响。洛杉矶市三面被群山包围,当地空气干燥,白天阳光充足。到了晚上,地表面冷却很快。地面附近的空气变冷,而上层空气都比较热,形成逆温。北京市位于华北平原的西北边缘,背靠太行山余脉和燕山山脉,面对辽阔的华北平原,东南距渤海约150公里, 地处暖温带半湿润地区,气候属于暖温带半湿润大陆性季风气候,四季分明,春季多风和沙尘,夏季炎热多雨,秋季晴朗干燥,冬季寒冷且大风猛烈。武汉市则居于内陆、距海洋远,周围地形如盆地,集热容易散热难,河湖多、晚上水汽多,城市热岛效应和伏旱时副高控制明显。通过比较以上3个城市的情况可以发现它们都是较大的工业城市,而且城市海拔较低,周围至少有一面是高地,都分布在低于南北纬50度的地方。这些地区夏季阳光明媚,天气温暖干燥。在城市的盆地地区,逆温现象十分普遍。夏季的阳光使地面温度升高,城市街道和建筑物迅速升温,与炎热的物体表面接触的空气温度升高。通过对流空气向上运动,但它却不能穿透逆温层,因为上面的空气温度更暖且密度更小。空气聚集,但连续的对流形成了垂直的循环,使空气完全混合在一起。从建筑物和汽车废气释放出的气体和颗粒也都聚集在逆温层下,通过对流把聚集的空气彻底混合。这样导致污染物无法快速扩散而聚集,大大增加了当地的污染物浓度。

城市内部灰霾的形成也同样受到了这种类似地形的影响,学者称它为街谷模型。随着城市化的加速,城市及城市周边的自然生态系统逐渐被人工生态系统取代,取而代之的是钢筋混凝土浇筑的高楼与马路,很容易形成城市街道峡谷。这种城市街道峡谷是指两侧有连续,高大建筑物的狭长城市街道空间。在这种地形下,上层大气在进入城市时,风速迅速降低并产生特殊的湍流,使街谷内的流场完全不同于上层大气。而气流对污染物具有显著的运输、稀释、和扩散作用,因此,对城市街谷内污染物的浓度、分布有着很大影响。北京的灰霾现象正是因为污染物积聚难以扩散而导致北京的灰霾持续了如此之久。有相关专家的研究发现,除了通过控制排放源,增大扩散和增加沉积率来降低大气中污染颗粒物的浓度以外,地面的性质也影响着颗粒物的浓度。有研究表明植被对城市空气质量能有接近5%的提高。在城市,尤其是在城市街谷地带种植植被能通过增加沉积作用而降低60%的可吸入颗粒物(PM)浓度和40%的二氧化氮(NO2)浓度。因此,通过对植被的合理利用能过创造一个有效的城市污染过滤膜,对密集城市地带空气质量的提高有着快速有效并且持续性的影响。

灰霾问题不是一个暂时性的问题,相反它是一个长久的问题,从它如何形成,加剧到我们如何解决治理并消除都需要一段很长的时间。

灰霾现象,它只是地球环境污染的一个缩影。我们更应该探究它的根源问题,什么才是它形成的根源,什么才是它加剧的根源。我们没法通过改变天然的气候和地形来解决城市灰霾问题,但我们可以通过减少排放源,通过增加植被,加强城市绿化来阻止灰霾的加剧。人类的不断进步使得人们在追求高科技的同时却忘记了自然本身的无穷力量。越来越高的大楼,越来越发达便利的交通,相反的却是城市越来越差的生活环境。在灰色的钢筋水泥世界里生活久了,人们是否会怀念那晴朗的蓝天,向往呼吸新鲜的空气和在那充满生机的绿色大自然世界里生活。

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篇17:汽车污染英语作文

全文共 555 字

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In general, there are two way of traveling, private cars and public transportation.

Chinese people should regard public transportation as their first traveling opinion.

First, there are so many people living in this countries that make it so crowded.

If each chinese people own a car, there will be far more traffic jams and accidents, which increase you impatience.

Moreover, there will be far more pollution resulted from cars. Once a car started, it release huge amount of dirty gas and heat, which lead to great pollution and result in green house effect.

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篇18:孝道为主题的高中作文

全文共 965 字

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古人云:滴水之恩,当涌泉相报。所以,心中有孝,才能感悟充满孝心的世界,心存感恩,才能体验生活给予我们的一切;孝心——不一定非得是那种惊天地、泣鬼神的大事,它是一种发自内心的感激之心;从我出生以来,每时每刻都在父母无微不至的关心和爱护中,同时,我也学会了关爱,做有孝心的孩子。

一天,我放学回家,刚进门,就听见妈妈在呻吟,咦?妈妈怎么没去上班?我感觉不妙,奔进卧室,只见妈妈脸色苍白地躺在床上,此刻,我眼睛充满泪花,妈妈微笑着说:“没事,先做作业吧”,“妈,怎么会没事呀,吃药没有?”,“待会吃”我学着平时妈妈的样子,用手摸妈妈的额头,啊!好烫呀!我非常果断的说:“不行,让我来吧!”可是,我的脑海一片空白,该怎么办呢?突然,我想到以前我发烧的情景,于是,我跑到洗手间,用水把毛巾浸湿,拧干放在妈妈的额头上,并把温度计放在妈妈的腋下,忙完一切,我坐在床边问妈妈病情,妈把妈撑起笑着说:“好多了,去学习吧,”但是,此刻我心里涌起一股力量和责任,必须坚守在妈妈的身边。

在等待漫长的十分后,我一看体温计,妈呀!三十九度!我赶紧在药箱里翻出几瓶退烧药,认真地看着说明书,上面写着“饭后服用”,于是我决定先给妈妈做饭。妈妈曾在我发烧是,给我做了面汤,并告诉我,发烧喝面汤比较好。好!就决定做面汤,并在汤里下了一个荷包蛋,面汤的香味扑鼻而来,这时,我的肚子开始抗议了,但我忍住饥饿把面汤端到妈妈面前对妈妈说“妈,先喝碗面汤吧。”妈妈激动的点点头,我看了鼻子一酸,心里十分难过,愧疚,我知道,这是由于我平时不懂得关心孝敬而这次让妈妈十分感动。以前把妈妈的爱当作是理所当然的,想想看,我真不应该。我默默的想着。轻轻地舀了一勺汤,用嘴轻轻地吹了几下,感觉不烫时,才喂给妈妈喝。妈妈平时就是这样照顾我的。妈妈服了药睡下后,我一直守在妈妈的身边,给妈妈换毛巾。渐渐的妈妈的烧退了,我这才想起作业还没写,便赶紧去写作业……

第二天我一早起来,就来到妈妈的屋里,问她怎么样了。她说好了,她和爸爸不停地夸我:“我们的孩子长大了,回照顾妈妈了,真是个有孝心的孩子。”我听了心里比吃了蜜还甜。

“孝”让我真切的体会到亲情的温暖,奉献的伟大。同时,我也了解“孝”的真正含义——其实就是发自内心的关爱!

让“孝”串连我们的生活,让我们的世界永远充满真情!

[孝道主题高中作文

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篇19:英语作文保护环境60字

全文共 450 字

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Good environment can make people feel happy and fit .To improve the environment means to improve our life.

We should plant more trees and flowers around us .We shouldn’t cut them down .We should stop factories from pouring waste water into the river and waste gas into the air.

Whenever we see litter on the ground ,we should pick it up and throw it into dusbins.Never spit in public.Don’t draw on public walls.It’s our duty to protect the environment.

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篇20:介绍城市环境英语citylife836字

全文共 1020 字

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Do you want to live in the city or the country?

I like to live in the country that the sun rises in the morning with the first golden light & the first sound from the cock.. All the animals & plants begin their life from this moment on and some of the animals begin their sleeping the new day. This is a very beautiful beginning in the world that you just can see all these in the country not in the city.

And for people , the people in the country are kind although they are ungrace-ful .that is not important that you will feel what is the realest in the friendship of people.

Are people kinder in the city or the country?

The people live in the country is kinder than the people live in the city . this is so sure that I just feel all this from my grandparents . My grandpatents both are country people. Their family is poor that they even do not have more money after they finish all their meals.but my mother was so so interested in studying. My grandparents got five children & gave the choice to study to allof them .

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