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其他类英语作文:雾霾天气(精选20篇)

夏天是一个炎热的季节,也是一个充满色彩的美丽季节。下面是开学吧为大家整理的美丽的夏天英语作文,希望你喜欢。

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诚实英语作文高3

全文共 906 字

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With our world developing,more and more people neglect how to conduct

theirselves.What is the most common reflection of this phenomenon is

dishonesty,which is now seriously influencing relationship between people.

Being dishonest can do harm not only to others but also to

ourselves,thus,we must get aware of the importance of boycoting it.Take the case

of the Sanlu powder for example.After drinking Sanlu fake powder,lots of babies

got sick and had big heads,nevertheless,their bodies still thin.People hateful

too much,the Sanlu corporation expectedly get punished and never have choice to

make up their faults.

When it comes to the significances of being honest,I consider,we will make

good relationship bewteen others,such as in the school ,in the busineand in the

society.Furthermore,only if we are honest to others can others become friendly

to us.Therefore,cultivate a virtue of honesty and we will get better.

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篇1:雾霾英语

全文共 1213 字

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Today, we have a health class. The main content is the harm of haze.

We watched a movie called "the harm of haze", which mainly explained how

terrible haze is.

Haze passed through our bodies, just like games. It comes to the blood

vessel first, let the partners block the blood vessel together, so our blood

pressure will rise; it also has a partner who is less than 0.5cm and has a knife

in both hands, and can directly pass through the blood vessel; it comes to the

internal organs, which are like a tree, and there is white fat like a giant,

which can directly eat the dirty things. However, we have iron ore in our body.

If we eat too much white fat, we will die. This is a blood station! So the

resistance of man has decreased. Its finally at the center - the heart, because

we just blocked your blood vessels, so your heart will cause myocardial

ischemia. "Tremble! Human beings! Im in every breath of yours, "cried haze.

Haze has a great influence on us. With haze, we cant play in the

playground, cant have physical education class, and we need to wear a little

annoying mask. Therefore, we should protect the environment and nature. As long

as you start little by little, you will be able to achieve the results you

want.

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篇2:讨厌的雾霾天气作文

全文共 637 字

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“天啊!天啊!”猜猜怎么了?原来今天是讨厌天气

天还闷闷亮,妈妈就叫我起床。我揉了揉眼,伸了一个大懒腰,穿上衣服,下了床。我来到窗前,本想看一看风景,可在我朦胧的双眼出现了这样的画面:下方白茫茫,只能隐隐约约地看见几棵树。我疑惑极了,于是问妈妈:“妈妈,这是怎么了?”

“听天气预报说,今天好像是雾霾天气!”妈妈来到我的面前,也向窗外望了望。“什么,你说今天是雾霾天气?”我下了一大跳。

洗完脸,我和妈妈来到楼下,打开大门,我吸了一口空气。啊!以往那新鲜空气跑到哪里去了?怎么全是些吸进去令人难受的空气了呢?我一边自言自语道,一边向马路跑去,想去看看那边的情况。来到马路边,啊!这里的空气更加糟糕,我不禁用手捂住了嘴,皱起了眉头。现在,再把目光转向马路中心,虽然雾霾阻挡不了车辆行驶,但以往颜色各不相同的车子,都好像穿上了灰外衣,看过去成了灰蒙蒙的一片。再看看周围,整个世界被笼罩在烟雾中:房子顶上有,河面上有,田野上也有——看起来好像来到了仙境,其实是害人的鬼地方。道路两旁行人也多加了一样东西——口罩,雪白的口罩把行人的大半个脸给遮住了,我想戴着口罩肯定很不舒服,但大家又能怎么办呢?我又抬起头,要看蓝天白云散散心,可没想到天空已从蔚蓝变成了灰白,云朵从洁白变成了灰暗。看着这一切,我下定决心以后要:多种花草树木,绿化我们的家园,不乱扔垃圾,劝爸妈少开一点车|······

啊!我多么希望老天快快下雨,让雾霾赶紧离去,还我们一个洁净、清新的美好家园。

[讨厌的雾霾天气作文

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篇3:共享单车英语

全文共 766 字

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The shared bikes like Mobike and Ofobring great convenience to people. You

needn’t lock them by simply using your smart phone. They can take you where the

subway and bus don’t go. And they can be left anywhere in public for the next

user.

However, bad things happen. Some people damage the QR code on the bike, or

use their own lock, which causes trouble toother users.

In my opinion, it’s difficult to turn these people’s ideas in a short time.

Therefore, bike-sharing companies like Mobike and Ofo need to do something. For

example, those who damage the bike should pay for their actions. Also, because

people use their real name to registeras a user, it’s a good way to connect to

one’spersonal credit.

In the end, what I want to say is to take good care of public services.

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篇4:有关天气的英语谚语大全

全文共 1202 字

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高考在即,语文迷特地为大家整理了关于天气谚语,供大家写作文的时候参考。

for a morning rain leave not your trip.

不要因为早晨下了一场雨就不去旅行。

when dew is on the grass,rain will never come to pass.

"草上露珠闪,告别下雨天

fish bite best before a rain.

大鱼吃小鱼,天空要下鱼

when ladybugs swarm,expect a day that’s warm.

蚂蚁搬家,天将雨

if bees stay at home,rain will soon come.if they fiy away ,fine will be the day

蜜蜂迟归,雨来风吹

on cloud nine

飘飘然如上九重天

halo around the sun or moon ,rain or snowsoon.

日晕三更雨,月晕午时风

when a halo rings around the moon or sun, rain is approaching on the run.

太阳月亮镶银边,老天马上要下雨

red sky at night, sailor’s delight.red sky in the morning, sailor’s warning.

"晚上天色红,水手乐呵呵;早晨天色红,水手急煞煞。

save for a rainy day

未雨绸缪

when the stars begin to huddle ,the earth will soon become a puddle.

月明星稀

mountains in the morning. fountains in the evening.

"早晨天上积雨云, 晚上地下降暴雨

red sky at night,sailor’sdelight.red sky in the morning,sailor take waring.

早霞不出门,晚霞行千里

和风有关的谚语:

sail close to the wind

冒险

例句:If you believe what he said, you are sailing close to the wind。

know which way the wind blows

了解情况

例句:He never tells his thoughts until he knows which way the wind blows。

和雪有关的谚语:

be snowed down

工作太多做不过来

例句:Ive been snowed down by my work!

white as snow

纯洁无辜

例句:The accused didnt comitt the murder,he is as white as snow。

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篇5:关于成功的因素的英语

全文共 532 字

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What is the definition of success? I believe different people will have

different opinions about it. If anyone asks me what is success for me, I will

tell him progress is success for me. I can have small goal or great aim in my

whole life. If the goal what I set is too large for me, I will not taste the

feeling of success. Or I always set small goals, so I will feel success all the

time, which may make me become autophilia and without ambitions. Therefore, I

think if I can be better than yesterday or last time, then I am successful.

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篇6:生活英语作文初中

全文共 976 字

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Time spent at a university is a most worthwhile period in a young persons

life. This is a time when a student begins to form his or her ideas about life

in general. Attending classes and studying in the library keep a student busy

and provide him or her with access to valuable information, adding to his or her

knowledge base.

Campus life can also be rich and colorful. Most universities offer a

variety of extracurricular activities such as sports events, contests, and other

social gatherings, enabling the students to experience relief from study and

homework. Students often form lifelong friendships through the varied

experiences of university life.

During the time a student spends at university, he not only develops his

intellectual abilites,he also develops social skills as well as knowledge and

wisdom necessary for choosing a future career. By learning how to balance

intense study and recreation, a student will be well prepared for the challenges

of future responsibilities.

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篇7:以成功为话题的高一英语

全文共 2150 字

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When it comes to success, different people have different opinions about

what makes it come true. Some people regard hard-working as an essential quality

to success while others believe being clever would lead to success. From my

point of view, I think perseverance and hard-working are indispensable for those

who want to make an achievement.

Firstly, perseverance let people step closely towards success. Most people

want to make a big difference to prove their value. People who set their goal

and keep moving would make their dream come true. However, there are some people

who set their goal but they stop at the difficulty would fail in the end. I

think the difference between success and failure is perseverance. If we have

perseverance, even if we are not clever, we will make a great difference, but if

we not, we are doomed to lose. As we all know, Edison is a great inventor in the

world. However, before he invented the bulb, he kept trying for tens of

thousands of times to find a suitable wire. Let us imagine, if he gave up at the

999th, then how he couldn’t become so successful. So, I strongly believe that

perseverance produces success.

Secondly, there is also a kind of people who are born with cleverness, I

think they are lucky. Nevertheless, if they don’t make a hard work on their way

to their goal, they, absolutely, will become loser. Whether we are gifted for

intelligent, we must be hard-working so as to success. I regard hard-working as

an efficient approach to be successful because I believe ‘pains and gains’. As

for those who do not make great efforts on work, failure follows. In old times,

there is a clever boy who can make excellent poem when he can talk. When his

father found the little child’s cleverness, he just let the child make poems to

show around while never let the boy learned anything. When the boy grew up,

people forgot him because he lost the ability to compose poems and became

ordinary as others. From this matter, we can see that only by hard-working can

we get knowledge and make a good future.

Anyway, I think perseverance and hard-working are both important in our way

to success for they enhance us and produce success.

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篇8:初一暑假英语

全文共 2037 字

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what! The summer vacation goes by so fast, fifty days will pass in a blink

of an eye. During this summer vacation, I spent most of the time playing

basketball. Sometimes I go swimming with my friends. Sometimes play with small

cards. If I was alone, I would ride a bicycle for a ride around, or watch TV, or

go online to find a classmate I miss, chatting, bickering, and solving the pain

of missing. There are many, many programs to play, but my favorite is still

playing basketball.

During this summer vacation, my mother signed me up for a basketball class,

so that I could keep fit and keep my body in good shape. At the same time, I

also want to find my own fun and hobbies. Make this summer a little more

fulfilling.

When I first started learning, I could not learn the basic skills given by

the coach. Even sometimes the coach has already taught me hands-on, and I still

dont understand. Just when I lost my confidence and was about to give up, the

coach came to me and said, "It doesnt matter, whoever learns skills will not go

through a little setback and will be smooth sailing? Who has an amazing talent,

one step to the sky? Dont you rely on the accumulation of bit by bit to make

the same movement well? As long as there is perseverance, the iron pillar will

be ground into a needle!"

After listening to what the coach said, I was at a loss. Begin to practice

hard: I practice pitching on the court while the coach calls everyone to rest.

The coach said that when school was over, I practiced three-step layups on the

court and didnt leave until my family came to tell me. I also often share my

experience with my classmates...

As the saying goes, hard work pays off, and my hard work is not in vain -

now, my basketball skills have improved by leaps and bounds, and I dont only

know a little bit like before. And my physique has also improved, I wont run

out of breath after running 400 meters like before - playing basketball is happy

and healthy!

This summer vacation is happy and fulfilling, and I look forward to the

next summer vacation coming soon!

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篇9:关于父亲节英语

全文共 291 字

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My father is the best person in the world. He cares about me so much. No

matter how busy he is, he always makes out some time to play with me. Now

Father’s Day is coming soon. I want to give him a surprise. So from now on, I

need to save some money. When the time is coming, I can surprise him.

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篇10:介绍教师节的英语

全文共 769 字

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Teachers Day

The Teachers Day will come soon.At first,I want to extend my greeting and best wishes to my dear teachers.

I still remember the year when I failed the collage entrance exmination.Iwas feeling lost,and no idea about what my life is going to be.My teachet came to me,and she said she understand how I felt inside now.She also told me its very common that students who are like me will go though a hard time. She told me that failure was a part of life, which was not the end but a new beginning. And she encouraged me to go back to the school to start a new. I was convinced in the end and decided to give another try.

Now Ive graduated from collage and got a very good job.I know all my success owns to my kind teacher. Ill work harder and never give up again.

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篇11:有关圣诞节英语作文高中

全文共 1177 字

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Most westerners always celebrate Christmas Day as their major festival, in

order to memorialize Jesus. During that time, they always have several days off,

so they can enjoy this festival with all their hearts. The children often get

together with their friends. The adults are busy with decorating their houses.

They also send the postcards with their best wishes to each other. In the

streets, there are so many Fathers Christmas sending presents to the passers-by.

And everything is on a discount in the supermarkets. Thus the supermarkets are

the busiest places.

In the evening, the families usually have pudding, sandwiches, apple pies

and some other desserts for dinner. After supper, the families always sing and

dance around the Christmas tree. Sometimes, they also go to church. Before going

to bed, the children often hang up their stockings beside their bed, so that

Father Christmas will fill them with presents. It is said that Father Christmas

always drives a deer to the human world and entering into each house from the

chimney. Now the children no longer believe in Father Christmas, but they still

hang up their stockings, because their parents will fill them with presents.

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篇12:关于戒烟英语

全文共 759 字

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At present, many teenagers smoke. I dont think its a good phenomenon. It

must be stopped, for smoking is harmful in many ways.

First, smoking is bad for our health. As we start smoking, its so

difficult to give up, because the tobacco contains a drug called nicotine, which

can get us into the habit of smoking. When we go without nicotine, our bodies

will feel sick.

Second, smoking is so dangerous. When we smoke in bed, we may kill

ourselves as well as burn down our houses, for burning cigarette ends may cause

a big fire. And if we threw the cigarette ends anywhere, it would also cause a

fire disaster.

Furthermore, once we smoke in public, we may make other people feel

uncomfortable as well.

Accordingly, for the sake of your and others’ health, please dont

smoke.

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篇13:初中英语感恩母亲

全文共 844 字

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Orginate in America in the Mothers Festival. May 9,1906, American consuming

city Jia-Wei the mother misfortune of silk dies , her grief extremely. Avoid

Japan in annual mother death anniversary, Miss An Na organizes catch up the

campaign of Sai mother, encourage other person to also express the gratitude for

own loving mother with similar way.

Hereafter, she convinces people everywhere and establishes the Mothers

Festival to the appeal of all sectors of society and call. Her appeal gets warm

response.

Through draft resolution, on May 10,1913, American Senate and House of

Representatives signs by president Wilson second that announces and decides each

years May for Sunday, is the Mothers Festival.

This measure arouses world countries, is imitated one after another,

install to 1948 Na pass away , 43 countries have established the Mothers

Festival.

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篇14:2024关于雾霾的英语作文精选

全文共 1633 字

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Just go out, find day yellow, is wrong! Mother said; "It seems to be under the storm!"

Walk, feel the chest is very stuffy, look at things like float up, dizzy. The dirt and dust is in the sky, with a trace of fear. The sky is gray, the air is damp, give a person a kind of depressed feeling.

The next day on the language class, the teacher let us discuss the haze weather yesterday. Some students say its caused by some farmers burn weeds, some classmates say environmental contamination caused by... As for me, I think should also be caused by environmental pollution. In the end, or a teacher for us to solve the mystery. It turns out that this kind of weather because of environmental pollution and farmers burn formed by the union of weeds, but the teacher say again: "farmers burn weeds are merely a catalyst, the main or we cause environmental pollution." In addition, the teacher also adds some knowledge to us, let us say again that peace yesterday always have to differ? Just in the afternoon, I found some cars open headlight. XiaoYao found usually go to the bathroom in the morning you can see it dont need to turn on the light, and yesterday dont turn on the light does not see...

Fog haze let me know that this time must be to protect the environment!

刚出门,就发现天黄黄的,太不对劲了!妈妈说;“看来要下暴风雨喽!”

走着走着,就感觉胸口很闷,看东西就像飘起来似的,头晕晕的。天空中飘的不知是泥土还是灰尘,有一丝恐惧。天空灰暗,空气潮湿,给人一种很压抑的感觉。

第二天上语文课时,老师让我们讨论了一下昨天的霾天气。有的同学说是一些农民烧杂草所引起的,有的同学说是环境被污染所造成的……我呢,觉得也应该是污染环境所造成的。最后,还是老师为我们解开了谜团。原来,这种天气是因为污染环境和农民烧杂草结合形成的,但老师又说:“农民烧杂草只是一个催化剂而已,最主要的还是我们污染环境造成的。”另外,老师还向我们补充了一些知识,又让我们说了说昨天和平常有什么不同?我发现刚到下午,有些汽车就开大灯了。肖瑶发现平常早上上厕所不用开灯就能看见,而昨天不开灯就根本看不见……

这次雾霾让我知道了一定要保护环境才行!

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篇15:有关坚持英语初二

全文共 790 字

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Since I was a little child, I was taught that dont give up forever. My

mother told me that teaching me how to walk was a tough task. When I just

learned how to walked, I fell down frequently, but she or my father never helped

me to stand up, because they wanted me to stand up by myself. After fell down

again and again, I finally learned walking. My parents were proud of me. Now,

whenever I meet with a problem or get into trouble, no matter how hard the

situation is, I rarely stop my step, because I have a faith in my mind that the

most beautiful view will come in after the highest hill. If you are sure what

you do, then you just stick to it. Nothing in the world is easy, so we will

always meet challenges in life, but remember one thing that never give up and

sunshine comes after the storm.

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篇16:雾都孤儿英语读后感

全文共 5593 字

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Here I am sitting on a couch alone thinking about what I have just finished reading with tears of sadness filling my eyes and fire of indignation filling my heart which revived my exhausted soul that has already been covered by the cruelty and the selfishness of the secular world for a long time. It is truly what I felt after reading Oliver Twist written by the prominent British author Charles Dickens.

The resonance between me and the book makes me feel not only the kindness and the wickedness of all the characters in the novel but what this aloof society lacks and what I lack deep inside. These supreme resources I’m talking about right now are somewhat different from minerals oil that we usually mention. They’re abstract like feelings and some kinds of spiritual stimulation that all of us desire anxiously from one another —— love and care.

Those charitable figures whom Dickens created in the novel are really what we need in life. They showed love and care to others just as the gentle rain from the sky fell upon the earth which was carved into my heart deeply.

Mr. Brownlow is one such person.

The other day he had one of his elaborate watches stolen by two skilled teenage thieves Artful Dodger and Charley Bates and thought naturally it was Oliver who was an orphan and forced to live with a gang of thieves that had done it because he was the only one near by after the theft had taken place. Being wrathful he caught Oliver and sent him to the police station where the ill-tempered unfair magistrates worked. Fortunately for him Oliver was proved innocent by one onlooker afterwards. With sympathy Mr. Brownlow took the injured poor Oliver to his own home. There Oliver lived freely and gleefully for some months as if he were Mr. Brownlow’s own son. One day however Mr. Brownlow asked Oliver to return some books to the bookseller and to send some money for the new books that he had already collected. The thief Oliver once stayed with kidnapped him. After that he disappeared in Mr. Brownlow’s life. Searching for a while Mr. Brownlow had to believe the fact that he had run away with his money. But dramatically they came across each other again a few years later. Without hesitation Mr. Brownlow took Oliver home for the second time not caring if he had done something evil.

Perhaps most of us would feel confused about Mr. Brownlow’s reaction. But as a matter of fact this is just the lesson we should learn from him. Jesus said in the Bible. “Forgive not seven times but seventy-times seven.” Why is that? Because forgiveness is our ability to remove negative thoughts and neutralize them so our energy may be spent on doing what we came here for. We cannot move forward in our future if past issues cloud our thinking. Stop put Mr. Brownlow into the list of your models. Always give people a second chance no matter what they might have done. That’s also a substantial part of loving and caring others.

Then there are Mrs. Maylie and Rose Oliver’s other benefactors. Maybe the reason they loved and cared Oliver was not because of forgiveness. In my point of view it was trust. They had faith in Oliver when he was considered to be a filthy burglar who tried to break the front door of Maylie’s at midnight. But this wasn’t how these two ladies saw the whole thing. They denied Oliver’s crime immediately and listened attentively to Oliver’s own description of his miserable life. They were deeply touched by Oliver’s strong perseverance and astonishing vitality. Accordingly they remedied Oliver’s body and heart and turned him into a different boy. He began to wear appropriate and clean suits which were tailor-made for him and receive education.

As far as we can see it is trust that helps us all live together without precaution. Sometimes trust can even lead us to miracles which we often expect to come about so why not trust? Trust yourself trust others and you’ll salute miracles every single day.

In the novel though the young Oliver again and again fell for conspiracies of those hideous thieves who tried to torture Oliver’s body and poisoned Oliver’s heart intensely he always lived on and tried hard to seek for his own life. Then I realized what supported him all through were actually beliefs. In most cases what you believe is what you’ll become. Believe that you are unlimited that you can do anything you commit to doing and when you do your accomplishments will know no bounds. You control your beliefs and that is how you ultimately control your life. It’s all dictated by your attitude.

In the final analysis love and care contain numerous forms there are love of forgiveness love of trust etc. but they all come from your beliefs in life. When someone tells you he’s deceived you forgive him anyway when someone tells you what he’s done trust him anyway and when you face adversities while chasing your dreams think about your beliefs then what hinders you will become a piece of cake in no time.

So find out “Olivers” in your life and do as Mr. Brownlow and Mrs. Maylie do: love them and care them which cost nothing but save much. They enrich those who receive without impoverishing those who give. They can be certain smallest words or actions but the memory of them sometimes last forever.

Charles Dickens said:“Love makes the world go around.” These immortal words have inspired and will keep on inspiring us to chant the melody of love and to say the prayer of care forevermore. Let us therefore enjoy life and treat other people lovingly. These principles are the roots and foundations of beliefs supporting this article and our mission together.

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篇17:关于跑步的英语

全文共 672 字

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My favourite sport is running.Every day I always spend half an hour on it.Sometimes I will intive my parents or my friends to join me,and I am really enjoy this sport . Doing exercises is very important for everyone.If you want to do some things good,you must have a atheletic build,and then you can pay all your attention to your work or study with a good health.Running is a good way to keep fit.First,it can make your bonds flexible and keep far away from illness and kinds of pains.Secondly,running can make you become not lazy,and you can go outside,breathe the flesh air,and have an active body and a good mood. So,please do some sports to keep you in a good health.

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篇18:雾霾天气污染引发的思考

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近年来,全国平均年霾日数呈显著增加的趋势,尤其是以工业发展、城市建设更为迅速的中东部地区更为明显。以下是小编给大家整理的天气污染引发思考的内容,欢迎大家查看。

最近一段时间,最引人关注的当属“雾霾”天气。今年入冬的一场超级雾霾席卷大半个中国。104个城市中毒“沦陷”,平均雾霾天创52年之最;许多城市深陷十面“霾”伏。

金华也在前段时间刚经历了一个灰头土脸的周末,本月6日和7日,市气象台连续发布两个霾橙色预警信号,这在我市尚属首次。7日,金华的PM2.5指数一度高达510,超过500微克/立方米,即“爆表”,该天的平均指数达到了482,列全省第一。

出现如此严重的雾霾天,并不是一个城市的过错,是全国大范围的区域性雾霾天气所致。近年来,全国平均年霾日数呈显著增加的趋势,尤其是以工业发展、城市建设更为迅速的中东部地区更为明显。在受雾霾影响的城市,部分地区能见度不足100米,造成了当地的航班停飞、道路封闭,呼吸系统疾病患者明显增加,给我们的生产生活和身心健康带来了严重的影响和危害。

一、雾霾的概念

雾是由大量悬浮在近地面空气中的微小水滴或冰晶组成的气溶胶系统,是近地面层空气中水汽凝结(或凝华)的产物。霾也称灰霾,霾是悬浮在大气中的大量微小尘粒、烟粒或盐粒的集合体。霾使空气浑浊,水平能见度降低到10km以下。根据中国环境监测总站对重点城市灰霾天气监测结果显示,组成霾的粒子极小,颗粒物PM10尤其是PM2.5是霾的最主要组成部分。PM2.5是指大气中直径小于或等于2.5微米的颗粒物,主要来自工业废气、煤炭燃烧、机动车尾气、扬尘以及挥发性有机物等。雾本身不是污染物,但产生雾的大气环境处于比较稳定的状态,空气中的污染物不易向外扩散,造成集聚效应,在低气压、风小的条件下,低层空气中的水汽与霾相结合,形成雾、霾的混合物。

二、防治雾霾的规划思考

雾霾是工业废气、机动车尾气等过度排放物在特定气象环境条件下的产物。解决雾霾的关键是转变经济发展方式、推行节能减排,使用无污染清洁能源。同时,城市大面积雾霾的产生与城市规划布局存在一定的不合理性有关,是对城市规划的前瞻性、科学性、有效性和城市发展的可持续性的检验。城市雾霾促使我们对传统城市规划进行反思,并对未来规划提出新的要求。

针对金华市在城市规划工作中如何做好雾霾的防治工作,仍需结合自身的地理环境和气候特征,从城市结构、空间形态及城市高层建筑布局上开展有针对性的研究,从而为政府决策、城市规划建设提出合理化建议。

(一)、合理规划城市结构,预留控制城市风道

城市通风廊道也叫城市风道,就是在城市建设生态绿色走廊,在城市局部区域打开一个通风口,让郊区的风吹向主城区,增加城市的空气流动性,把大气污染物吹出去,对城市的雾霾会起到一定的缓解作用,还能改善微气候环境,夏天还可以缓解“热岛效应”。从某种意义上说,“城市通风廊道”更多的是一种对城市结构的改造。

构建大尺度的“城市通风廊道”可从三方面着手:

一是构建绿色廊道。在规划布局上,根据城市主导风向设置通风廊道,从远郊及市区打通城市风道,沿城市快速路、公路、铁路、河流等周边规划一定宽度的带状绿地并严格控制其建设行为,从而形成绿地风廊、道路风廊、河流风廊。如市区开展的城市绿道网建设,三江六岸绿化廊道建设等均很好的构建了城市的通风绿廊。

二是建设被誉为城市“绿色项链”的环城林带。在污染物不变的情况下,如果建设城市通风廊道,就可以增加污染物扩散的速度,而环城林带是全年四季360°的绿色廊道,任何风向吹过可形成城市风道。金华特殊的区域盆地位置,常年平均风速偏小,而随着城市高大建筑物越来越多,阻挡了空气运动和城市风道,严重的影响城市通风散热。金华总体规划对城市三环预留了一定宽度的环城林带,但在城市细化建设时,有些地方并没能完整的按要求控制下来,相反在一环、二环周边高楼林立,像大桶一样对主城区形成包围圈,使主城区污染物不易扩散,导致城市空气污染进一步加重。

三是严格控制城市风口,利用六大绿楔形成城市“穿堂风”。利用山体林地、河谷水道等自然条件,通过串联建设并采用建设限高等规划手段,形成开敞的空间和城市大“出气孔”。目前,金华主城区按照城市总体规划的要求大部分生态通风走廊已基本形成,并正在发挥作用,可确保郊外的凉爽空气吹进来,把主城的热空气置换出去。同时,城市发展对土地的强烈需求,导致六大绿楔逐渐吞噬的现象依然存在,得引起我们高度重视。

三者复合建设将产生叠加效益,其整体的生态效益比起单纯的一项都要强。国内城市如杭州、武汉、上海等均已开展了构建“城市风道”的相关研究和建设,国外如德国慕尼黑、英国伦敦等均在城市规划中考虑到了城市风道的问题。

相关的研究及经验表明,“城市风道”的建设,并不是临时设计做出来的,而是有赖于提前谋划,进行空间预留出来的。它也并不需要大拆大建,可以结合旧城改造、结合新区开发、结合具体项目审批、结合我们的公园建设、生态带来打造,有意识地逐渐完成。

(二)、有效组织城市空间,构建城市风道

在高强度开发的城市中打造城市通风走廊,一方面要构建绿色廊道,另一方面在建设过程中要有意识地考虑气候环境特征,譬如道路走向、建筑布局应考虑城市的主导风向,为风留出一条条的通道。

金华近几年高层建筑量突飞猛进且布局无序,阻挡着风道的形成。金华主导风向为东北风,因此需要东西向道路来组织风道,而且最好能贯穿整个城市,否则风到了某一个地方,被建筑物阻挡,就要再向上“翻越”,延缓了去霾、散热的速度。如江北的锦绣金华,沿回溪公园西侧密麻的布置了一排高层建筑,夏天清凉的东北风原本可以长驱直入,经过义乌江还能夹带一些凉润的江风,顺江堤、公园、道路和比较低矮的建筑群,一路向老城区吹去,但随着回溪街锦绣金华成排成片的高层居住的建设,正好阻挡在风向由东往西吹去的行经路线上,导致风速急剧下降,加剧影响了城西片去霾和散热。

在城市不同功能区中,不同土地价值及开发强度,其高层建筑分布的密度及位置等有所差异,对于一些处于可能影响城市风道的城市功能区内,应当进行城市高层建筑的控制和分析,尤其100米以上高层建筑对城市微气候影响较大。因此,针对城市地理环境及气候特征,在城市重要风道及其周边需开展城市空间高度控制研究,如对三江六岸景观带沿岸进行高层建筑点位设置研究,既未雨绸缪地进行空间预留,同时又可控制并塑造城市天际线。例如:武汉市规划部门2005年曾联合华中科技大学,进行了“城市建筑规划布局与气候关系研究”。该研究即前瞻性的考虑城市开发建设与城市气候之间的相互关系,对从空间形态上解决城市热岛效应和雾霾具有较好的指导作用。

(三)、考虑地块建筑布局与风向的关系,顺应城市通道

“在城市规划建设过程中,有意识地营造出一条‘风走廊’,可以缓解雾霾天气的发生,减少热岛效应的产生。”徐匡迪说。

营造“通风廊道”,即需要控制高层建筑的高度和数量,在高楼林立的地方留出“大缺口”,让城市像人一样拥有“出气口”。预留风道,让风裹挟着污染物顺利出城。

在地块建设层面,目前欠缺在建筑布局中对城市微气候影响的考虑,成片高大建筑立项时,也未进行科学的气象论证,缺少对建筑物高度、朝向是否阻挡了城市风道形成的相关分析,使得城市大气难以良性循环运转,导致城市成为一座透风不佳的城堡,风进不来,霾出不去,成为令人窒息的污染“围城”。

由于金华主导风向为东北风,建筑布局的最佳朝向为南偏西15度左右,若考虑气候对建筑的影响关系,有利城市通风的建筑布局应与城市街道存在一定角度,而在地块建设中,任由高层建筑按其南北向布置,将极易堵塞城市风道。因此,急需开展城市高层建筑布局与城市气候的相关研究,预留不同地块高层建筑空间位置,并研究不同用地性质建筑布局形式对城市风道的影响。如居住小区建筑的布置形式上,错位布局优于行列式;点式和条式结合,优于单一平面布局;面风向半围合式也利于形成良好的通风环境。

下一步,建议围绕城市结构、空间形态及城市高层建筑布局等主要做好以下几方面的工作:

1、学习借鉴其他城市的成功经验,尽快开展城市规划与气候关系研究,从城市规划角度提出改善城市微气候环境的措施和对策;

2、尽快启动城市总体规划的实施评估,对城市发展过程中存在的问题及时进行修正,使城市建设更加科学、合理、有序;

3、开展市区绿地系统专项规划修编和绿线规划的编制工作,明确各类绿线的控制范围,并按城市绿线管理办法严格执行;

4、根据城市绿地系统专项规划,加快市区公园、城市绿楔、环城林带的建设,构建以三江六岸绿带为骨架,城市绿楔为通风口,环城林带为360°通风廊道的生态绿地系统。

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