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近两年，我国环境污染日益严重，雾霾成为全社会关注的焦点。环境保护也是考研英语中长热的焦点。英语二的同学请注意，环境污染可能以图表的方式考察，例如要求对各个污染源进行比较。
关键词：
空气污染： air pollution
雾霾：smog
空气质量指数：air quality index
红色预警：red alert
交通限行：restricted automobile traffic
工厂减产或停工：close or reduce production at some factories
写作思路：
1. 环境污染严重，雾霾天增多
2. 为什么会出现雾霾天
3. 如何保护环境，减少雾霾天气的发生
雾霾现象出现的原因：
In the last several decades China undergone an industrial revolution, and this has been fueled by China"s cheap and abundant coal.
过去几十年间，中国经历了工业改革，支柱是中国廉价且储量巨大的煤矿。
factories release the effluent directly into atmosphere without removing the harmful ingredients.
工厂向大气直接排放未经处理的排放物。
措施类：
promote cycling and walking 鼓励骑自行车出行
improve the infrastructure for public transports in many aspects.加强公共交通的基础设施建设。
题目：
雾霾很严重了。环境保护已经成为全球刻不容缓的话题。对于政府及企业来说，重视环保事业，让我们的生存环境变得更好，至关重大。
具体的画面描述：
1)有一只宠物狗正带着口罩。
2 )背景是，严重的雾霾天气。
参考范文：
As is vividly depicted from the above picture，it seems to be astonishing and thought-provoking on second thoughts. The most eye-catching feature in the picture that impresses me profoundly is that incredibly even the pet dog wears a mask to prevent the terrible smog and haze. As a matter of fact, recent years has witnessed a severe air-pollutionphenomenon triggered by automobile gas emission and industrial exhaust, which will definitely bedisastrous to individual survival and personal development.
It goes without saying that the problem of hazy weather should be attached great importance to by the government and the consequences should be taken into profound consideration. To account for the above-mentioned air-pollution phenomenon, a couple of severe reasons should be pointed out. On the one hand , the severely polluted air industrial wastes have been pumped into the air, the lakes and rivers and an increasing number of automobiles crowd into the streets and produce the gas emission. On the other hand, the widespread use of plastic bags and coal burning as well as the nationwide construction dust have been pumped into the air from time to time.
As a matter of fact, the smog and haze not only does harm to the lungs and noses but alsogives rise to horrible traffic accidents. In addition, no issue is as harmful as theenvironmental deterioration, which will be a potential threat to the survival of human beings that we are unwilling to see. Just according to a recent survey made by one Morning News, more than 40 percent of Chinese cities are suffering from the hazy weather per year.
As a result, it is essential that a couple of effective measures should be taken to prevent the environmental pollution. To start with, the local government should take more steps, such as closing the factories which produced too much industrial exhaust, planting more trees and develop more high-tech products so that air quality can be better and the weather can be more agreeable. In addition, the government should severely punish those who destroy the environment intentionally. Last but not least, it is urgent to limit the number of private cars in the urban cities and we should adopt the most cutting-edge technologies with a view to creating more energy substitutes instead of the petroleum. Only by the above-mentioned pragmatic measures can we enjoy better health and live a more comfortable life.
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