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Today we stay at home and not go to class. Do you know why? By the way, it is just because of the fog.

Haze? Nanjing and other places of dust is overmuch, combined with the dust and fog, becomes the haze, inhaled into people get lung disease, asthma and other respiratory diseases.

Recently, pm2.5 is close to the extraordinary, in nanjing today at 3 o 'clock in the morning, pm2.5 has reached 466 micrograms of a cubic meters, entered the serious pollution, pm2.5 is one of the "culprit" haze weather. Not just the pm2.5 exceeds bid badly, pm10 has recently started to crazy, 3 a.m. yesterday, pm10 has reached 579 micrograms of a cubic meters, the nanjing the worst pollution index was about to break! In addition, the sky appeared a "mock sun"! Is too much because floats in the sky. If nanjing on October 1, the sky is blue, so today in nanjing will be gray and a piece of the sky.

Fog not only have an effect on the human body, many planes, ships, cars and so on all can't normal travel. Nanjing lukou airport has 53 flights affected by haze on time boot. Many highways have been closed, the highest visibility on the streets of only 10 meters the following, the car travel is very inconvenient. Hundreds of ships to stay in the Yangtze river in zhenjiang. The influence of the fog's really big ah!

We air pollution index of the middle and lower reaches of the Yangtze river has been more than the north, like tianjin, Beijing, hebei and other provinces, cities have been we left behind. The factory in the north is more, to produce a lot of dust, according to the reason for the northern cities should air pollution is the most "powerful", can be in November to December China's worst air index, almost all is our "occupy" in jiangsu province.

Now that the fog is so terrible, we should also consider what to do! 1, when faced with heavy fog, the first thing to hide the fog haze. Haze days don't go out as far as possible, don't get up early to exercise more. 2, mask is fog out of necessity. Will always wearing surgical masks, but not always wearing a mask, only on the road, a lot of bacteria such as hospital, pm2.5 wear a lot of place, at other times, try to put in my pocket.

This is the fog haze, a great influence on our body, we must learn to prevent it! That is why our school classes.

今天我们同学都留在家里不去上课。你们知道为什么吗?对了，就是因为雾霾。

雾霾是什么呢?南京等地的灰尘过多，而雾跟这些灰尘相结合，就变成了霾，人大量吸入会得肺病、哮喘等呼吸道疾病。

最近，南京的pm2.5接近爆表，到了今天凌晨3点，pm2.5已经达到了466微克一立方米，进入了严重污染，pm2.5是雾霾天气的“罪魁祸首”之一。不仅仅是pm2.5超标严重，pm10最近也开始疯狂起来，昨天凌晨3点，pm10已经达到了579微克一立方米，这项指标就快要破南京最差污染了!而且，天上还出现了一个“幻日”!就是因为天空中的漂浮物过多而形成的。如果说10月1日的南京的天空是湛蓝的，那么今天南京的天空将是灰蒙蒙地一片。

不仅雾霾对人体有影响，许多飞机、船只、汽车等都不能正常出行。南京禄口机场已有53个航班受雾霾影响不能准点开机。许多条高速公路都已经关闭，街头的最高能见度才仅仅10米即以下，这让汽车出行非常不方便。数百只船只停留在长江镇江段。雾霾的影响可真大呀!

我们长江中下游的空气污染指数已经超过了北方，像天津、北京、河北等省、市都已经被我们落在后面。北方的工厂较多，会排出很多的灰尘，按道理来讲北方城市应该空气污染是最“强”的，可11月到12月中国的空气最差指数，几乎全部是我们江苏“占领”的。

既然雾霾这么可怕，我们也应该想想该怎么办吧!1、当遇到浓雾天气，首先要躲雾霾。雾霾天尽量不要出门，更不要早起锻炼。2、口罩是雾天外出的必需品。要常带口罩，但不能常戴口罩，只有在马路上、医院里等病菌很多，pm2.5很多的地方戴，其他时候，尽量放在口袋里。

这就是雾霾，对我们人体影响很大，我们要学会预防它哦!这也就是我们学校为什么停课的原因了。