We all know that clean air is very important to good health. Wherever we go and whatever we do, we are always surrounded by a sea of gases that we call air. Sandstorms and the dust and gases from volcanoes pollute the earth's atmosphere naturally. But the most serious kind of air pollution comes from people.

Our cities have many factories, which we need to make food, clothing and other things. Every year these factories pour millions upon millions of tons of smog into air. Power stations and houses that burn coal add greatly to air pollution. Besides, there are more cars in cities now. They are pumping huge amounts of waste gases into the atmosphere, causing disease and even death. China is currently the world's second-largest emitter of greenhouse gases. The air pollution-related illness already eats into 2-3 percent of gross domestic product.

There are no simple solutions to air pollution, but people could reduce air pollution by saving energy and reducing harmful emissions from vehicle exhausts and power stations. Factory chimneys can be fitted with devices to cut down air pollution. Wu can design and develop clean cars and clean fuels. If better pubic transport and cycle lanes were available in towns and cities, people would be less likely to use their cars, reducing the overall amount of pollution.

Smoking cigarettes adds to the general levels of air pollution as well as damaging our health. According to a recent survey, four million people die each year from diseases linked to smoking. No-smoking areas cut down on this pollution and save non-smokers breathing in other people's cigarette smoke.

But that's not enough. We must all try our best to prevent air pollution so as to save our city and our living place.  We must keep on fighting until we find ways to do away with air pollution. We are sure that we'll win the battle.

Goodbye, air pollution!

空气污染

我们都知道，洁净的空气对健康非常重要。无论去哪里或者做什么， 我们都被空气的海洋包围着。沙尘暴和火山爆发喷出的尘埃和有毒气体自然而然地对地球大气造成污染，然而最严重的空气污染却来自人类。

我们的城市有许多工厂，为我们生产食物、衣物和其它产品。每年这些工厂倾吐成千上万吨烟雾进入空气，烧煤炭的火力发电站和建筑增大了大气污染。除此之外，城市中汽车越来越多，他们将大量废气排入大气中，引起疾病甚至死亡。中国目前是世界上第二大温室气体排放国，空气污染有关的疾病，已经占到国内生产总值的2-3%。

没有解决空气污染的简单办法，但人们可以通过节约能源、减少车辆和火力发电站的有害气体排放来达到降低污染的目的。工厂烟囱可以安装滤清装置以减少空气污染，我们能设计和开发洁净的汽车和洁净的燃料，如果能改善城镇公共交通，并设置自行车车道，人们就不再会热衷于使用自家汽车，从而达到全面减少污染的目的。

吸烟不仅对健康有害，而且增加空气污染程度。依照最近的一项调查，每年有400万人死于与吸烟有关的疾病。设立禁烟区有助于减少污染，并能使不吸烟者免受被动吸烟之害。

仅仅这些还不够，我们大家必须竭尽全力防止空气污染，以拯救我们的城市，拯救我们的家园。我们要坚持斗争，直到我们找到解决空气污染的办法。我们相信，我们能打赢这场战斗。

再见，空气污染！

                                         武汉市育才小学    王子祺