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[有奖讨论]第二期 In your opinion

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zephyr 发表于 07-8-26 02:19:43 | 显示全部楼层

car and air pollution

As a citizen, have you even complained about the unfavorable air condition in the city you live? As is known to all, the quality of air influence the health of people who expose to it directly.  Believe it or not, the use of car, a convenient traffic tool in modern society, may lead to some unpleasant consequenses  as a cause of air pollution in big cities,

The first reason is that cars can release waste gas into the air. In order to get their engine work, most types of cars, except some solar or electric ones, have to burn gasoline, so that they can get enough energy for that movements. However, the burning of petrol certainly lead to the generation of carbon dioxide,sulfur dioxide and other chemical gases. These kinds of pollutant may cause exert detremental effects on people’s physical health especially do harm to their respiratory system..What’s more, they can produce acid rain, regarded as a signal of serious pollution, that can even erode our buildings.

Some experts even told us that the dust stired up by passing cars can also contribute to the bad air condition. It is said that excessive amout of float dust also act as air pollutant,staining air to a large extent. Not only do our lungs suffer from dirty air, undisirable mental influence that may also be brought about. How can you manage to feel comfortable when you are standing with dusty air around you? No one can deny the fact that bad environment undermine our level of living standard.

In today ‘s society, we can not expect all the people aroud world quit the convenience offered by cars. After all, cars have become the main traffic tools and play an important role in everyday transport. What we should always keep in mind is that although the invention of cars maybe considered as an grate prograss in the history of human civilization, we can not be blind to the following harmful results. The awareness of the potiential danger promote people to develop new energy resoures, which produce less pollution or even no pollution to our environment, for cars .At least, some people may reduce the use of cars for the purpose of maintain aircondition.
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