篇一：Car and Air Pollution
Cars have created a lot of serious problems in our world. All the time, they are pumping huge amounts of waste gases into the atmosphere, causing disease and even death.
One possible solution is to design and develop clean cars and clean fuels. But it may take decades for the new models to completely replace the traditional ones.
Another solution is to develop modern public transportation systems and restrict the use of private cars. If the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not drive private cars. On the whole, the elimination of air pollution needs the co-efforts from the government and the public. This problem will be solved only with the help of science and technology.
Each year there is an increasing number of cars on the roads as millions of new cars are produced. One out of six Americans works at making cars, driving trucks, building roads or filling up gas. Americans couldn't live without cars!
Most Americans would find it hard to imagine life without a car. However, some have realized the serious problem of air pollution caused by cars. The polluted air becomes poisonous and dangerous to health.
One way to get rid of the polluted air is to make a car without pollution. But to build a clean car is easier said than done. Progress in this field is slow.
Another way is to replace car engines with something else. Inventors are now working on steam cars as well as electric cars. Many makers believe that it will take years to develop a practical model for us.
To prevent the world from being polluted by cars, we have to make some changes in our lives. Americans, for example, have to cut down on the number of their total cars.They are encouraged to use bicycles, which are thought to help keep the air clean.
But this change does not come easily. A large number of workers may find themselves without jobs if a car factory cioses down. Thus the problem of air pollution would become less important than that of unemployment. Although cars have led us to a better life, they have also brought us new problems.
篇三：Car and Air Pollution
Too many cars have caused a lot of serious problems in our world. Besides congestion, accidents and fast fuel consumption, cars are responsible for a good part of air pollution in big cities.
One possible solution is to design and develop clean cars and clean fuels. In Shanghai, some of the public buses begin to run on natural gas, which does not give off as much carbon dioxide as petrol. Another solution is to develop modern public transportation systems and restrict the use of private cars. If the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not buy private cars. Thus, the total number of cars in big cities will reduce greatly.
On the whole, the elimination of air pollution needs the collective efforts from the government, the public and the environmentalists.
In general, there are two way of traveling, private cars and public transportation. Chinese people should regard public transportation as their first traveling opinion.
First, there are so many people living in this countries that make it so crowded. If each chinese people own a car, there will be far more traffic jams and accidents, which increase you impatience.
Moreover, there will be far more pollution resulted from cars. Once a car started, it release huge amount of dirty gas and heat, which lead to great pollution and result in green house effect.