Many technological innovations have been “double-edged swords” with positive and negative effects on society at large. The automobile is one of such innovations. What do you think is the overall impact of automobiles on society? Write an expository essay (about 300 words) expressing your views on it.

写法(2)：先利后弊,倒向一边

Recently there has been some heated discussion on the positive and negative effects the automobile has brought to a society. Some economists believe that the automobile companies contribute to the world economy by paying more taxes and securing more employments, while other people argue that vehicles of various kinds are the primary source of air pollution and traffic jam, therefore it is not proper to exaggerate the benefit of automobile production. By comparison, the latter point of view tends to be rather convincing.

Admittedly, The idea held by those economists does contain an element of truth. For example, a nice car always offers more convenience while a man are on a business trip or go for an excursion on holiday. Nevertheless, they tend to neglect certain negative effects that may arise. First of all, automobiles give off a large amount of poisonous gas and pollute our environment. Second, as more cars are produced, they will probably rush to the same street at the same time. As a result, traffic jams often occur every day, especially during the rush hours. Third and last, although more cars have been produced, the drivers lack adequate training.Consequently, unskilled drivers are often primarily responsible for more car accidents, which in some cases, cost people precious lives. Some economists may also point out that automobile production is the primary source of national wealth. Even so, the situation is not absolute, nor is it the most critical element. As a matter of fact, monetary gain is not the sole hallmark of a happy life, and people are not expected to sacrifice their health for material luxury.

Given the analysis above, it is justified to conclude that a proper use of automobiles has to be emphasized. For one thing, governmental departments are obliged to take concrete measures to boost automobile production while keeping track of the emission of pollutants. For another thing, citizens should be aware of the corresponding side effects while enjoying the leisure of their car ride. Only in this way can they benefit greatly from the rapid growth of automobile manufacture. (348 words)