07年四级作文预测 大全(4)

7．The Greatest Invention in the Past Century

When asked about the greatest invention in the past century, some people may claim that it is the computer; others may say it is the mobile phone; still others may say it is the automobile. In my opinion, however, it is the Internet.
Of course, the computer, or the electric brain, has greatly facilitated our mental work and spare us the burden of calculating, restoring and searching; the automobile saves us time and makes our travel more convenient and the mobile phone has got people closer. But, these are just the extension of human brain, legs and voice. The Internet, however, has changed human life in a more fundamental way since its birth.

First, as a newborn information delivering system, the Internet has made various information available at our finger's tip. Besides, Internet serves as the most convenient means for communication. Through Internet, people can discuss various problems and make friends. Last but not least, the Internet is also a faithful aid in our daily life since people can go shopping and get medical services online.
To sum up, the Internet is indeed the most interesting and important invention man has ever made.

8. Brain Drain

Brain drain is a delicate problem with which this country is confronted. In the last ten years or so, a lot of scientists and technicians have swarmed into developed countries for further studies or research work, let alone numerous promising students. And there are no indications that they will be back home before long. This country has paid the expenses of training them but lost them. How did that come about?

It is self-evident that their delay of coming back is due to those favorable working and living conditions which are essential to research work. Sophisticated equipment makes it easier for one to gain academic achievements. Our competent scientists abroad are offered higher rewards and greater opportunities which contribute to their success in career.
It seems that it isn't impossible to solve the problem. The scientists and the like can be attracted back home so long as great importance is attached to the intellectual's deserving treatment and effective measures are taken to provide them with excellent pay and agreeable conditions.

9. How to Solve Energy Crisis

Man is faced with a grave problem—the energy crisis, which is becoming increasingly serious. First, with the increase in the world's population, the demand for fuels is growing steadily. Second, the rapid development of industry and agriculture calls for an increasing amount of coal, oil and natural gas.

Confronted with the energy crisis, we should take a series of effective measures to save energy. For one thing, it is high time that people all over the world realized the severe fact that our natural resources have been fixed since the earth was created. For another, the governments of all countries are supposed to lay down the rules and regulations to restrict the amount of gas used by cars. Finally, scientific researches should be encouraged to work out efficient methods of saving fuels and to seek new sources of energy.