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  3. There have been many technological developments in the 20th century , for example, computers and electric power. Choose either o

There have been many technological developments in the 20th century , for example, computers and electric power. Choose either o

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问题     There have been many technological developments in the 20th century , for example, computers and electric power. Choose either of them , describe the changes it has brought about and discuss whether all the changes are positive.
    You should write no less than 250 words. Write your article on ANSWER SHEET 2.
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答案 The 20th century has seen many developments in science and technology. The widely-used computer serves as the most notable example: Only a few decades ago, people knew very little about computers, whereas now nearly every work unit or family, at least in cities like Beijing, has one or more computers. Computers have greatly changed our life. To begin with, they have made our work easier. Scientists use them to do all sorts of complicated calculations. Ordinary people gain easy access to the information they want through the use of computers. Even children benefit from computers, which can help them with their studies. Secondly, computers have made our time more flexible. Instead of our work being confined to a certain period of time and to a fixed place, people can now work while travelling or simply work at home. This flexibility makes our working lives not only less stressful but also more efficient. Thirdly, computers have made our life more interesting. We can now make friends with people all over the world through the Internet, and feel that we are now living in a global village. However, as the old saying goes, "Every coin has two sides", computers also give rise to a number of problems. They may refuse to work if there is a breakdown because of a virus or a technical failure. When people become too dependent on computers, they will not be a-ble to function when computers are not available. Worst of all, children may get harmful information via the Internet or become addicted to computer games. All these bad effects call for our special concern. All in all, I would say that computers bring us more benefits than problems. If properly used, computers are essential for improving life in the 21st century.
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