directions: you are allowed 30 minutes to write a composition on the topic science and technology. you should write at least 120 words and base your composition on the following instructions.

　　1. science and technology play an important role in modern.

　　2. science and technology are not always a positive force in modern life.

　　science and technology

　　science and technology play an important role in people's daily lives. if you compare the life of people today with that in the past, it is easy to see that science and technology have done a great deal to improve the quality of people's lives. for example, computers have become our good friends: with the help of computers, people all over the world are able to share whatever information on the net, which shortens the distance between them. with the invention of radio and tv, people now can stay at home to get themselves informed about both domestic and international news.

　　but as a coin has two sides, technology can aisc have an negative influence upon people's lives. now technology crimes are very common. what's more, the nuclear bomb threatens our human existence. so i think we must pay enough attention to the misuse of technology.

　　in spite of its disadvantages, we should admit that technology is very useful, without science and technology, man's life would not be as convenient as today.