Since computers were (invent) in the US in 1946, they have become very important in many areas(领域). There is no doubt(毋庸置疑) that computers are very (use) in technology and business. In space, computers have been used to control the speed and direction of a spaceship. the help of computers, doctors can find diseases(疾病) easily and solve other problems. For example, tiny computers which are inside patients' bodies can keep hearts beating normally. In factories, robots are controlled by computers that are human brains. They can do work that is (danger) to humans. In business, computers are used to place and cancel (取消) orders. They are also making the workplace safer and (good).

Since the Internet came into being, people'

s (life) at home have been changed, too. More and more people have (person) computers that are used to play games and watch movies. Thanks to the Internet, people can do shopping and do business at home. Instead of writing letters on paper, people communicate sending e- mails and chatting online. The whole world is connected. The Internet is making the world smaller, like a village.