There is no doubt that computers are very useful in technology and business.With the h_______ of computers, doctors can find diseases easily and solve other problems. In factories, robots _________(控制) by computers can do work that is dangerous to humans. In business, computers are used to place and cancel orders. They are also making the workplace ________(安全) and better.
Since the Internetc_________ into being, people’s lives at home have changed, too. More and more people have personal computers, a_________they use them to play games and watch movies. Instead of writing letters on paper, people communicate by sending e-mails and c______ online. The whole world is connected. The Internet is making the world smaller, l_________ a village.
Computers have improved our lives. They have brought us _________(方便), but they have brought problems, too. For example, if we e_______ ourselves to computers too long, we may get headaches or sore eyes. Besides, not everything we read on the Internet is true or good for us. Computers help us at work and at home, but they must be usedp________.