【答案解析】
Computers are playing a very important part in modem society . They can solve the most complicated problems or put thousands of unrelated facts in order. Because they work accurately and at high speeds, they play a key role in automation. Besides , they have found applications in business, transportation, education and other fields.
Computers are also entering ordinary families . As computers are being made small, cheap, and at the same time easy to operate, more and more people buy computers for their homes. People use computers to control the work of washing machines, TV sets, radios, microwave stoves and other electrical appliances. They also use them to process and store all kinds of information. People may use computers to entertain themselves by playing games on them. There is no limit to the application of computers in our lives.
Despite all the advantages , computers can never take the place of human brain. Computers need detailed instructions from human beings in order to function properly. They can never lead an independent life, or "rule the world" by making decisions of their own. No matter how capable they are, they are our slaves, not our masters.