Computers have become very important in many areas like working and playing .In space, computers help astronauts and pilots control the speed and direction of a spaceship\'s flight.With the help of computers, doctors can find diseases easily and solve other problems.Computers are also used in busine to place.Since the Internet came into being, people\'s lives at home have changed , too.More and more people have personal computers, and they use them to play games and watch movies.Instead of writting letters, people communicate with each other by sending e-mails and chatting on line.Computers have made the world smaller, like a\" village\".Computers have improved our lives, but they have brought problems , too.For instance, if we work on computers too long, we may get headaches or sore eyes .If we play computer games too much, we won\'t study well and get enough exercise.Although computers help us work and at home, we must use them correctly.
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Unit 1 Where are the books about computers, please
