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  3. Peering into the 21st century, authorities on the future see extraordinary changes. New scientific breakthrough will allow machi

Peering into the 21st century, authorities on the future see extraordinary changes. New scientific breakthrough will allow machi

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问题     Peering into the 21st century, authorities on the future see extraordinary changes. New scientific breakthrough will allow machines to take on more tasks that the human brain has traditionally done.
    Computers, which once only remembered data, will make more decisions. Machines that tell doctors today what symptoms the patients have may soon be recommending surgery. Others will design new buildings after questioning buyers about their preferences. Increasingly, human thought processes and even values are being programmed into computers, according to Earl Joseph, president of a consulting firm. "Imagine machines which are smarter and more intelligent than humans and, with their embedded (植入的) initiative, can’t wait to tell you about it," he says.
    In everyday life, the future will mean talking directly to computers without pushing buttons. Just tell a toaster, stove or other kitchen devices what to do, and it will hear the message. The oven may even decide itself how long to cook the roast. Tell the television, "I want to watch Channel 12 at 8 p.m. , but store the show for next week" and the job will be done.
    The computer will talk back, too. Already some soft-drink machines complain loudly if you don’t deposit enough cash. At home, a bedside machine may someday tell you, "You forget to turn off the basement light."
    Away from home, the automobile of the future will think for itself. Scientists predict that drivers will feed destinations into a computer that would then explain what route to take and even tell where parking spaces are available. A city’s traffic-control system might instruct the car’s computer how fast to go in heavy traffic and whether to change lanes.
选项 A、the history of computer
B、the different functions of computer
C、the computer in the 21st century
D、the scientific breakthroughs in the 21st century
答案C
解析 本题为主旨归纳题。作者在第一段就开门见山地指出21世纪科学领域里的许多突破将会导致机械将在许多领域内替代人脑完成工作，电脑将在许多领域内有所作为。
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