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    7．Anyone driving on Highway I between San  Francisco and Los Angeles recently may have，glimpsed a Toyota Prius with something curious-looking on the roof．Harder to notice was that the person at the wheel was not actually driving．The car is a project of Goole，which can drive themselves，using artificial intelligence software that can sense anything near the car and imitate the decisions made by a human driver．
    Driverless cars are years from mass production，but technologists who have long dreamed of them believe that they can transform society as profoundly as the Internet has．
    Robot drivers react faster than humans，have 360-degree perception and do not get distracted，sleepy or intoxicated，the engineers argue．They speak in terms of lives saved and injuries avoided-more than 37，000people died in car accidents in the United States in 2008．The engineers say the technology could double the capacity of roads by allowing cars to drive more safely while closer together．Because the robot cars would eventually be less likely to crash，they could be built lighter，reducing fuel consumption．But of course，to be truly safer，the cars must be far more reliable than，say，today's personal computers，which crash on occasion and are frequently infected．
    The Google research program using artificial intelligence to revolutionize the automobile is proof that the company's ambitions reach beyond the search engine business．Yet Goole did not yet have a cheer plan to create a business from the experiments．
    Under the current law，a human must be in control of a car at all times，but what does that mean if the hom ant is not really paying attention as the car erosses through a school zone，figuring that the robot is driving more safely than he would？And in the event of an accident，who would be liable-the person behind the wheel or the maker of the software？

    71．The purpose of the author writing the passage isB．
    A．to persuade Americans to buy driverless cars
    B．to introduce a new application of artificial intelligence
    C．to inform us of the latest development in the Internet
    D．to show Google is an ambitious high-tech company
    72．The engineers believe driverless cars will bring great benefits exceptC．
    A．the fewer car accidents
    B．the greater capacity of roads
    C．more seats in vehicles
    D．less fuel consumption
    73．What is most important to make sure driverless cars are absolutely safe？A
    A．More reliable corrupters．
    B．Special road systems．
    C．Good driving habits．
    D．New laws on driving．
    74．From passage we can learn that GoogleD．
    A．has decided to expand its business into the car business．
    B．has set a clear schedule to make profit from the business
    C．cares little about the influence made by the new program
    D．will completely change the way people drive cars
    75．What conclusion can we draw from the last paragraph of the passage？C
    A．The driverless cars will be forbidden in school zones．
    B．The Google researchers neglect the related legal issuers．
    C．The Google's technology is ahead of the law in many areas．
    D．Drivers will not be responsible for the accident in future．

    分析 本文属于说明文阅读，作者通过这篇文章主要向我们介绍了人工智能的一个新的应用无人驾驶汽车，它具有更加安全，减少交通堵塞使道路宽敞和节省燃料的优点，是未来发展趋势．

    解答 71．B．推理判断题．根据文章第一段"The car is a project of Goole，which can drive themselves，using artificial intelligence software that can sense anything near the car and imitate the decisions made by a human driver"可知作者的目的是介绍人工智能的一个新的应用无人驾驶汽车；故选B．
    72．C．细节理解题．根据文章第三段"They speak in terms of lives saved and injuries avoided-more than 37，000people died in car accidents in the United States in 2008．The engineers say the technology could double the capacity of roads by allowing cars to drive more safely while closer together"可知无人驾驶车的优点是更加安全，减少交通堵塞使道路宽敞和节省燃料；故选C．
    73．A．细节理解题．根据文章第三段"But of course，to be truly safer，the cars must be far more reliable than，say，today's personal computers，which crash on occasion and are frequently infected"可知确保无人驾驶汽车是绝对安全的需要更多可信赖的人；故选A．
    74．D．推理判断题．根据文章第五段"The Google research program using artificial intelligence to revolutionize the automobile is proof that the company's ambitions reach beyond the search engine business"可知谷歌将彻底改变人们开车的方式；故选D．
    75．C．推理判断题．根据文章最后一段"Under the current law，a human must be in control of a car at all times，but what does that mean if the hom ant is not really paying attention as the car erosses through a school zone，figuring that the robot is driving more safely than he would"可知最终为我们负责的是谷歌；因此谷歌的技术在许多领域领先于法律；故选C．

    点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．

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    C．it is more expensive to bring up a child
    D．people are losing their jobs because of the recent financial crisis
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    C．reducing family income tax   D．increasing subsidies for families and nursery schools．
    44．It can be inferred from the text thatA．
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    B．more and more families in Britain are breaking up because they are having fewer children
    C．among Europeans，British people work hardest and earn the least
    D．childcare takes up too much energy and time for the British
    45．The underlined word"subsidies"in Paragraph 5meansD．
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    10．"There is an out-of-date idea that children grow up and leave home when they're 18，and the truth is far from that，"says Mr．Larry Bumpass of the University of Wisconsin．Today unexpected numbers of young adults are living with their parents．"There is a great change in the middle class，"declares Allan Schnaiberg of Northwestern University，whose son，19，moved back in after an absence of eight months．
           Scientists show a number of reasons for this return to the nest．The marriage age is rising，a condition that makes home and its pleasantness particularly attractive to young people．A high divorce （离婚） rate and a low remarriage rate make some differences．For some，the expense of an away-from-home college education has become so great that many students now attend local schools．Even after graduation，young people find their wings tied by terrible housing costs．
           Living at home，says Knighton，a school teacher，continues to give security （安全保卫） and moral（道义的） support．Her mother agreed．"Its strange for the kids to pay all that money for rent．It makes sense for kids to stay at home．"But sharing the family home requires changes for all．There are the hassles over bathrooms，telephones and privacy．Some families，however，manage the careful balancing act．But for others，it proves too difficult．Michelle Del Turco，24，has been home three times and left three times．"What I considered a social drink，my dad considered an alcohol （酒精） problem，"she explains．"He never liked anyone I dated，so I either had to hide away or meet them at friends'houses．"
           Just how long should adult children live with their parents before moving on？Most scientists feel lengthy homecomings are a mistake．Children，can end up with a sense of defeat and failure．And aging parents，who should be enjoying some freedom，find themselves stuck with too many things．Many agree that brief visits，however，can work well．
    52．According to the author，there was once a trend in the U．S．A．
    A．for young adults to leave their parents and live separately
    B．for middle class young adults to stay with their parents
    C．for married young adults to move back home after a lengthy absence
    D．for young adults to get jobs nearby in order to live with their parents
    53．Which of the following does not lead to young adults returning to the nest？B
    A．Young adults find housing costs too high．
    B．Young adults are not old enough．
    C．Young adults look for parental comfort and support．
    D．Quite a number of young adults attend local schools．
    54．The underlined word"hassles"in the passage probably meansD．
    A．agreements                                            
    B．worries
    C．disadvantages                                        
    D．quarrels
    55．According to the passage what is the best for both parents and children？C
    A．They should share the family expenses．
    B．Children should leave their parents when they are grown up．
    C．Adult children should live away from their parents and visit their parents from time to time．
    D．Parents should support their adult children when they are in trouble．
    56．One of the disadvantages of young adults returning to slay with their parents is thatA      
    A．there will certainly be inconveniences in even-day life
    B．most parents find it difficult to keep a bigger family going
    C．the young adults try to be overprotected by their parents
    D．public opinion is against young adults staying with their parents．

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