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    2．Do you sometimes put off doing your homework on a school night to watch TV？A new study says that middle school students who watch TV or play video games during the weekdays do worse in school．
    The study also says that watching TV and playing video games on weekends don't affect school performance that much．
    "On weekdays，the more they watched，the worse they did，"said Dr．Iman Sharif of Children's Hospital at Montefiore in New York．"They could watch a lot on weekends and it didn't seem to connect with doing worse in school．"
    The study appears in October issue of Pediatrics．Researchers drew their conclusions after surveying 4，500students in New Hampshire and Vermont middle schools．
    To reach their findings，researchers didn't look at grades or test scores．Instead，they asked students to rate（评价） their own performance on a scale ranging from"excellent"to"below average"．
    Other studies have found a connection between kids'ability to learn and the amount of TV they watch．One study even found that kids with televisions in their bedrooms scored about eight points lower on math and language arts tests than kids without．
    What should a kid do？The American Academy of Pediatrics recommends that kids watch TV no more than two hours and that televisions be kept out of children's rooms．Weekends viewing should be kept to four hours at most each day．

    68．The passage mainly talks about the relationships betweenB．
    A．TV watching and students'character training
    B．TV watching and students'school performance
    C．students'communicating skills and TV watching
    D．kids'mental development and TV watching
    69．What can be concluded from the passage？B
    A．Kids can watch TV as long as they wish on the weekends．
    B．Kids can watch TV longer on the weekends than on weekdays．
    C．Kids should not be allowed to watch TV on the weekends．
    D．Kids can watch TV during the weekdays in their rooms for a long time．
    70．The purpose of keeping televisions out of children's room is toC．
    A．protect the TV sets from being broken by kids
    B．prevent the kids from playing video games on TV
    C．limit the time of TV the kids watch
    D．provide the kids with the quietness they need to study
    71．Who is likely to have excellent school performance according to the passage？D
    A．A student putting off doing homework on a school night to watch TV．
    B．A student who watches TV 4hours a day．
    C．A kid who has TV set in his own room．
    D．None of the above．

    分析 本文是一篇科教类阅读，研究说学生不应该在学校日的晚上看电视．

    解答 68-71 BBCD
    68题答案：B考查细节推理，根据文章第一段的A new study says that middle school students who watch TV or play video games during the weekdays do worse in school．一项新的研究说在上学日看电视或玩视频游戏的学生在学校表现要糟糕些．可知文章主要讲的是"看电视和学校表现之间的关系"，故本题答案为B选项．
    69题答案：B考查细节推理，根据文章第二段The study also says that watching TV and playing video games on weekends don't affect school performance that much．该研究也说在周末看电视或者玩视频游戏对学校表现的影响没有那么大．可知"在周末看电视的时间可以比上学日长"，故本题答案为B选项．
    70题答案：C考查细节推理，根据最后一句的The American Academy of Pediatrics recommends that kids watch TV no more than two hours and that televisions be kept out of children's rooms．美国儿科学会建议孩子看电视的时长不应该超过两个小时而且电视也应该放在孩子的房间外面．可知将电视放在房间外面的原因是为了限制孩子看电视的时间，故本题答案为C选项．
    71题答案：D考查细节推理，A选项"在学校日晚上推迟作业看电视"会影响学习，B选项"每天看四个小时电视"也会影响学习（除非是周末），C选项"房间里有电视"根据第二段最后一句话可知也会影响学习．综上，A、B、C选项中的学生都不可能在学校表现"优秀"，故本题答案为D选项．

    点评 本文是一篇科教类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对 性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．

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    A．A health magazine
    B．A clothing website．
    C．A sports guidebook
    D．A travel advertisement．

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    科目：高中英语 来源： 题型：阅读理解

    12．Driving in traffic can be extremely stressful．Pedestrians appear out of nowhere，cars suddenly pull out of parking spots，and roads become slippery due to rain or snow．Knowing when to brake and when to accelerate in such situations is hard enough for a human driver，let alone a robotic one．But several carmakers-and a few tech companies-are working to convince drivers to let driverless cars take the wheel．
           Without question，the most anticipated benefit of driverless cars is improved safety．Driverless systems will feature sensors that detect safety threats that human drivers might miss．Many carmakers already offer systems that alert drivers whenever they get dangerously close to other cars．
    Also，driverless systems have the benefit of increased efficiency．Driverless cars won't waste as much gas as human drivers do，and guided by advanced GPS，they'll always take the fastest route．Once driverless cars become widely available，common people can have their own driver，and they'll just sit back and relax while their car's computer takes the wheel!
    Although completely driverless cars won't be on the market for several years，the technology behind them is already appearing in phases．Two examples are the Active Lane Keeping Assist option for Mercedes-Benz cars and Ford's Traffic Jam Assist．In the first option，the system warns the driver whenever the car crosses lane markings by causing the steering wheel to vibrate（振动）．In the second option，the system helps the car keep pace with other cars while remaining in its current lane．The system is being developed to help relieve blocking on busy roads．
           Several carmakers claim that they'll produce driverless cars within the next decade．But critics aren't so sure，warning that a completely driverless car must be able to make split-second decisions in even the most complex traffic situations．In addition，the car's computer must become smart enough to know when to ask the driver to intervene （介入，干涉） to prevent an accident．
           Full government approval won't happen until driverless cars are proven safe．In the meantime，expect to see carmakers offer ever-smarter features on their new models．
     （Note：Answer the questions or complete the statements in NO MORE THAN TWELVE WORDS）
    78．One of the factors that make traffic extremely stressful is thepedestrians appearing out of nowhere/cars pulling out of parking spots/slippery roads due to rain or snow
    79．What are the benefits of driverless system？Improved safety and increased efficiency
    80．What will happen to a car with the Active Lane Keeping Assist when it crosses lane markings？The steering wheel will vibrate．
    81．Driverless cars won't be on the market until they canmake split-second decisions and know when to ask the driver to intervene．

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