题目内容
2．
Global Positioning Systems are now a part of everyday driving in many countries．These satellite-based systems provide turn-by-turn directions to help people get to where they want to go．But，they can also cause a lot of problems，send you to the wrong place or leave you completely lost．Many times，the driver is to blame．Sometimes a GPS error is responsible．Most often，says Barry Brown，an expert in human-computer interaction，it is a combination of the two．
We spoke to Mr Brown by Skype（网络电话软件）．He told us about an incident involving a friend who had flown to an airport in the eastern United States．There he borrowed a GPS-equipped car to use during his stay．Barry Brown："And they just plugged in an address and then set off to their destination．And，then it wasn't until they were driving for thirty minutes that they realized they actually put in a destination back on the West Coast where they lived．They actually put their home address in，the GPS is kind of‘garbage in garbage out'"．
Mr Brown says this is a common human error．But，he says，what makes the problem worse has to do with some of the shortcomings，or failures，of GPS equipment．Barry Brown；"One problem with a lot of the GPS units is they have a very small screen and they just tell you the next turn．Because they just give you the next turn，sometimes that means that it is not really giving you the overview that you would need to know that it's going to the wrong place．"
Barry Brown once worked on a project with Eric Laurier from he University of Edinburgh．The two men studied the effects of GPS devices on driving by placing cameras in people's cars．They wrote a paper based on their research．It is called"The Normal，Natural Troubles of Driving with GPS"．It lists several areas where GPS systems can cause confusion for drivers．These include maps that are outdated，incorrect or difficult to understand．They also include timing issues related to when GPS commands are given．
Barry Brown says to make GPS systems better we need a better we need a better understanding of how drivers，passengers and GPS systems work together．
21．In Paragraph 2，Mr Brown mentioned his friend in the conversation toD．
A．build up his own reputation
B．laugh at his stupid friend
C．prove the GPS system is only garbage
D．describe an example of human error
22．Which of the following statements would Barry Brown most likely agree with？D
A．GPS units are to blame for most GPS service failures．
B．We should introduce higher standards for the driving license．
C．Cameras are urgently needed to help improve GPS systems．
D．Drivers，GPS systems and passengers should unite to improve GPS systems．
23．What is Mr Brown's attitude towards GPS？C
A．Unconcerned
B．Prejudiced．
C．Objective．
D．Critical．
24．What would be the best title for the text？A
A．Driving with GPS can be difficult．
B．Driving confusions can be caused by small screens
C．Driving without GPS should be much more convenient
D．GPS equipment in driving：to be deserted of improved？
分析 本文是一篇科技说明文．通过科学调查分析表明：全球定位系统出现的问题是司机和全球定位系统失误两个方面的原因造成的．为了使全球定位系统更好的为我们服务，需要司机、乘客和全球定位系统的协调工作．
解答 21．D 写作意图题．根据第二段的They actually put their home address in．和下面的句子：Mister Brownsays this is a common human error．可知Mr Brown是在列举人的错误的例子．故选D．
22．D 细节理解题．根据最后一段的Barry Brown says to make GPS systems better we needa better understanding of how drivers，passengers and GPS systems worktogether．可知Barry Brown认为GPS系统，司机和乘客应该一起努力提高．故D正确．
23．C 推理判断题．作者在文章中只是客观的评价GPS的优缺点，故作者的态度是客观的．故B正确．
24．A 主旨题．根据文中内容，主要讲述了通过科学调查分析表明：全球定位系统出现的问题是司机和全球定位系统失误两个方面的原因造成的．为了使全球定位系统更好的为我们服务，需要司机、乘客和全球定位系统的协调工作．因此开车时很好的使用全球定位系统不是一件易事，结合选项，故选A
点评 本文是一个科教类阅读，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的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题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答案，切忌胡乱猜测，一定要做到有理有据．
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