BarryBrowniswiththeMobileLifeCentreinStockholm，Sweden．HetoldusaboutanincidentinvolvingafriendwhohadflowntoanairportintheeasternUnitedStates．ThereheborrowedaGPS-equippedcartouseduringhisstay．Mr．Brownsays，"Theyjustpluggedinanaddressandthensetofftotheirdestination．And，thenitwasn'tuntiltheyweredrivingforthirtyminutesthattheyrealizedtheyactuallyputinadestinationbackontheWestCoastwheretheylived．Theyactuallyputtheirhomeaddressin．Soagain，theGPSiskindof'garbageingarbageout'．"
Mr．Brownsaysthisisacommonhumanerror，butwhatmakestheproblemworsehastodowithsomeoftheshortcomings，orfailures，ofGPSequipment．Hesays，"OneproblemwithalotoftheGPSunitsistheyhaveaverysmallscreenandtheyjusttellyouthenextturn．Becausetheyjustgiveyouthenextturn，sometimesthatmeansthatitisnotreallygivingyoutheoverviewthatyouwouldneedtoknowthatit'sgoingtothewrongplace．"
Mr．Brownsays，"Oneofthethingsthatstruckus，perhapsthemostimportantthingwasthatyouhavetoknowwhatyou'redoingwhenyouuseaGPS．Therearethesenewskillsthatpeoplehavedeveloped．Therearethesenewcompetencies（资格）thatyouneedtohavetobeabletouseaGPSbecausetheysometimesgowrong．ThisgoesagainstacommonbeliefthatGPSsystemsareforpassivedriverswholacknavigationalskills．"
BarryBrownsaystomakeGPSsystemsbetterweneedabetterunderstanding ofhowdrivers，passengersandGPSsystemsworktogether．
41．AccordingtoBarryBrow，inmostcases，Careblamefortheproblems．
A．humanerrors
B．GPSerrors
C．errorscausedbybothdriversandGPS
D．errorscausedbyputtinginawrongaddress
42．TheexampleofBarryBrown'sfriendisusedtoshowthatD．
A．GPSisnothingbutgarbage
B．GPSisstillnotaccurateenough
C．itisdifficultfordriverstouseGPSequipment．
D．sometimesdriversareresponsiblefortheproblem
43．ItcanbeinferredfromthesecondparagraphthatC．
A．It'simpossibletodrivefromtheeasttothewestintheUS．
B．BarryBrown'sfriendwenttoStockholm，Swedenbyplane．
C．Givenwronginstructions，theGPSwillproducewrongresults．
D．GPSsystemsareforpassivedriverswholacknavigationalskills．
44．WhichofthefollowingsisoneoftheshortcomingsofGPSequipment？A
A．Ittellsthedrivertoturnonceatatime．
B．Itgivesthedrivertheoverview．
C．Itsscreenistoosmalltobeseenclearly．
D．Itisonlysuitableforpassivedrivers．
45．What'sthemainideaofthetext？B
A．GPSsystemsneedtobeimproved．
B．DrivingwithGPScanbedifficulttonavigate．
C．DriversshouldunderstandhowGPSsystemswork．
D．DriversshouldlearntouseGPSsystemscorrectly．在线课程
分析 本文属于说明文阅读，作者通过这篇文章主要向我们讲述了GPS可以给司机带来便利，也会误导司机，警告读者一定要谨慎使用．
解答 41．C．细节理解题．根据文章第一段"Mostoften，saysBarryBrown，itisacombinationofthetwo"可知Barry Brow认为，在大多数情况下是由司机和GPS两者引起的错误；故选C．
42．D．细节理解题．根据文章第二段"thenitwasn'tuntiltheyweredrivingforthirtyminutesthattheyrealizedtheyactuallyputinadestinationbackontheWestCoastwheretheylived"可知Barry Brown的朋友的例子是用来证明有时是司机引起的错误；故选D．
43．C．推理判断题．根据文章第二段最后两句"They actually puy their home address in．So again，the GPS is kind of‘garbage in garbage out'．"和对全段的整体理解可知，答案C"给错误的指令，导航系统就会产生错误的结果"符合文意；故选C．
44．A．细节理解题．根据文章第三段第二句"He says，‘One problem with a lot of the GPS units is they have a very small screen and they just tell you the next turn．'"可知它告诉司机一次转一次，故选A．
45．B．主旨大意题：从第一段的：But，they can also cause a lot of problems，send you to the wrong place or leave you completely lost．可知文章讲的是GPS带来的困难．故选B．
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．