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1、南宁市高考英语四月完形填空、阅读理解课外练习（8）答案阅读理解（2014山东实验中学一模）GlobalPositioningSystems（全球定位系统）arenowapartofeverydaydrivinginmanycountries.Thesesatellite-basedsystemsprovideturn・by-turndirectionstohelppeoplegettowheretheywanttogo.However,theycanalsocausealotofproblems,
2、sendyoutothewrongplaceorleaveyoucompletelylost.Manytimes,thedriveristoblame.SometimesaGPSerrorisresponsible.Mostoften,saysBarryBrown,itisacombinationofthetwo.BarryBrowniswiththeMobileLifeCentreinStockholm,Sweden.Hetoldusaboutanincidentinvolvingafriend
3、whohadflowntoanairportintheeasternUnitedStates.ThereheborrowedaGPS-equippedcartouseduringhisstay.MrBrownsays,“Theyjustpluggedinanaddressandthensetofftotheirdestination.And,thenitwasn'tuntiltheyweredrivingforthirtyminutesthatthey十―outrealizedtheyactual
4、lyputinadestinationbackontheWestCoastwheretheylived.Theyactuallyputtheirhomeaddressin.Soagain,theGPSiskindofMrBrownsaysthisisacommonhumanerror,butwhatmakestheproblemworsehastodowithsomeoftheshortcomings,orfailures,ofGPSequipment.Hesays,“Oneproblemwith
5、alotoftheGPSunitsistheyhaveaverysmallscreenandtheyjusttellyouthenextturri.Becausetheyjustgiveyouthenextturn,sometimesthatmeansthatitisnotreallygivingyoutheoverviewthatyouwouldneedtoknowthatit'sgoingtothewrongplace."MrBrownsays,“Oneofthethingsthatstruc
6、kus,perhapsthemostimportantthingwasthatyouhavetoknowwhatyou'redoingwhenyouuseaGPS.Therearethesenewskillsthatpeoplehavedeveloped.Therearethesenewcompetencies（资格）thatyouneedtohavetobeabletouseaGPSbecausetheysometimesgowrong.Thisgoesagainstacommonbelieft
7、hatGPSsystemsareforpassivedriverswholacknavigationalskills・"BarryBrownsaystomakeGPSsystemsbetterweneedabetterunderstaridingofhowdrivers,passengersandGPSsystemsworktogether.1・AccordingtoBarryBrow,inmostcases,areblamefortheproblems.A.humanerrorsB.GPSerr
8、orsC・errorscausedbybothdriversandGPSD・errorscausedbypittinginawrongaddress2.TheexampleofBarryBrown'sfriendisusedtoshowthat.A.GPSisnothingbutgarbageB・GPSisstillnotaccurateenoughC・itisdifficultfordriverstouseGPSequipmentD・sometimesdriversareresp
