资源描述：
《CET4高分班阅读讲义.doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、第一部分阅读理解全真试题Unit1PartIIReadingComprehension(35minutes)Directions:Thereare4passagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).Youshoulddecideonthebestchoiceandmarkthecorrespondingletteront
2、heAnswerSheetwithasinglelinethroughthecenter.PassageOneQuestions21to25arebasedonthefollowingpassage.Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwithagun,butthemanwiththeportablecomputerinbusinessclass.Inthelast15years,pilotshavereportedwellover100inci
3、dentsthatcouldhavebeencausedbyelectromagneticinterference.Thesourceofthisinterferenceremainsunconfirmed,butincreasingly,expertsarepointingtheblameatportableelectronicdevicesuchasportablecomputers,radioandcassetteplayersandmobiletelephones.RTCA,anorganizationwhichadv
4、isestheaviation(航空)industry,hasrecommendedthatallairlinesban(禁止)suchdevicesfrombeingusedduring“critical”stagesofflight,particularlytake-offandlanding.Someexpertshavegonefurther,callingforatotalbanduringallflights.Currently,rulesonusingthesedevicesareleftuptoindividu
5、alairlines.Andalthoughsomeairlinesprohibitpassengersfromusingsuchequipmentduringtake-offandlanding,mostarereluctanttoenforceatotalban,giventhatmanypassengerswanttoworkduringflights.Thedifficultyispredictinghowelectromagneticfieldsmightaffectanaircraft’scomputers.Exp
6、ertsknowthatportabledeviceemitradiationwhichaffectsthosewavelengthswhichaircraftusefornavigationandcommunication.But,becausetheyhavenotbeenabletoreproducetheseeffectsinalaboratory,theyhavenowayofknowingwhethertheinterferencemightbedangerousornot.Thefactthataircraftm
7、aybevulnerable(易受损的)tointerferenceraisestheriskthatterroristsmayuseradiosystemsinordertodamagenavigationequipment.Asworrying,though,isthepassengerwhocan’theartheinstructionstoturnoffhisradiobecausethemusic’stooloud.13521.Thepassageismainlyabout________.A)anewregulat
8、ionforalairlinesB)thedefectsofelectronicdevicesC)apossiblecauseofaircraftcrashesD)effectivesafetymeasuresforairflight22.Whatissaidaboutthe
