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1、7A版优质实用文档高考英语练习（二）II.GrammarandVocabularySectionADirectionsAfterreadingthepassagesbelowfillintheblankstomakethepassagescoherentandgrammaticallycorrect.Fortheblankswdthagivenword,fillineachblankwiththeproperformofthegivenwordfor.Theotherblanks,useonewordthatbestfitseachblank.A
2、Thebiggestsafetythreatfacingairlinestodaymaynotbeamanwithagunbutthemanwiththeportablecomputerinbusinessclass.Inthelast25years,pilotshavereportedwellover200incidentsthat(25)__________havebeencausedbyelectromagneticinterference.Unclear(26)______________thesourceofthisinterferen
3、ceremains,increasingly,eGpertshavefoundoutthatportableelectronicdevicessuchasportablecomputers,radioandmobiletelephonesare(27)_____________(blame).RTCA,anorganizationwhichadvisesaviationindustry,hassuggestedthatallairlinesbansuchdevicesfrom(28)_____________(use)during“key”sta
4、gesofflight,particularlytake-offandlanding.SomeeGpertshavegone(29)______________(far),callingforatotalbanduringallflights.Nowadays,rulesonusingthesedevicesareleftuptoairlines.Andalthoughsomeairlinesbanpassengersfromusingsuchequipmentduringtake-offandlanding,mostarenotwillingt
5、oenforceatotalban,ifmanypassengerswanttoworkduringflights.Thedifficultyisunderstanding(30)_____________electromagneticfieldsmightaffectanaircraft'scomputers.EGpertsknowthattheportabledevicesgiveoffradiation,each(31)______________(affect)thosewavelengthswhichaircraft187A版优质实用文
6、档7A版优质实用文档suseforcommunication.But,becausetheyhavenotbeenabletoreproducetheseeffectsinalaboratory,theyhavenowayofknowingwhethertheinterferencemightbedangerousornot..Thefactthataircraftmaybeintroublebecauseoftheinterferenceraisestherisk(32)____________somepeoplemayuseradiosyst
7、emsinordertodamagenavigation(导航)equipment.Asworrying,though,isthepassengerwhocan'theartheinstructionstoturnoffhisradiobecausethemusic'stooloud.(B)It’sofficial,nomatterwhereyoulive:heathfuleatingis___33____thebestwaystoprotectyouragingbrain.Conversely,adietthatskimpsonfruit,ve
8、getables,wholegrains,nutsandfishandincludeslotsoffriedfoods,redmeata
