新理念网络学习大厅综合测试第四册Unit

./全新版第二版综合B4U2-APartIListeningComprehension<14minutes>SectionADirections:Inthissection,youwillheartenstatements.Numbers1to6arebasedonTextAwhiletherestarebasedonTextB.EachstatementwillbereadONLYONCE.Listencarefullyanddecidewhethereachstatementistrueorfalse.1.A>TB>FScript:Inthelastseventyyears,theautomobileindustryhasbeenrevolutionizedduetothecomputerrevolution.正确答案：B2.A>TB>FScript:Asmartcarcanhelpeliminateallthetrafficaccidents.正确答案：B3.A>TB>FScript:Asmartcarcansendoutawarningsignalifyouaremakingaseriousdrivingmistake.正确答案：A4.A>TB>FScript:Thecomputerrevolutionwillsurelysolvethosetrafficproblemssuchastrafficjams.正确答案：B5.A>TB>FScript:Byestablishingtherelationbetweentherotationsinthesteeringwheelandthecar’spositiononamap,somenavigationalsystemscantelluswherethecaris.正确答案：A6.A>TB>FScript:Smarthighwaysarequiteenvironment-friendlyandbenefitusinmorethanoneway.正确答案：A7.A>TB>FScript:Toturntheautomatedtripintoreality,wehavetorelyonmanyextremelyadvancedtechnologies.正确答案：B8.A>TB>FScript:Thecomputervisionsystemiseasilyinfluencedbyweatherproblemsandmightgivesomeinaccurateinformation.正确答案：A9.A>TB>FScript:Computersinthevehiclesaredesignedtohandlemoreaccuratedecisionsaboutwhereandwhentochangelanestoavoidinterferencewithothervehicles.正确答案：A10.A>TB>FScript:Infact,itismoredifficultandexpensivetoimplementanadvancedtechnologythanpeopleperceive.正确答案：BSectionBDirections:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblankswiththeexactwordsyouhavejustheard.Finally,whenthepassageisreadforthethirdtime,youshouldcheckwhatyouhavewritten.TheprivateautomobilehaslongplayedanimportantroleintheUnitedStates.Infact,ithasbecomea<11>_________________andimportantpartoftheAmericanwayoflife.Bygivingworkersrapid<12>_________________,theautomobilehasfreedthemfromhavingtoliveneartheirplaceofwork.Thishasencouragedthegrowthofthecities,butithasalsoledtotrafficproblems.Forfarmfamiliestheautomobileisvery<13>_________________.Ithasmadeitpossibleforthemtotraveltotownveryoftenforbusinessandfor<14>_________________,andalsototransporttheirchildrento<15>_________________schools.Familylifehasbeen<16>_________________invariousways.Thecarhelpstokeepfamiliestogetherwhenitisusedforpicnics,<17>_________________,andothersharedexperiences.However,whenteenagechildrenhavetheuseofthecar,theirparentscan’t<18>_________________onthem.Thereisagreatdangerifthedriverhasbeendrinkingalcoholortakingdrugs,orshowingoffbyspeedingorbreakingdowntrafficlaws.<19>_________________ofsuchaccidentshaveformedanorganizationcalledMADD<MothersAgainstDrunkDriving>.Thesewomenwanttopreventfurthertragedies.Theyhaveworkedto<20>_________________tolimittheyoungestdrinkingage.Studentshaveformedasimilarorganization,SADD<StudentsAgainstDrunkDriving>andarespreadingthesamemessageamongtheirfriends.Script:TheprivateautomobilehaslongplayedanimportantroleintheUnitedStates.Infact,ithasbecomeanecessaryandimportantpartoftheAmericanwayoflife.Bygivingworkersrapidtransportation,theautomobilehasfreedthemfromhavingtoliveneartheirplaceofwork.Thishasencouragedthegrowthofthecities,butithasalsoledtotrafficproblems.Forfarmfamiliestheautomobileisveryhelpful.Ithasmadeitpossibleforthemtotraveltotownveryoftenforbusinessandforpleasure,andalsototransporttheirchildrentodistantschools.Familylifehasbeenaffectedinvariousways.Thecarhelpstokeepfamiliestogetherwhenitisusedforpicnics,outings,andothersharedexperiences.However,whenteenagechildrenhavetheuseofthecar,theirparentscan’tkeepaneyeonthem.Thereisagreatdangerifthedriverhasbeendrinkingalcoholortakingdrugs,orshowingoffbyspeedingorbreakingdowntrafficlaws.MothersofvictimsofsuchaccidentshaveformedanorganizationcalledMADD<MothersAgainstDrunkDriving>.Thesewomenwanttopreventfurthertragedies.Theyhaveworkedtoencouragethegovernmenttolimittheyoungestdrinkingage.Studentshaveformedasimilarorganization,SADD<StudentsAgainstDrunkDriving>andarespreadingthesamemessageamongtheirfriends.正确答案：necessary正确答案：transportation正确答案：helpful正确答案：pleasure正确答案：distant正确答案：affected正确答案：outings正确答案：keepaneye正确答案：Mothersofvictims正确答案：encouragethegovernmentPartIIReadingComprehension<25minutes>SectionADirections:Inthissection,thereisapassagewithseveralblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.Youmaynotuseanyofthewordsinthebankmorethanonce.Thecar,andtheroadsittravelson,willbe21inthetwenty-firstcentury.Thekeytotomorrow’s"smartcars"willbe22."We’llseevehiclesandroadsthatseeandhearandfeeland23andtalkandact,"predictsBillSpreitzer,technicaldirectorofGeneralMotorsCorporation'sITSprogram,whichisdesigningthesmartcarandroadofthefuture.2440,000peoplearekilledeachyearintheUnitedStatesintrafficaccidents.Thenumberofpeoplethatarekilledorbadlyinjuredincaraccidentsisso25thatwedon’tevenbotherto26theminthenewspapersanymore.Fullyhalfofthesefatalitiescomefromdrunkdrivers,andmanyothersfrom27.Asmartcarcouldeliminatemostofthesecaraccidents.Itcansenseifadriverisdrunk28electronicsensorsthatcanpickupalcoholvaporintheair,andrefuseto29theengine.Thecarcouldalsoalertthepoliceandprovideitsprecise30ifitisstolen.A>viceversa B>location C>sensors D>vastE>mobility F>mention G>duplicate H>startupI>carelessness J>fillout K>revolutionized L>smellM>Adversely N>Approximately O>via 21. ______________________正确答案：K22. ______________________正确答案：C23. ______________________正确答案：L24. ______________________正确答案：N25. ______________________正确答案：D26. ______________________正确答案：F27. ______________________正确答案：I28. ______________________正确答案：O29. ______________________正确答案：H30. ______________________正确答案：BSectionBDirections:Thereareseveralpassagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA>,B>,C>andD>.Youshoulddecideonthebestchoice.PassageOneQuestions31to35arebasedonthefollowingpassage.Speedingoffinastolencar,thethiefthinkshehasgotagreatcatch.Butheisinforanunwelcomesurprise.Thecarisfittedwitharemoteimmobilizer<锁止器>,andaradiosignalfromacontrolcentremilesawaywillensurethatoncethethiefswitchestheengineoff,hewillnotbeabletostartitagain.Fornow,suchdevicesareonlyavailableforfleetsoftrucksandspecialistvehiclesusedonconstructionsites.Butremoteimmobilizationtechnologycouldsoonstarttotrickledowntoordinarycars,andshouldbeavailableintheUKintwomonths.Theideagoeslikethis.Acontrolboxfittedtothecarcontainsamini-cellphone,amicro-processorandmemory,andaGPSsatellitepositioningreceiver.Ifthecarisstolen,acodedcellphonesignalwilltellthecontrolcentretoblockthevehicle’senginemanagementsystemandpreventtheenginebeingrestarted.IntheUK,asetoftechnicalfixesisalreadymakinglifeharderforcarthieves."Thepatternofvehiclecrimehaschanged,"saysMartynRandall,asecurityexpert.Hesaysitwouldonlytakehimafewminutestoteachapersonhowtostealacar,usingabareminimumoftools.Butonlyifthecarismorethan10yearsold.Moderncarsarefartoughertosteal,astheirenginemanagementcomputerwon’tallowthemtostartunlesstheyreceiveauniqueIDcodebeamedoutbytheignition<点火>key.IntheUK,technologieslikethishavehelpedachievea31%dropinvehicle-relatedcrimesince1997.Butdeterminedcriminalsarestillmanagingtofindotherwaystostealcars,oftenbygettingboldoftheowner’skeys.Andkeytheftisresponsiblefor40%ofthetheftsofvehiclesfittedwithatrackingsystem.Ifthecartravels100meterswithoutthedriverconfirmingtheirID,thesystemwillsendasignaltoanoperationscentrethatithasbeenstolen.ThehundredmetersminimumavoidsfalsealarmsduetoinaccuraciesintheGPSsignal.Staffatthecentrewillthencontacttheownertoconfirmthatthecarreallyismissing,andkeeppoliceinformedofthevehicle’smovementsviathecar’sGPSunit.31.What’sthefunctionoftheremoteimmobilizerfittedtoacar?A>Tohelpthepolicemakeasurpriseattackonthecarthief.B>Toallowthecartolockautomaticallywhenstolen.C>Topreventthecarthieffromrestartingitonceitstops.D>Topreventcartheftbysendingaradiosignaltothecarowner.正确答案：C32.Bysaying"Thepatternofvehiclecrimehaschanged"<Lines1-2.Para.4>,MartynRandallsuggeststhat________.A>ittakesalongertimeforthecarthieftodothestealingB>self-preparedtoolsarenolongerenoughforcartheftC>thethiefhastomakeuseofcomputertechnologyD>thethiefhaslostinterestinstealingcarsover10yearsold正确答案：B33._______________isessentialinmakingamodemcartoughertosteal.A>AcodedignitionkeyB>AuniqueIDcardC>AspecialcellphonesignalD>AGPSsatellitepositioningreceiver正确答案：A34.Whydoesthetrackingsystemseta100-metreminimumbeforesendinganalarmtotheoperationscentre?A>Toleavetimefortheoperationscentretogiveanalarm.B>Tokeeppoliceinformedofthecar’smovements.C>Togivethedrivertimetocontacttheoperationscentre.D>ToallowforpossibleerrorsintheGPSsystem.正确答案：D35.Whatwilltheoperationscentredofirstafterreceivinganalarm?A>Startthetrackingsystem.B>Contactthecarowner.C>Blockthecarengine.D>Locatethemissingcar.正确答案：BPassageTwoQuestions36to40arebasedonthefollowingpassage.Accordingtosomeindividuals,ifyourhouseisbuiltintherightposition,thismayaffectyoursuccessinlife,whichseemsstrangetomanypeople.However,tobelieversinFeng-Shui,ortheartofgeomancy,notonlythepositionbutalsothechoiceofdecorationsandeventhecolorofyourhomecanmeanthedifferencebetweengoodfortuneanddisaster.ThisarthasbeenpracticedforcenturiesinChinaandisstillusedalloverSouthEastAsia.EventhehugeHongKongbankscallinageomantiftheyareplanningtobuildnewoffices.LikemanyOrientalbeliefsthegeomant’sskilldependsontheideaofharmonyinnature.IfthereisnoimbalancebetweentheopposingforcesofYinandYang,thebuildingwillbringlucktoitsinhabitants.Thismeansthatthehousemustbebuiltontherightspotaswellasfacingtherightdirection,andalsobepaintedanauspiciouscolor.Forinstance,iftherearemountainstothenorth,thiswillprotectthemfromevilinfluences.Ifthehouseispaintedred,thiswillbringhappinesstotheoccupantswhilegreensymbolizesyouthandwillbringlonglife.Thegeomantbelievesthatunlessalltheseareconsideredwhenchoosingasiteforconstruction,thefortuneofthepeopleusingitwillbeatrisk.Indeed,toignorethegeomant’sadvicecanhavefatalresults.ThedeathoftheinternationallyfamousKung-Fustar,BruceLee,hasbeenusedasanexample.ItissaidthatwhenLeefoundoutthatthehousehewaslivinginwasanunluckyone,hefollowedageomant’sadviceandinstalledaneight-sidedmirroroutsidehisfrontdoortobringhimluck.Unfortunately,astormdamagedthemirrorandthehousewasleftunprotectedfromharmfulinfluences.SoonafterwardsLeediedinmysteriouscircumstances.NotonlyisFeng-ShuistillusedinSouthEastAsia,butithasalsospreadrightacrosstheworld.EveninmodernNewYorkasuccessfulcommercialartistcalledMiltonGlaserhasfoundituseful.Hewassodesperateafterhisofficewasbrokenintosixtimesthatheconsultedageomant.Hewastoldtoinstallafishtankwithsixblackfishandfixaredclocktotheceiling.Sincethenhehasnotbeenburglarizedonce.Itmayseemanincrediblestory,butnoothersuitableexplanationhasbeenoffered.36.FromthepassagewecaninferthatFeng-ShuiisNOTusedin______.A>JapanB>NewYorkC>HongKongD>China正确答案：A37.Geomantsbelievethat______.A>housesmustonlybepaintedredB>housesmustfacemountainsC>natureandlifeshouldbeinharmonyD>greenisanunluckycolor正确答案：C38.GeomantsthinkthatthereasonforBruceLee’sdeathisthat______.A>hedidn’tfollowthegeomants’adviceB>heinstalledaneight-sidedmirrorC>hemisunderstoodthegeomant’sadviceD>astormdamagedtheprotectionforhishouse正确答案：D39.ThestoryofMiltonGlasershowsthat______.A>colorsarenotimportantingeomancyB>geomancyisusedintheWestC>geomancyisusedbyartistsD>thefightagainstcrimeisbeingwon正确答案：B40.Whichofthefollowingbestdescribesgeomancy?A>ItisastyleofOrientaldecoration.B>Itisatypeofpainting.C>ItisanancientChinesebeliefcalledFeng-Shui.D>Itisanarchitecturaldesign.正确答案：CPartIIIVocabularyandStructure<11minutes>Directions:Thereareanumberofincompletesentencesinthispart.ForeachsentencetherearefourchoicesmarkedA>,B>,C>andD>.ChoosetheONEthatbestcompletesthesentence.41.Manynewsafetyfeatureshavebeen________inthenewversionofthispopularcar.A>incorporatedB>associatedC>cooperatedD>excluded正确答案：A42.Thisbookgivesabrief________ofthehistoryofthecastleanddetailsoftheartcollectioninthemainhall.A>referenceB>researchC>outlookD>outline正确答案：D43.Myjobattheassemblylineofthecarfactoryisrather________.A>boreB>boredC>monotonousD>monotony正确答案：C44.Weshouldalways________ourownrights.A>standforB>standupC>standupforD>standby正确答案：C45.ThedoctortoldPennythatmuch________tothesunisbadfortheskin.A>exposureB>extensionC>exhibitionD>disclosure正确答案：A46.Healways________extraresponsibilitieswithoutanycomplaint.A>takestoB>takesinC>takesoverD>takeson正确答案：D47.HewaselectedpresidentoftheLiteraryResearchAssociationby_______ofhisacademicandorganizationalabilities.A>virtueB>meansC>wayD>chance正确答案：A48.Diamondshavelittle_______valueandtheirpricedependsalmostentirelyontheirscarcity.A>extinctB>permanentC>surplusD>intrinsic正确答案：D49.NosoonerhadMrGreenfinishedexplainingthepoemthanthestudents'questions_______topourin.A>beginB>beganC>beginningD>hadbegun正确答案：B50.Beforeusingyournewpressurecooker,readthefollowing______carefully.A>noticesB>announcementC>instructionsD>advertisement正确答案：C51.I'dliketotakeadvantageofthisopportunitytothankyouallforyour______.A>profitB>benefitC>cooperationD>occasion正确答案：C52.Itwas______youthatthedrowningboywassavedandallwaswell.A>duetoB>thankstoC>butforD>owingto正确答案：B53.Theroomconnectswiththedininghall___________ahallway.A>inaccordancewithB>incaseofC>bymeansofD>bynomeans正确答案：C54.Thelittlegirllovingly______Chris'facewiththetipsofherfingers.A>clappedB>feltC>strokedD>whisked正确答案：C55.Radarisusedtoextendthe_____ofman'ssensesforobservinghisenvironment,especiallythesenseofvision.A>validityB>liabilityC>capabilityD>intensity正确答案：C56.Mostpeopleclosely_____apoundingheartandsweatingpalmswiththeexperienceofemotion.A>classifyB>identifyC>satisfyD>modify正确答案：B57.Bewareofthemenaroundyouwho_____fameandwealth.A>goafterB>followupC>seekforD>desireof正确答案：A58.Thenewcomerwas_____untilhecoulddisplayhiswisdomandtalent.A>awaitingB>workinghardC>expectingD>bidinghistime正确答案：D59.Likethesun,theplanetsshifttheirpositionssoslowlythattheirday-to-daymotionishardto___________.A>discoverB>detectC>ascertainD>disguise正确答案：B60.Thisisanewdiscoverythathasanumberofindustrial___________.A>suppliesB>contractsC>applicantsD>applications正确答案：DPartIVTranslation<10minutes>Directions:CompletethesentencesbytranslatingintoEnglishtheChinesegiveninbrackets.61. ThereunionofthemainlandandHongKonghadbeenadreamformanypeople,anditwastheeffortsandwisdomofDengXiaopingthat____________________<使它变成现实>.正确答案：turneditintoreality62. OnlythreeyearsafterthecollapseoftheprojectedEDCandPoliticalCommunitystructures,Europeanintegrationwas____________________<随时会迈出一大步>.正确答案：poisedtotakeagreatleapforward63. ____________________<为了降低生产成本>thefactorymanagedtointroduceanewassemblyline.正确答案：Inordertodecreasethecostofproduction64. ____________________<我们正深受污染之苦>thatweourselveshavebeencausing.正确答案：Wearesufferingfromthepollution65. ____________________<玛丽似乎掌控了所有的事>bythetimehereturned.正确答案：Maryseemedtohavethingsinherhands全新版第二版综合B4U2-BPartIListeningComprehension<14minutes>SectionADirections:Inthissection,youwillheartenstatements.Numbers1to6arebasedonTextAwhiletherestarebasedonTextB.EachstatementwillbereadONLYONCE.Listencarefullyanddecidewhethereachstatementistrueorfalse.1.A>TB>FScript:Therearesomanypeoplekilledincaraccidentsthatallarereportedinthenewspapereveryday.正确答案：B2.A>TB>FScript:Ifthedriverbecomessleepy,acomputerinthedashboardcouldstopthecarimmediately.正确答案：B3.A>TB>FScript:Thedullandtiringprocessoflong-hourdrivingwillputlong-distancedriversinadangerousposition.正确答案：A4.A>TB>FScript:Sensorsinthesmartcarscanlocatetheirpositionsindependently.正确答案：B5.A>TB>FScript:Whenasatellitepassesby,itgivesoffaradiosignalwhichcanbediscoveredbyareceiverinacar’scomputer.正确答案：A6.A>TB>FScript:Asthepriceofmicrochipsisdroppingsharply,theapplicationofGPSinthefutureareactuallyboundless.正确答案：A7.A>TB>FScript:Becauseofthedevelopmentoftechnology,weareabletovisualizeyourtripbyanautomatedhighwaysystem.正确答案：A8.A>TB>FScript:Thelasersystemsaremoreeffectiveatdiscoveringuntidyvehiclesandoperatinginbadweatherconditions.正确答案：B9.A>TB>FScript:Thereremainsomenon-technicaldifficultiestobeovercomesuchasliability,costsandperceptions.正确答案：A10.A>TB>FScript:Itisveryimportantforustorealizethefactthatautomatedvehicleshavealreadybeenwidelyusedinourdailylife.正确答案：ASectionBDirections:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblankswiththeexactwordsyouhavejustheard.Finally,whenthepassageisreadforthethirdtime,youshouldcheckwhatyouhavewritten.Somepessimisticexpertsfeelthattheautomobileisboundtofallintodisuse.Theyseeadayinthenot-too-distantfuturewhenallautoswillbe<11>_________________andallowedtorust.Otherauthorities,however,thinktheautoisheretostay.Theyholdthatthecarwillremaina<12>_________________meansofurbantravelintheforeseeablefuture.Themotorcarwill<13>_________________changesignificantlyoverthenext30years.Itshouldbecomesmaller,safer,andmore<14>_________________,andshouldnotbepoweredbythegasolineengine.Thecarofthefutureshouldbefarmore<15>_________________thanpresenttypes.<16>_________________ofitspowersource,theautointhefuturewillstillbethemainprobleminurbantrafficjams.Oneproposedsolutiontothisproblemisthe<17>_________________highwaysystem.Whentheautoentersthehighwaysystem,aretractable<可伸缩的>armwilldropfromtheautoandmakecontactwitharail.Itisquitesimilartothosepowering<18>_________________electrically.Onceattachedtotherail,thecarwillbecomeelectricallypoweredfromthesystem,andcontrolofthevehiclewillpasstoacentralcomputer.Thecomputerwillthenmonitorallofthecar’smovements.Thedriverwilluseatelephoneto<19>_________________hisdestinationintothesystem.Thecomputerwillcalculatethebestroute,and<20>_________________thecarallthewaytothecorrectexitfromthehighway.Thedriverwillthenbefreetorelaxandwaitforthebuzzerthatwillwarnhimofhiscomingexit.Script:Somepessimisticexpertsfeelthattheautomobileisboundtofallintodisuse.Theyseeadayinthenot-too-distantfuturewhenallautoswillbeabandonedandallowedtorust.Otherauthorities,however,thinktheautoisheretostay.Theyholdthatthecarwillremainaleadingmeansofurbantravelintheforeseeablefuture.Themotorcarwillundoubtedlychangesignificantlyoverthenext30years.Itshouldbecomesmaller,safer,andmoreeconomical,andshouldnotbepoweredbythegasolineengine.Thecarofthefutureshouldbefarmorepollution-freethanpresenttypes.Regardlessofitspowersource,theautointhefuturewillstillbethemainprobleminurbantrafficjams.Oneproposedsolutiontothisproblemistheautomatedhighwaysystem.Whentheautoentersthehighwaysystem,aretractable<可伸缩的>armwilldropfromtheautoandmakecontactwitharail.Itisquitesimilartothosepoweringsubwaytrainselectrically.Onceattachedtotherail,thecarwillbecomeelectricallypoweredfromthesystem,andcontrolofthevehiclewillpasstoacentralcomputer.Thecomputerwillthenmonitorallofthecar’smovements.Thedriverwilluseatelephonetodialinstructionsabouthisdestinationintothesystem.Thecomputerwillcalculatethebestroute,andreservespaceforthecarallthewaytothecorrectexitfromthehighway.Thedriverwillthenbefreetorelaxandwaitforthebuzzerthatwillwarnhimofhiscomingexit.正确答案：abandoned正确答案：leading正确答案：undoubtedly正确答案：economical正确答案：pollution-free正确答案：Regardless正确答案：automated正确答案：subwaytrains正确答案：dialinstructionsabout正确答案：reservespaceforPartIIReadingComprehension<25minutes>SectionADirections:Inthissection,thereisapassagewithseveralblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.Youmaynotuseanyofthewordsinthebankmorethanonce.Onaneight-milestretchofInterstate15tenmilesnorthofSanDiego,trafficengineersare21anMIT-designedsystemwhichwillintroducethe"automateddriver."Theplancallsforcomputers,aidedbythousandsofthree-inch22spikesburiedinthehighway,totakecompletecontrolofthedrivingofcarsonheavilytraffickedroads.Carswillbe23intogroupsoftentotwelvevehicles,onlysixfeet24,travelinginunison,andcontrolledbycomputer.25ofthiscomputerizedhighwayhavegreathopesforitsfuture.By2010,telematicsmaywellbe26oneofthemajorhighwaysintheUnitedStates.Ifsuccessful,by2020,asthepriceof27dropstobelowapennyapiece,telematicscouldbeadoptedinthousandsofmilesofhighwaysintheUnitedStates.Thiscouldprovetobean28boonaswell,savingfuel,reducing29,decreasingairpollution,andservingasan30tohighwayexpansion.A>fatality B>Promoters C>Protesters D>magneticE>apart F>installing G>alternative H>bringsaboutI>inevitable J>microchips K>trafficjams L>cultivationM>incorporatedinto N>environmental O>bunched 21. ______________________正确答案：F22. ______________________正确答案：D23. ______________________正确答案：O24. ______________________正确答案：E25. ______________________正确答案：B26. ______________________正确答案：M2