第第頁共15頁dimensionandhavemuchmoremobility,especiallyinurbanclosequarterswheregroundtransportationisgridlocked.”Thepassengerdroneprogressmayfollowaslopingtakeoffratherthanverticalleap.CarnegieMellon'sSinghseesalongroadaheadfilledwithlotsoftesting,analysis,regulationandeffortstowinthepublic'strustbeforethetechnologybecomesaviabletransportationoption.“Thereisthedangerofsomeonemovingtoofastandthenhavingaproblemthatsetstheindustrybackforsometime,”hesays.Personalflyingcarshavefailedtogainpopularityamonghouseholdsmainlybecause.A.peopledon'thavethecouragetotakethecarstotheair.peopleareunwillingtotrainforapilot'slicense.peopleworrythattheymaynotbequalifiedtoflythecarssafely.itispracticallyimpossibletocombinecarsandaircrafttogether.WhichofthefollowingisNOTanadvantageofpassengerdrones?A.Itcanliftmoreweight.B.Itislighterinweight.C.Itmakeslessnoise.D.Itissimplerinmechanicaldesign.WhatisHirschberg'sattitudetowardspassengerdrones?A.disapprovingB.neutralC.skepticalD.cautiouslyoptimisticWecanlearnfromthepassagethat.A.artificialintelligencecaneasilytackletheproblemsoccurringinairtraffic.humanpilotsinautonomousaircraftwillendangerthesafetyofpassengers.thepassengerdroneindustrywillmakemajorbreakthroughsinthenearfuture.D.thepublic'sdistrustmayhinderthedevelopmentofpassengerdrones.SectionCDirections:Readthepassagecarefully.Fillineachblankwithapropersentencegiveninthebox.Eachsentencecanbeusedonlyonce.Notethattherearetwomoresentencesthanyouneed.Watchingaboxingmatchgivesthemanoutletforthisaggression.Iampersonallynotatallinfavorofaggressivesportslikeboxing.Inmypersonalopinion,boxingcanbesothrillingthatmanypeopledarenottohaveatry.Professionalboxersaremuchmoreatriskthantheiramateurcounterparts.Furthermore,studieshaveshownthatthereareoftenlong-termeffectsofboxingItislikelytothreatenpersonalsafetyofpeople.Boxingisapopularsportthatmanypeopleseemtobefascinatedby.Newspapers,magazinesandsportsprogrammesonTVfrequentlycoverboxingmatches.Professionalboxersearnalotofmoney,andsuccessfulboxersaretreatedasbigheroes.Itseemstomethatpeople,especiallymen,finditappealingbecauseitisanaggressivesport.Whentheywatchaboxingmatch,theycanidentifywiththewinningboxer,andthisgivesthemthefeelingofbeingawinnerthemselves.Itisafactthatmanypeoplehavefeelingofaggressionfromtimetotime,buttheycannotshowtheiraggressionintheireverydaylives.67However,thereisanegativesidetoboxing.68Althoughboxerswearglovesduringthefights,andamateurboxersevenhavetowearhelmets,therehavefrequentlybeenaccidentinbothprofessionalandamateurboxing,sometimeswithdramaticconsequences.Boxershavesufferedfromheadinjuries,andoccasionally,fightershaveevenbeenkilledasaresultofbeingknockedoutinthering.69Sometimesevenifaboxerhasneverbeenknockedout,hemighthavesufferedseverebraindamagewithoutknowingit.70IthinkitwouldbebetteriflesstimewasgiventoaggressivesportsonTV,andwewelcomedmoremenandwomenfromnon-aggressivesportsasourheroesandheroinesinoursociety.Ibelievethattheworldisaggressiveenoughalready!Ofcourse,peoplelikecompetitivesports,andsodoI,butIthinkthathittingotherpeopleinanaggressivewayisnotsomethingthatshouldberegardedasasport.SummaryWritingDirections:Readthefollowingpassage.Summarizethemainideaandthemainpoint(s)ofthepassageinnomorethan60words.Useyourownwordsasfaraspossible.Studentswhohaveusedelectroniccigarettesbythetimetheystartninthgradearemorelikelythanotherstostartsmokingtraditionalcigarettesandothertobaccoproductswithinthenextyear,accordingtoanewstudyfundedbytheNationalInstitutesofHealth.Electroniccigarettes,ore-cigarettes,delivernicotinetothelungsbyheatingaliquidsolutionthatcontainsnicotineandotherchemicalstoproduceaspraythattheusertakesin.AspartofasurveyofsubstanceuseandmentalhealthamonghighschoolstudentsinLosAngeles,thestudycomparedthestartoftobaccouseamong222studentswhohadusedecigarettes,butnotanyothertobaccoproducts,and2,308whohadneitherusede-cigarettesoranyothertobaccoproductswheninitiallysurveyedatthestartofninthgrade.The2,530studentswhoinitiallyreportedneverusingtobaccounderwentfollow-upassessmentsaftersixand12months.Studentswereaskedaboutlifetimeandpastsix-monthuseofe-cigarettesoranyotherformsoftobaccoproducts.Duringthefirstsixmonthsafterbeingsurveyed,30.7percentofthosewhohadusedecigarettesstartedusingtobaccoproducts,suchascigarettes,andcigars,comparedtoonly8.1percentofthosewhohadneverusede-cigarettes.Overthefollowingsixmonthsleadingintothestartof10thgrade,25.2percentofe-cigaretteusershadusedtobaccoproducts,comparedtojust9.3percentofnonusers.“Whileteentobaccousehasfalleninrecentyears,thisstudyconfirmsthatweshouldcontinuetocloselywatchteensmokingpatterns,”saidNIDADirectorNoraD.Volkow,M.D.“Parentsandteensshouldrecognizethatalthoughe-cigarettesmightnothavethesameharmfuleffectsofregularcigarettes,theydocarryariskofaddiction.”“Recreationale-cigaretteuseisbecomingincreasinglypopularamongteenswhohaveneversmokedtobacco,”saidAdamM.Leventhal,Ph.D.,thefirstauthoronthestudy.“Whilewecannotconcludethate-cigaretteusedirectlyleadstosmoking,thisresearchraisesconcernsthatrecentincreasesinyouthe-cigaretteusecouldultimatelyleadtothespreadofsmoking-relatedillness."TranslationDirections:TranslatethefollowingsentencesintoEnglish,usingthewordsgiveninthebrackets.在線課程是否能滿足不同層次學(xué)生的需求，尚不明朗。(it)在抗擊病毒的斗爭中，中國會給予受到感染的國家盡可能多的幫助。(offer)極目遠(yuǎn)眺，山外有山，令人贊嘆不已。(view)從長遠(yuǎn)角度看，各國間