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选择性必修第四册UNIT12INNOVATION(一)Ⅰ.阅读理解A(★)(2022·全国乙,C)Canasmallgroupofdrones(无人机)guaranteethesafetyandreliabilityofrailwaysand,atthesametime,helprailwayoperatorssavebillionsofeuroseachyear?Thatistheverylikelyfutureofapplyingtoday’s“eyesinthesky”technologytomakingsurethatthemillionsofkilometresofrailtracksandinfrastructure(基础设施)worldwidearesafefortrainsona24/7basis.Dronesarealreadybeingusedtoexaminehigh-tensionelectricallines.Theycoulddopreciselythesamethingtoinspectrailwaylinesandothervitalaspectsofrailinfrastructuresuchasthecorrectpositionofrailwaytracksandswitchingpoints.Themoreregularlytheycanbeinspected,themorerailwaysafety,reliabilityandon-timeperformancewillbeimproved.Costswouldbecutandoperationswouldbemoreefficient(高效)acrosstheboard.Thatincludeshugesavingsinmaintenancecostsandbetterprotectionofrailwaypersonnelsafety.ItiscalculatedthatEuropeanrailwaysalonespendapproximately20billioneurosayearonmaintenance,includingsendingmaintenancestaff,oftenatnight,toinspectandrepairtherailinfrastructure.Thatcanbedangerousworkthatcouldbeavoidedwithdronesassistingthecrews’efforts.Byusingthelatesttechnologies,dronescouldalsostartprovidinghigher-valueservicesforrailways,detectingfaultsintherailorswitches,beforetheycancauseanysafetyproblems.Toperformthesetasks,dronesforraildon’tneedtobeflyingoverhead.Engineersarenowworkingonanewconcept:theraildronesofthefuture.Theywillbemovingonthetrackaheadofthetrain,andprogrammedtorunautonomously.VerysmalldroneswithadvancedsensorsandAIandtravellingaheadofthetraincouldguideitlikeaco-pilot.Withtheirabilitytoseeahead,theycouldsignalanyproblem,sothatfast-movingtrainswouldbeabletoreactintime.1.Whatmakestheapplicationofdronestoraillinespossible?A.Theuseofdronesincheckingonpowerlines.B.Drones’abilitytoworkathighaltitudes.C.Thereductionofcostindesigningdrones.D.Drones’reliableperformanceinremoteareas.2.Whatdoes“maintenance”underlinedinparagraph3referto?A.Personnelsafety. B.Assistancefromdrones.C.Inspectionandrepair. D.Constructionofinfrastructure.3.Whatfunctionisexpectedoftheraildrones?A.Toprovideearlywarning. B.Tomaketrainsrunautomatically.C.Toearnprofitsforthecrews. D.Toacceleratetransportation.4.Whichisthemostsuitabletitleforthetext?A.WhatFaultsCanBeDetectedwithDronesB.HowProductionofDronesCanBeExpandedC.WhatDifficultyDroneDevelopmentWillFaceD.HowDronesWillChangetheFutureofRailwaysBTimothywasexhaustedforheworkedextendedhours.Althoughearningalowwageandhandlingill-manneredcustomers,healwaysputservingthosewhosatathistableswellonthefrontburnerofhismind.Hewentabouthisdailydutiescarefully,puttingonasmilingfaceascustomerscomplainedaboutthefoodorquestionedthebill.Usuallyasnightdeepenedpreparingtoclosethebusiness,hewouldnoticeacoupleofcustomerswalkin,sitdownandorderdrinks.Mostofthecrewhadleftbyclosingtime,butTimothystayedtoserve.Eventually,thelastroundwasorderedandhegavethemthebill.Theminimumtipwassuggestedonthereceipt.“Tomorrowwillbebetter,”hemurmured.Butluckwouldn’talwayssmileonhim.Eveningapproaching,agroupofteenagerssteppedin.Thankfully,theywerepoliteandrespectful.Theircheerfulbehaviorbegantoaffecthim.Asalways,hedidhisbesttomaketheirdiningexperienceapleasantone.Timedraggedonandtheyfinishedtheirdrinks.Heplacedthebillonthetable,accompaniedwithsomecandies.Thegroupplacedtheirnotesonthereceiptandleftsmiling.Whenhereturnedtoclearthetable,hewasastonished.Atipof$3wassittingthere,staringathim,buttheirtotalbillamountedto$100.He’dgoneaboveandbeyondtoservethem.Howcouldtheybesorude?Laterthatweek,hebattledtobrushofftheawkwardmemories.Hearrivedatworkandexpectedittobelikeanyotherday,buttherewassomethingleftonthedeskforhim,atwohandwrittenletterfromtheteenagerswith$18attached,inwhichtheyexplainedtheywereunawareofhowtotipappropriatelyduetoitbeingtheirfirsttimeinthisbar.Everythingsuddenlymadesense.Timothythumbedupwhattheydidwithabiggrinandhewassomovedbytheirgesturethatheuploadedapictureofthelettersharingtheiradmirableefforts.Thereactionwasmorethanpositive.5.WhatdidTimothyfocusoninhisjob?A.Gettingmoretips. B.Workinglongerhours.C.Providingbetterservice. D.Beinganicercolleague.6.Whatmadetheteenagersleaveatipof$3?A.Dissatisfactionwiththedrinks. B.Ignoranceofthetippingculture.C.GratefulnesstoTimothy. D.Misunderstandingofthebill.7.WhichofthefollowingbestdescribesTimothy?A.Patientandhumorous. B.Positiveanddevoted.C.Generousandtolerant. D.Ambitiousandcreative.8.Whatcanwelearnfromtheteenagers?A.Onegoodturndeservesanother.B.Actionsspeaklouderthanwords.C.Apologiesmakeforharmony. D.It’sgoodtomakethingsright.CAmazinglyfortheBritish,wholovequeues,thereisnoformalline-up.Thebarstaffareskilledatknowingwhoseturnitis.Youarepermittedtotrytoattractattention,buttherearerulesabouthowtodothis.Donotcallout,tapcoinsonthecounter,orwavelikeadrowningswimmer.Donotsighorrollyoureyes.Andwhateveryoudo,donotringthebellhangingbehindthecounter.Thisisusedbythelandlordtosignalclosingtime.Thekeythingistocatchthebarworkers’eyes.Youcouldalsoholdanemptyglassorsomemoney,butdonotwavethemabout.Doadoptanexpectant,hopeful,evenslightlyanxiousfacialexpression.Ifyoulooktoocomplacent,thebarstaffmayassumeyouarealreadybeingserved.Alwayssay“please”andtrytoavoidsomeoftheBritishbarstaff’sannoyance.Theydonotlikepeopletokeepotherswaitingwhiletheymakeuptheirminds.Theydon’tlikepeoplestandingagainstthebarwhentherearealotofcustomerswantingforservice.AndtheydonotlikepeoplewhowaituntiltheendoftheorderandaskforsuchdrinksasGuinnessStoutwhichtakeconsiderablylongertopourthanotherdrinks.OneDutchtouristwhospentsixmonthsvisiting800ofBritain’s61,000barsandinterviewing50barworkersandmorethan1,000customerssaid,“Ican’tunderstandhowtheBritishevermanagetobuythemselvesadrink.”Buttheydo,andifyoufollowthesetipsyoushouldbeabletodoso,too.Speakingoftips,youshouldneverofferthebarstaffcash.Thecorrectbehavioristoofferthemadrink.Barspridethemselvesontheirequalatmosphere.Atipincashwouldbeareminderoftheirservicerole.However,theofferofadrinkisafriendlygesture.9.Whatdoestheunderlinedword“complacent”inparagraph1mean?A.Contented.B.Worried.C.Polite.D.Annoyed.10.Howshouldcustomersattractthebarstaff’sattention?A.Totapcoinsonthecounter.B.Toholdanemptyglassorsomemoney.C.Towavelikedrowningswimmers.D.Toringthebellhangingbehindthecounter.11.Whatdoesthewritersuggestpeopledoinbars?A.Correctbarstaff’smisbehaviors. B.Tipbarstaffincash.C.Offerpeoplepresentadrink. D.Helptomaintaintheequalatmosphere.12.Whichcolumnmightthepassagebetakenfrom?A.Health.B.Culture.C.Economy.D.Politics.Ⅱ.七选五(★)5Gmobiletechnologyhasofficiallybegunrollingoutacrosstheglobe,whichindicatesadynamicacceleration(加速)inourworldofconnectivity.Itpromotesoperationalcooperationtourismhasn’texperiencedbefore.1Thisisperceivedfromboththewaytheindustryoperatesandthesideofthetraveler.2It’sexpectedtoofferorganizationsawirelessnetworkthattransformsthewaypeopleandmachinesusedata.Unlikepreviousnetworkgenerations,5Gisnowbeingseenasnotjustaconsumerplatform,butaprimarycommunicationsplatformthatcanalsoprovidecloudconnectivityandedgeprocessingthatcanofferreal-timebusinessinsightsandautomatedresponses,andeventuallyintegratethebillionsofInternetofThings(物联网)devicesanddatathatareavailable.Astravelcompanieshavetransformedtheiroperationswithnewdigitalsystems,theirfocushasmovedfromthetechnologyitselftotheimprovedbusinessoutcomesandenhancedguestandpassengerexperiencesdrivenbythetechnology.3Withadva
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