专题04科学与技术篇(二)(原卷版)

专题04科学与技术篇（二）Text31（2023秋·广东广州·高一广州市第十三中学校考期末）ManytravelersarefamiliarwiththeUNESCO’sWorldHeritageList(世界遗产名录)However,lessisknownabouttheorganization’sListofWorldHeritageinDanger.Itcurrentlyspecifies53WorldHeritagesitesunderthreatof“seriousandspecificdangers”duetofactorssuchasclimatechange,armedconflict,anddevelopmentpressures.Theaccelerateddegeneration(退化)oftheseculturaltreasuresisarealitythatshouldconcerntheworld,sincetheyoungergenerationmaynothavetheopportunitytovisitthem.Forthisreason,insurancecompanyBudgetDirect,andNeoMamStudios,acreativestudiobasedintheUK,havestartedaproject,creatingaseriesofGIFstorepairWorldHeritagesitesanddemonstratewhattheseruinswouldhavelookedlikeiftheyhadbeenprotected.Drawingattentiontositesatrisk,theprojectaimstogiveeveryonetheopportunitytovisitthesesitesvirtually(虚拟的).Itstartedwithin-depthresearcharoundthesitesontheListofWorldHeritageinDanger.Basedontheresults,theteammadeaselectionaccordingtotwomaincriteria:First,theywereman-madeplaces.Second,theystillhadstandingelements.Focusingontheselectedsites,theteamworkedwitharchitectsJelenaPopovicandKeremcanKirilmazandindustrialdesignerErdemBatirbektoresearchandillustratesixoftheselegendarylocations.InthisseriesofGIFs,sixsitesaredigitallyrepairedtotheirformerglory.TheyincludeHatrainIraq,LeptisMagnainLibya,PalmyrainSyria,Portobelo-SanLorenzoinPanama,NanMadolintheFederatedStatesofMicronesiaaswellastheOldCityofJerusalemanditsWalls.Timedoesnotstandstill,andneitherdoestechnology.Thankstothesetechnologies,wecantravelvirtually,withoutleavinghome,tothoseplacesthat,whatevertheirfuturemaybe,willalwaysbepartofthecollectivememory.1．WhydidtheteamdeveloptheprojectGIFs?A．TheyarecuriousaboutsomeWorldHeritagesites.B．TheListofWorldHeritageinDangerisnotwell-known.C．TheyoungergenerationdesiretovisitWorldHeritagesites.D．YoungpeoplemaymissthechancetovisitsomeWorldHeritagesites.2．WhatkindofendangeredWorldHeritagesitescouldbechosenforthisproject?A．Naturalsitesthathadstandingelements.B．Man-madesitesthathadstandingelements.C．Naturalsitesthatweredestroyedcompletely.D．Man-madesitesthatweredestroyedcompletely.3．Whatcanwelearnfromthelastparagraph?A．Moresitesonthelistwillberepaired.B．TheWorldHeritagesiteswillbeindanger.C．Technologiesmakevirtuallytravellingmoreconvenient.D．TechnologieshelppeoplevisitWorldHeritagesitesvirtually.4．Whatisthepassagemainlyabout?A．AninsurancecompanysavingWorldHeritageSites.B．UNESCOprotectingWorldHeritageSites.C．WorldHeritageSitesatriskofdisappearing.D．EndangeredWorldHeritageSitesrebuiltinGIFs.Text32（2023秋·广东广州·高一广州市第七十五中学校考期末）Keepingourenvironmentclean,especiallyourwaterways,issomethingeveryonecanagreeon.That’swhypeopletakepartinthebeachcleanupandworksohardtoremoveplasticsfromouroceans.Butsometimesthingsthatcometopasscanundoalloftheseefforts.Oneoftheworstthingsthatcanhappentoouroceansisanoilspill.Cleaningupafteraspillhasalwaysbeenacostlyandlastingprocessthatoftenharmswildlifeandfurtherdamagestheseaenvironment.ButnowresearchersatNorthwesternUniversityhavedevelopedasmartspongetocleanupoilspillsintheocean.Thisnewmethodisdesignedtoabsorboil,leavingthecleanwaterbehindwithoutinfluencingseawildlife.Previousmethodsincludedremovingoilfromthesurface,burningoil,andusingabsorbentmaterials.“Eachmethodhasitsowndisadvantagesandnoneofthemaregreensolutions,”Gondwana,aseniorresearchassociatesaid.“Ourspongecanabsorbthesespillsinamoreeconomic,efficientandeco-friendlymannerthananyoftheprevioussolutions.”Thesecretofhowthenewspongecanselectivelyabsorbonlytheoilliesinacoatingofaspecialmaterialthatcanbeusedtocoveranyordinarysponge.Allyouhavetodoisapplyathincoatingofthematerialtothespongeandletitdrybeforeuse.It’sreallysimpletochangeanordinaryspongeintoasmartsponge.Andthenewspongecanabsorbupto30timesitsownweightinoil.Moreover,itisreusableuptoadozentimes.Theresearchersevencameupwithaplantobetterexploitthenewsponge.Gondwanasaid,“Thenewspongewillcomeinlargesheetsthatarerolled.Whiletherearenolimitationsinthesize,awidthof2-3feetisenough.Thenewspongecanbeusedonabeachorintheoceanafteranoilspill.”5．Howdoestheauthorconsidertheworkofcleaningupoilspills?A．Difficultandmeaningless. B．Challengingandcostly.C．Significantbutfruitless. D．Boringbutrewarding.6．WhichofthefollowingmayGondwanaagreewith?A．Traditionalsolutionscontributealottoseaprotection.B．Thepreviousmethodsofcleaningupoilspillsareunsatisfying.C．Oilpollutionisthemainreasonfortheunbalancedecosystemintheocean.D．Thenewmethodfailstomeettherequirementofagreenenvironment.7．Whatcanweinferaboutthenewsponge?A．Itmakesnouseoftheordinarysponge. B．Itreliesonwatertoformacoating.C．Itenjoysexcellentabsorptioncapacity. D．Itdoessomeharmtoseawildlife.Text33（2023秋·北京·高一北京市十一学校校考期末）Astechnologyisdevelopingrapidly,wecanactuallybuildVRheadsetsthatmeethighrequirements.TheinterestinVRrises,sodoestheinterestincreatingnewmediatobeexperiencedinusingVR.Journalismisamediumbuiltonrelevance.Journalistsarealwaysfindingnewmeanstotellstoriesandreportnews.Itisagoldmineforstorytelling.Whatbetterwaystotellastorytosomeonethantoputthemrightinthecenterofit?PeoplearealreadymakinguseofVRinnews.CreativedirectorSpikeJonzeandvisualartistChrisMilkputviewersatthesceneoftheMillionsMarchprotestinNewYorkinDecember,2014.TheUniversityofSouthernCaliforniacreated“ProjectSyria,”whichallowsviewerstoexperiencethebombingofacrowdedneighborhoodandvisitarefugeecampinthewar-tomcountry.Thesearejustafewexamplesofagrowingnumberofprojectsthatareoutthere.VRisapowerfultoolforjournalists.Theconsumerisn’tjustreadingorwatchingsomethingplayout;they’reexperiencingit.Theimmersive(沉浸式的)natureofVRallowspeopletoconnectwiththesubjectmatteronamuchdeeperlevelthanjustreadingaboutit.Theexperienceisemotional,speakingmoretoourinstinct(本能)thanourintellect(智力).Thereareawiderangeofpossibilitiesforstorytellinghere,andanystorytellerwantingtodosomethingmoreinterestingthantheirpeersshouldsurelybeconsideringthesheerpowerofVR.ThequestionofVR,though,isnothowpowerfulitis.Thatisobvious.ThequestionofVRisoneofviability(可行性)andavailability.Tellingstoriesmustbeeasytodo,andaccesstothosestoriesmustbereadilyavailable.ThisisthebiggestchallengethatVRfaces.IfthetoolstotellastorywithVRaren’teasytopickupandlearn,VRwillfail.IfVRtechnologyisn’tbothtop-of-the-lineandaffordable,VRwillfail.“IthinkthatcurrentVRtechnologyisprettyexclusiverightnow,butit’sverypromisingthatitwillnotbeaprobleminthelongrun,”saidThomasHallaq,assistantprofessorofjournalismandmasscommunications.“We’reseeingmoretechnologybecomeaccessible,andmorepeoplehavingaccesstothattechnology.Justlookatsmartphones.”IfthetechnologyiswidelyavailableandcompanieslikeOculus,Samsung,HTCandValvecanovercometheinherentdifficulties,VRwillsucceedinbeingadesirablemeansofstorytelling.Likeradio,TVandtheInternetbeforeit,VRwillchangethewaywetellstories.8．WhyisVRconsideredapowerfultoolforjournalism?A．Becauseitisamediumbuiltonrelevance.B．Becauseitisverypopularandinteresting.C．Becauseitallowspeopletoexperiencethenewspersonally.D．Becauseitisanexclusivelynewtoolintellingnewsstories.9．Accordingtothepassage,whatisthebiggestchallengeVRisfacing?A．Whetheritiseasilyaccessibletopeople.B．Howpowerfulandinterestingitcanbe.C．WhetherqualifiedVRheadsetscanbebuilt.D．Whatnewwayspeoplewillfindtoreportnews.10．What’stheauthor’sattitudetowardsthefutureofVRtechnology?A．Neutral. B．Positive. C．Negative. D．Concerned.11．Whichofthefollowingisthebesttitleforthepassage?A．TheChallengesofVirtualRealityB．TheWidePopularityofVirtualRealityC．TheFutureofStorytelling—VirtualRealityD．TheDevelopmentofVirtualRealityintheFutureText34（2023秋·广东广州·高一广州市花都区邝维煜纪念中学校考期末）Whilefacialrecognitiontechnologycontinuestopromotemanyaspectsofhumanlife,it’snowbeingappliedtoaidtheprotectionofgiantpandas,XinhuaNewsAgencyreportedon6January2022.AnaturereservehasbuiltanAI-enabledvideomonitoringsystemtobetterprotectgiantpandas.Installedwith300infrared(红外线)cameras,themonitoringsystemhelpsensurethehealthandsafetyof110wildgiantpandasthere.Itwasputintooperationtwoyearsago,andhascapturednumerousphotosandvideosofpandasengagedinactivitiessuchaseating,restingandfightingformates.Itprovidesscientificdatatohelpusgrasppandas’livingconditionsandestablishconservationstrategies.Moreimportantly,itachievesreal-timemonitoringofthereservesothatwecandiscernthethreatstothewildlifeasearlyaspossible.Arecentstudyfoundthefacialrecognitionsystemcanautomaticallyrecognizevariouswildanimalscaughtininfraredcameras,allowingresearcherstocollectdataongiantpandaswhilestayingindoors.It’sshownthatbyequippingtheAI-aidedsystemtoretainthefiledphotosofgiantpandas,weobtaina98%successrateforspeciesrecognition.Itssuccessrateofrecognizingotherwildanimalscantop80%.In2021alone,thismonitoringsystemcaptured2,896photosofgiantpandasandotherrareanimalsandfilmed3,218secondsoffootage,showcasingthereserve’ssoundecologicalenvironmentaswellasagradualriseinpandapopulationthere.Headofthereserve’sadministration,LiuXingming,saidresearchersusedthesystemnotonlytoobservethedynamicsandhealthofthegiantpandapopulationbutalsotolearnaboutchangesinthenaturalsurroundingsoftheirhabitat.“Themonitoringsystemhasenabledsystematic,scientific,andintelligentconservationofwildlife,”headded.“However,itisexpectedtobefurtherimprovedandoptimizedinthenearfuture.”12．Whatdoestheunderlinedword“discern”meaninparagraph2?A．Solve. B．Affect. C．Detect. D．Attach.13．Whatcanbeinferredaboutthenewtechnologyfromthestudy?A．Itcontributestospeciesdatacollection. B．Itmakespandapopulationriserapidly.C．Itpreciselyrecognizesanyspecies. D．Itunderstandspandas’facialappearance.14．WhatisLiuXingming’sattitudetothefacialrecognitionmonitoringsystem?A．Critical. B．Ambiguous.C．Objective. D．Conservative.15．Whichofthefollowingcanbethebesttitleforthetext?A．PandaFacialRecognitionUsingDatabaseB．AITechnologyforBetterPandaProtectionC．FunctionsofFacialRecognitionTechnologyD．ABreakthroughinVideoMonitoringSystemText35（2023秋·江苏徐州·高一统考期末）Doyougotothegymtostrengthenyourbody?Well,youmaybemissingoutontrainingsomevitalmuscles-theonesinvolvedinbreathing.Newresearchshowsthattrainingthesemuscleseachdaycanreducehighbloodpressureandpromotehearthealth.“Themusclesweusetobreatheatrophy,justliketherestofourmuscles,aswegetolder,”explainsDanielCraighead,aphysiologistattheUniversityofColoradoBoulder.Totestwhathappenswhenthesemusclesaregivenagoodworkout,heandhiscolleaguesenlistedhealthyvolunteersaged18to82totryadailyfive-minutetechniqueusingaresistance-breathingtrainingdevicecalledPowerBreathe.Thedeviceforcesthepatienttousetheirbreathingmusclestopushandpullairthroughit,makingthemstronger.“Wefoundthatdoing30breathsperdayforsixweekslowersbloodpressurebyabout9mmHg(毫米汞柱),”Craigheadsays.Andthosereductionsareaboutwhatcouldbeexpectedwithtraditionalexercise,hesays-suchaswalking,runningorcycling.Theimpactofasustained9mmHgreductionissignificant,saysMichaelJoyner,aphysicianattheMayoClinicwhostudieshowthenervoussystemregulatesbloodpressure.“That’sthetypeofredactionyouseewithabloodpressuredrug”Joynersays.Researchhasshownmanycommonbloodpressuremedicinesleadtoabouta9mmHgreduction.Thereductionsarehigherwhenpeoplecombinemultiple(多种的)medicines,buta10mmHgreductionrelatestoa35%dropintheriskofstrokeanda25%dropintheriskofheartdisease.“Ithinkit’spromising.”Joynersaysabouttheprospectsofintegratingstrengthtrainingforthemusclesusedtobreatheintopreventivecare.Itcouldbebeneficialforpeoplewhoareunabletodotraditionalexercise,hesays,andthesimplicityisappealing,too,givenpeoplecaneasilyusethedeviceathome.However,thetechniqueisnotintendedtoreplaceexercise,hecautions,ortoreplacemedicationforpeoplewhosebloodpressureissohighthatthey’reathighriskofhavingaheartattackorstroke.Instead,Craigheadsays,“itwouldbeagoodadditiveintervention(干预)forpeoplewhoaredoingotherhealthylifestyleapproachesalready.”16．Whatdoestheunderlinedword“atrophy”meaninParagraph2?A．Runeasily.B．Agegradually.C．Calmedslightly.D．Relaxfrequently.17．Whichisineffectivetoa9mmHgreductiononbloodpressure?A．Multiplemedicines.B．Breathingtraining.C．Bloodpressuredevices.D．Traditionalexercise.18．What’sJoyner’sattitudetotheprospectsoftrainingthemusclesusedtobreathe?A．Objective.B．Negative.C．Indifferent.D．Supportive.19．Whatisthebesttitleforthetext?A．TheRelationshipBetweenTrainingandHeartHealthB．ThePotentialIntegrationofTrainingandMedicinesC．MedicinesWorkinControllingHighBloodPressureD．BreathTrainingHelpstoLowerHighBloodPressureText36（2022秋·宁夏中卫·高一中卫中学校考期末）Breathingissomethingyoudoalldaylong,withouteventhinkingaboutit.However,youmightbedoingitwrong.Researchshowsthatthewayyoubreatheaffectstheamountofoxygen(氧气)youtakein，aswellashowyouthinkandfeel.Sowhichisit?Doyoubreathethroughyournoseoryourmouth?Somehealthexpertsrecommendpeoplebreatheinthroughthenoseandoutthroughtheirmouth.Otherssaythatpeopleshouldjustfocusonbreathingeasily,payingnoattentiontotheirmouthornosepreference.Butmouthbreathinghasalsobeenconnectedwithbadbreath,highbloodpressureandbadteeth.Nosebreathingmayimprovehowmemoriesarestabilized(稳定)inourbrains,accordingtoSwedishresearchers.Duringthestudy,participantssmelled12differentsmellsandtheywereaskedtobreatheeitherthroughtheirnoseormouthforanhourafterwards.Then,theywerepresentedwiththeoriginalsetofsmellsandanewset.Thosewhosmelledwiththeirnoserememberedthesmellsbetter.Aresearchteamrecognizedthedifferencesinbrainactivitythathappenedwhensevenepilepsy(癫痫)patientsbreathedthroughthenoseorthroughthemouth.Theteamfoundthreeareasofthebrainwhereactivityisconnectedwithbreathing.Theseareasshowedmorechangesinbrainactivityonlywhenvolunteersbreathedinthroughtheirnoses.So,shouldpeoplebreathingthroughthemouthchangetheirbreathinghabits?Ifyou’rehappywiththewayyoubreatheandyouaren’texperiencinganyhealthproblems,beyourselfandjustkeepyourownway.Butifyouthinkitmightbetimeforachange,focusonbreathingthroughyournoseuntilitbecomesahabit.Itmighthelpyousurviveanemergency.20．Whatdoestheunderlinedword“it”inParagraph2referto?A．Yourlifestyle. B．Howyoubreathe.C．Howyouthinkandfeel. D．Theoxygenyoutakein.21．WhatdidSwedishresearchersfind?A．Nosebreathingmayimprovememory.B．Mouthbreathingcauseshealthproblems.C．Peoplebreathingthroughthenoseidentifysmellsdifficultly.D．Peoplebreathingthroughthemouthhaveagoodsenseoftaste.22．Whatistheeffectofnosebreathingaccordingtotheresearch?A．Ithelpsonetostayhealthy.B．Itcuresbadbreathandsnoring.C．Itmakesone’sbrainmoreactive.D．Itimprovesone’ssenseofsmell.23．Whatdoestheauthorthinkofnosebreathing?A．It’shardtogetusedto.B．It’ssuitableforeverybody.C．It’swhatpeoplehavetodo.D．It’swhatpeoplecanbenefitfrom.Text37（2022秋·宁夏中卫·高一中卫中学校考期末）Migratory(迁徙的)birdshaveanunusualabilitytolocatethemselves,findingtheirwayacrosssometimesthousandsofkilometersbetweenseasonalareas.Thosemigratorybirdsthattravelatnight,oftenalone,areespeciallyimpressive.Whileithasbeenknownthatbirdsusetheearth’smagnetic(磁性的)fieldforguidancesincethe1960s,thatexactsystemshaveremainedhardtounderstand.Seekingtounderstandthissensorysecret,researcherslookedatatypeofprotein,cryptochrome4(CRY4),foundinthelight-detectingcellsintheeyesofrobins(知更鸟),andcompareditsmagneticsensitivitytotheCRY4proteinfoundintwonon-migratorybirds—chickensandpigeons.Robinsaresmallandmuch-lovedbirds,seenassymbolsofEuropeanwinters,whichmigrateinresponsetofoodshortageinthecoldermonths.Inthestudy,researchersfoundspecificchangesassociatedwiththeCRY4proteininrob-insthatmayallowthemtosensemagnetismwithintheireyes,leadingthemtothinkitislikelythatrobinshavea“livingcompass”,andmaybeableto“see”theearth’smagneticfieldtolocatethemselves.Theresearchersexplainthatthisworksthroughasystembywhichtheproteinshowsalight-drivenchemicalreactionthatcausestheeffectsthatcanincreasemagneticsignals.Thishappensthroughaquantum(量子)phenomenoninwhichanoutsidemagneticfieldaffectschemicalreactionsbychangingthespinofweaklypairedelectrons.Thenewdiscoveryisexcitingfortheresearchers,offeringawindowintoasensoryworldwhichhumanscanonlyimagine,thoughtheresearchersadvisethatfurthertestingofCRY4intheireyesshouldbenecessarytofinallyprovewhetherthebirdscansensemagnetism.24．Whatcanwelearnaboutmigratorybirdsfromthetext?A．Theyonlymigrateatnight.B．Theyhaveagoodsenseofdirection.C．Theyarepuzzledbythemagneticfield.D．Theyuseinnerlighttofindwaysatnight.25．WhatisprobablythefunctionoftheCRY4proteininrobinsaccordingtothestudy?A．Towarnthemoffoodshortage.B．Toblockoutsignalsfromtheearth.C．Tokeepthemwarmincoldmonths.D．Tohelpthemsensemagneticproperties.26．Whatdotheresearchersofthestudythinkofthenewdiscovery?A．Ithardlymakessense.B．Itcontradictspublicopinion.C．Itneedstobefurtherproved.D．Itwillbeappliedtolightingsystem.27．Whichofthefollowingcanbethebesttitleforthetext?A．Robins’EyesMayHaveaBuilt-in“Compass”B．TurningoffLightsCanSaveMigratoryBirdsC．Robins:MigratoryBirdswiththeBestEyesightD．UseProteintoImproveMigratoryBirds’EyesightText38（2023秋·福建三明·高一统考期末）Technologyisdevelopingrapidly.AdeviceassmallasasmartphonenowhasmoreprocessingpowerthanrocketstotheMoononcehad.Newtechbringsmanyadvantages,makingourliveseasierandopeningupnewopportunities.Onepieceofkitthat’sbeenreallytakingoffrecentlyisthedrone(无人机).Thispilotlessminiaircraft,originallydevelopedforaerialphotography(航拍)andwars,isnowbringingusbenefitsclosertohome.Inthelastfewyears,techcompaniessuchasAmazon,AlphabetandUberhavepromisedusdeliverydronesbringinggoodstoourdoorstepsinamatterofminutes.However,progressindevelopingthemhasbeenslow.Dronesarehelpingtoconnectwithandenhancethelivesofpeopleinlonelylocations.IntheUK,theRoyalMailwants500dronestohelpdeliverthemailtofar-awaycommunities.Windracers,thecompanydevelopingthedrones,saytheycanflyinfogandproduce30%feweremissions(排放)thancomparablepilotedaircraft.AndinCoventryintheUK,constructionhasstartedonanairhub,whichwillactasabaseforpoliceanddeliverydrones.Dronescouldalsoplayapartinimprovingthehealthofmillionsofpeople.Forexample,writingforBBCFuturewebsite,HarrietConstabledescribesanunbelievabledevelopmentprojectbytheUniversityofSouthAustralia.Theplanisfordronestofinallybeabletosurveypopulationsfordiseasesbyreadingthebloodoxygenlevelsofhumansfromtheair.They’llalsobeabletoexamineotherimportantsigns,likecoughingandahightemperature.Itseemslimitlessforwhatdronetechnologycanachieve.Theonlythingthatsometimeskeepsitgroundedisregulation.JessicaBrown,agovernmentofficialsays:“Ifourskiesaretobecomeascrowdedasourstreets,airspacerulesneedupdatingtopreventaccidents.”Therearealsorelatedproblems,suchasnoisepollution.28．Whywasdronesoriginallydeveloped?A．Fortakingphotos. B．Fordelivering. C．Fortransporting. D．Forfarming.29．Theunderlinedwordinparagraph3canbereplacedby.A．change B．improve C．enrich D．worsen30．Howdoestheauthorintroducethebenefitsofdrones?A．Bystatingfacts. B．Bylistingdata. C．Bycomparison. D．Bygivingexamples.31．Whatcanbeinferredfromthelastparagraph?A．Rulesfordroneshaven’tbeenmade.B．Dronearenotallowedtodevelopwithoutrules.C．Thedevelopmentofdroneswillcausepollution.D．Theskiesarebecomingcrowdedbecauseofdrones.Text39（2023秋·吉林·高一吉林市田家炳高级中学校考期末）Allnetworkslike3Gand4Gwillbethingsofthepast,becausepeoplealreadyhaveaccessto5G.So,what’ssospecialabouta5Gfuture?Firstofall,itsdownloadspeedcanbeasfastas20GB/s,whichis100to200timesfasterthanthatof4G.Butwhat’smoreimpressiveis5G’slowdelayrate.Now,4Gtakesanaverageof200millisecondstosendandreceiveinformation.But5Gwillgetitdownto1millisecond.5Gisagreatbreakthrough(突破).It’sgoingtochangethewayequipmentconnectstotheInternet,andmoreimportantly,toeachother.Andself-drivingcarsmaybeoneofthebiggestbreakthroughstocomeoutof5G.Humanreaction(反应)timeis200milliseconds,yetwestillhaveaccidentseveryday.Theself-drivingcarunderthe5Gnetworkcouldreactandcommunicateitsreactiontohundredsofcarsaroundit,allwithin1millisecond.It’llplayagreatroleinpreventingcaraccidentsandcompletelyendingtrafficjams.5Gcanbenefitusinmanyotherways.Operationscouldbeperformedbyrobotscontrolledbyexpertsfromtheothersideoftheworld.Therefore,moreliveswillbesavedintime.Factoriescanbestaffedbyrobotsthatcancommunicatetheirtaskstoeachother,andtheycandomoreworkoverthe5Gnetwork.Asaresult,morelabourforceswillbefreed.However,5Gisnotperfect.5Gusesthemillimeterwaves,while4Gusesthe15-to40-centimeter-longwaves.Andshorterwavesgofastbutnotveryfar.Onthe4Gnetwork,thesignal(信号)cango10kilometers.Butthe5Gsignalcangoatmost300meters,anditcan’tevengothroughwallsorrain.So,whatdoesthatmean?Havingsuchashortsignaldistancemeansweneedtobuildalotofsignaltowersinthefuture.32．Howdoestheauthorintroduce5Ginparagraph1?A．Bygivingexamplesoftheusesof5G.B．Byreviewing5G’sdevelopmentfrom4G.C．Byprovidingsomebasicinformationof5G.D．Bymakingcomparisonsbetween4Gand5G.33．Whyareself-drivingcarsmentionedinparagraph2?A．Toexplaintheroleofself-drivingcars. B．Toprovetheimportanceof5G.C．Toshowtheadvantageof5G. D．Totelltheprogressofself-drivingcars.34．Whatdoestheunderlinedpart“bestaffedbyrobots”mean?A．Bebuiltbyrobots. B．Producemorerobots.C．Offeremployeesrobots. D．Haverobotsasworkers.35．Whatcanweknowaboutthe5Gsignal?A．Ituseslongerwaves. B．Itneedsmoresignaltowers.C．Ittravelsalongerdista