新一代大学英语（第二版）视听说教程2（思政智慧版）课件 B2U3 Evolving technology

CONTENTS1iPrepare2iExplore13iExplore24iProduce5Pronunciation6Furtherlistening7AdditionallisteningCONTENTSWarmingupLearningobjectivesUNIT3Weliveinaneraofrapiddevelopmentdrivenbyscienceandinnovation.Technologyhastransformedeveryaspectoflife.Itnotonlyprovidespracticaltoolstoscientificexplorationbutalsooffersnewlensesthroughwhichtoexamineourcultureandhistory.Yet,astechnologyevolves,wemustalsoconsideritsbroaderimpacts.Howdoesitaffectdifferentgenerations?Whatopportunitiesarisefromrapidadvancements?Inthisunit,youwillexaminethepast,present,andfutureoftechnology,exploringitsbenefitsandsocialimpacts.UNIT3LearningobjectivesUponcompletionofthisunit,youwillbeableto:

describethetechnologyevolutioninrecentdecadesinferthemeaningofawordfromthecontextusethecorrectintonationinwh-questionsanalyzehowChinapreservesculturalheritagewithnewtechnologyholdadiscussionaboutsci-fitechnologythatmaybecomearealityUNIT3Warmingup

Workingroupsanddiscussthefollowingquestions.UNIT31Thepicturesbelowdepictrecenttechnologicalbreakthroughs.Whataretheirinfluencesonourdailylives?LunarexplorationMachinelearning

Self-drivingvehiclesWarmingup

Lunarexploration:LunarexplorationdeepensourunderstandingoftheMoonandtheearlyhistoryofthesolarsystem,whichhelpsscientistsbetterunderstandtheEarth-Moonsystemanditsinfluenceonourplanet.Thisknowledgeimprovesourunderstandingofnaturalphenomenasuchastidesandthelong‑termevolutionoftheEarth.Italsodrivesthedevelopmentofadvancedtechnologies,includingrobotics,remotesensing,andlife‑supportsystems.Manyofthesetechnologiescanalsofindpracticalapplicationsinfieldssuchasenvironmentalmonitoring,medicalequipment,andmaterialsscience.UNIT3Warmingup

Machinelearning:Machinelearningenablessystemstoperformcomplextasks–suchasimagerecognition,speechprocessing,andpredictiveanalysis–whichsupportsthedevelopmentofintelligentservicesandsmartdevicesusedineverydaylife.Fromabroaderperspective,machinelearningacceleratesscientificresearchandproblem‑solving.Ithelpspeopleprocesslargedatasetsanddiscoverpatternsthathumansmaymissinfieldssuchasmedicine,climatescience,andastronomy,leadingtonewdiscoveriesandsolutionstoglobalchallenges.UNIT3Warmingup

Self-drivingvehicles:Byusingsensorsandintelligentsystems,self-drivingvehiclescanminimizehumanoperationalerrors,reducedrivingfatigue,andimprovecommutingsafety.Withoptimizeddrivingpatternsandcoordinatedtrafficmanagement,theycanreducetrafficcongestion,lowerfuelconsumption,anddecreasecarbonemissions.Inaddition,self-drivingcarscanincreasemobilityformanypeople,includingelderlypeople,individualswithdisabilities,andothersunabletodrive,offeringgreaterindependenceandsocialinclusion.UNIT3Warmingup

Workingroupsanddiscussthefollowingquestions.UNIT32Doyouknowofotherimportanttechnologicalbreakthroughsinrecentyears?Whataretheyandaretheylikelytoreshapeourlives?Geneediting:Geneeditingenablesthedevelopmentofcropsthataremorenutritious,drought-resistant,andresilienttopestsanddiseases,helpingimproveglobalfoodsecurityandagriculturesustainability.Geneeditinginmedicinemayallowscientiststotreatorevencuregeneticdiseases,developmoretargetedtherapies,andimprovepublichealthinthelongterm.Warmingup

5Gnetworks:Withultra-fastandlowlatencycommunication,5Gnetworksenablereal-timeapplicationssuchasremotesurgery.Italsosupportsthedevelopmentofsmartcitiesbyconnectingeverythingtogether,includingtransportationsystems,energynetworks,andpublicservices.GenerativeAI:GenerativeAInotonlyenablesindividualstocreatecontentsuchastext,images,music,andvideosmoreeasily,butalsoenhancesefficiencybyautomatingroutinetasks,assistingwithresearchandanalysis,andsupportingdecision-making.UNIT3Warmingup

Commercialspaceflight&Reusablerockets:Commercialspaceflightandreusablerocketsdramaticallyreducethecostofaccessingspace,makingsatellitedeployment,scientificresearch,andspace‑basedservicesmoreaccessible.Thesetechnologiesalsoopenthedoortospacetourismandlong‑termhumanexplorationofspace,whilefosteringabroader“planetaryperspective”thatencouragesglobalcooperationandgreaterawarenessofissuessuchasclimatechangeandtheEarth’sfragileenvironment.UNIT3CONTENTSPassageConversationNewsreportsUNIT3Wordsandexpressionsobstaclen.

阻碍；障碍sensorn.

传感器；感应装置ListeningandunderstandingUNIT3ConversationListeningandunderstandingNowadays,wecanseeunmannedrobotsordronessendpackages,whichmakesourlivesmoreconvenient.NowListentotheconversation,thenchoosethebestanswertoeachofthequestionsyouhear.1A.Theoperationofdeliverydrones.B.Thecostofrobotdeliveryservices.C.Challengesforunmanneddelivery.D.Thepotentialofunmanneddelivery.1Q:Whatisthemaintopicofthediscussion?√ConversationUNIT3ListeningandunderstandingNowadays,wecanseeunmannedrobotsordronessendpackages,whichmakesourlivesmoreconvenient.NowListentotheconversation,thenchoosethebestanswertoeachofthequestionsyouhear.2A.Schoolsandfactories.B.Farmlandandwarehouses.C.Hospitalsandremotevillages.D.Shoppingmallsandparkinglots.1Q:Accordingtotheman,wherecouldunmanneddeliverybeusedbesidesrestaurants?√ConversationUNIT3ListeningandunderstandingNowadays,wecanseeunmannedrobotsordronessendpackages,whichmakesourlivesmoreconvenient.NowListentotheconversation,thenchoosethebestanswertoeachofthequestionsyouhear.3A.Badweatherconditions.B.Limiteddeliverydistance.C.Highenergyconsumption.D.Complexuserinstructions.1Q:Whatchallengeforunmanneddeliveryismentionedintheconversation?√ConversationUNIT3ListeningandunderstandingNowadays,wecanseeunmannedrobotsordronessendpackages,whichmakesourlivesmoreconvenient.NowListentotheconversation,thenchoosethebestanswertoeachofthequestionsyouhear.4A.Withremotemanualcontrol.B.UsingsensorsandAItechnology.C.Throughspecificexclusiveroutes.D.Usinganadvancedcamerasystem.1Q:Howcandeliveryrobotsavoidobstaclesaccordingtotheconversation?√ConversationUNIT3ListeningandunderstandingListentotheconversationagainandfillintheblankswithwhatyouhear.1Manyrestaurantsareusingrobotsfordeliverynow.It’sfastand__________.2Astechnologyimproves,maybefuturedroneswillbe_________andstrongertoaddresschallenges.3It’ssoimpressivethatsomerobotsevenhavecamerastorecognize____________.4Whilemanydeliveriescouldbecomeunmanned,humansmightstillhavetodealwith_________.2convenientsmarterConversationtrafficlightsemotionalUNIT3ListeningandunderstandingScriptConversationUNIT3Lily:Look,Sam!Thatrobotisbringingourfood.That’ssocool!Sam:Yeah,manyrestaurantsareusingrobotsfordeliverynow.It’sfastandconvenient.Lily:Exactly.I’vealsoseendronesdeliveringpackagesinsomeareas.Doyouthinkunmanneddeliverywillbecomemorecommon?Sam:Definitely.It’snotjustfoodandpackages–imaginedeliveringmedicinesandemergencysuppliestohospitalsorremotevillages.Lily:Thatwouldsavealotoftime.Butwhataboutbadweather?Canrobotsordroneshandleit?Sam:Goodquestion.Heavyrainorstrongwindsmightbeachallenge,butListeningandunderstandingScriptConversationUNIT3technologyisimproving.Maybefuturedroneswillbesmarterandstronger.Lily:Andwhatiftherobotcomesacrossanobstacle,likeaparkedcar?Sam:TheyusesensorsandAItoavoidobstacles.Someevenhavecamerastorecognizetrafficlights.Lily:That’simpressive!So,doyouthinkonedayalldeliverieswillbeunmanned?Sam:Whilemanydeliveriescouldbecomeunmanned,humansmightstillhavetodealwithspecialcases.Thefuturewillbemoreautomatedforsure.Lily:Can’twaittoseethat!Let’strythefood–hopefully,therobotdidn’tshake

ittoomuch!Sam:(Laughs)Right!Role-playRole-playthesituation.3Step1Readthescenariobelowandthinkaboutwhatyouwanttoaskorshare.DiscussyourinitialideaswiththeAItutoronUcampus.Youandyourfriendaretalkingaboutaproposaltointroducedeliveryrobotsattheschoolcafé.Youwanttoconsiderbothconvenienceandthecampusexperience.Inyourconversation,discussandagreeon:thetasksthatrobotswoulddoandhowtheymightimproveefficiencytheconsofrobots(e.g.technicalobstacles,nohumaninteraction)thepotentialimpactsonthecaféandthecampusConversationUNIT3Role-playConversationStarttheconversationwiththeAItutor.Reviewthereal-timefeedbackfromtheAIspeakingtoolaftertheconversation.Step2Step3UNIT3StudentA:Hi!Ijustheardthatthecaféwhereyouworkmightstartusingrobotsforfooddelivery.Isthattrue?StudentB:Yes,it’strue.StudentA:Howdoyoufeelaboutit?StudentB:Ithinkitcouldbeapositivechange.Forusworkers,itwouldmeanlesstimespentrunningordersaround.Wecouldfocusonpreparingthefoodandmakingsureeverythingisfreshanddelicious.Besides,robotsaretireless.Theywon’tslowdownduetofatigue.StudentA:Iseeyourpointaboutefficiency,andI’masupporteroftechnology.Role-playConversationUNIT3Buthonestly,theideaworriesmeabit.Itmaymakeourcampusfeellessfriendly.Arobotcan’tofferasmileorrememberaregularcustomer’snamelikeapersoncan.StudentB:That’safairconcern.However,thegoalisn’ttoreplacehumancontactentirely.You’dstillinteractwithusatthecounter.Therobotwouldonlyhandlethefinalstep–carryingtheordertoyourtable.StudentA:Thatsoundsreasonable.ButIhaveanotherworry:ifyouarebusypreparingfoodanddonotdirectlydeliverit,howwillyounoticeifacustomerneedshelpattheirtable?Forexample,ifIreceivemyorderandthenrealizeIneedanextranapkinoraspoon?Role-playConversationUNIT3StudentB:That’sagoodpoint.We’llkeepaneyeonthediningareaandrespondtoanyrequestsrightaway.StudentA:OK,Igetit.Ifitmeansbetterfood,lessburdenonthestaff,andthepreservationofinterpersonalcommunication,I’dbewillingtogiveitatry.StudentB:Great!I’mreallygladtohearthat.Wevalueyoursupportbecausewe’reaimingforabalancethatbenefitseveryone.Butletmeknowifthere’sanyproblem!Role-playConversationUNIT3Wordsandexpressionsmotorn.

马达；发动机surpassvt.

超过；胜过consumern.消费者ListeningandunderstandingUNIT3PassageUNIT3PassageListeningandunderstandingChinahasachievedremarkablesuccessinthefieldofnewenergyvehicles(NEVs).Howdoesitmanagetodoso?NowListentothepassage,thenchoosethebestanswertoeachofthequestionsyouhear.1A.Theymeetstrictenvironmentalregulations.B.Theyhaverelativelyfewinternationalcompetitors.C.Theyprovidefashionableandpersonalizeddesigns.D.Theyhaveadvancedtechnologyandattractiveprices.1Q:WhatisthemainfactorforthepopularityofChina’sNEVsintheinternationalmarket?√UNIT3PassageListeningandunderstandingChinahasachievedremarkablesuccessinthefieldofnewenergyvehicles(NEVs).Howdoesitmanagetodoso?NowListentothepassage,thenchoosethebestanswertoeachofthequestionsyouhear.2A.Batteries,AItechnology,andvehicledesign.B.Batteries,motors,andelectroniccontrolsystems.C.Motors,lightmaterials,andself-drivingtechnology.D.Engines,AItechnology,andelectroniccontrolsystems.1Q:WhatarethecoretechnologiesthatNEVsrequire?√UNIT3PassageListeningandunderstandingChinahasachievedremarkablesuccessinthefieldofnewenergyvehicles(NEVs).Howdoesitmanagetodoso?NowListentothepassage,thenchoosethebestanswertoeachofthequestionsyouhear.3A.Over12million.B.Over16million.C.Over24million.D.Over30million.1Q:HowmanynewNEVsweresoldinChinain2025?√UNIT3PassageListeningandunderstandingChinahasachievedremarkablesuccessinthefieldofnewenergyvehicles(NEVs).Howdoesitmanagetodoso?NowListentothepassage,thenchoosethebestanswertoeachofthequestionsyouhear.4A.Large-scaleproduction.B.Advancedtechnologies.C.Ahugedomesticmarket.D.Stronggovernmentsupport.1Q:Accordingtothepassage,whathasreducedtheproductioncostofChina’sNEVs?√UNIT3PassageListeningandunderstanding2Listentothepassageagainandfillintheblankswithwhatyouhear.1EarlyinvestmentinkeytechnologieshasprovidedChina’sautomakerswithanopportunitytocatchupwithandsurpasstheir_________________.2Thecountryhasbuiltavast_________ofchargingstations,makingitmoreconvenientforNEVowners.3Growingpublicinterestin_______andsmarttechnologieshasfurtherboostedsales.4ThepriceofNEVsisexpectedtodecreaseinthefuture,makingthemmore__________forbuyers.globalcompetitorsnetworkgreenaffordableListeningandunderstandingUNIT3PassageScriptChinahasbecomeaglobalpioneerinnewenergyvehicle(NEV)production,accountingforoverhalfoftheworld’stotal.Whilemostaresolddomestically,China’sNEVsaregaininginternationalrecognitionfortheiradvancedtechnologyandcompetitiveprices.NEVsrequiredifferentcoretechnologiesfromtraditionalcars,includingbatteries,motors,andelectroniccontrolsystems.Thankstoearlyinvestmentinthesekeytechnologies,Chinesecompanieshavegainedadvantagesincostcontrolandqualityimprovement.ThishasprovidedChina’sautomakerswithanopportunitytocatchupwithandsurpasstheirglobalcompetitors.ListeningandunderstandingUNIT3PassageScriptChina’sNEVsuccessisalsodrivenbystrongconsumerdemandandgovernmentsupport.Thecountryhasbuiltavastnetworkofchargingstations,makingitmoreconvenientforNEVownerstochargetheirvehicles.Additionally,growingpublicinterestingreenandsmarttechnologieshasfurtherboostedsales.In2025,Chinasoldover16millionnewNEVs.Expertsbelievethatthereisstillasignificantpotentialforsalesgrowth.China’slarge-scaleNEVproductionhassignificantlyreducedcosts.ThepriceofNEVsisexpectedtodecreaseinthefuture,makingthemmoreaffordableforbuyersaroundtheworld.ListeningandunderstandingUNIT3PassageScriptWithitstechnologicaladvancementsandahugemarket,Chinaisbringingsignificantchangestoglobaltransportation.PassageThinkingandspeakingWorkinpairsanddiscussthefollowingquestions.31

Fromyourpersonalexperience,whatarethemainadvantagesofNEVs?Inwhatwayshavetheymadelifebetter?Frommypersonalexperience,themainadvantagesofNEVsaretheirlowrunningcostsandenvironmentalbenefits.Theyhavemadelifebetterbyreducingairpollutionincitiesandofferingamuchquieter,smootherridecomparedtotraditionalcars.LogontoUcampustosubmityouranswerandgetreal-timefeedback.UNIT3PassageThinkingandspeakingWorkinpairsanddiscussthefollowingquestions.32

TherapiddevelopmentofNEVsinChinaischangingthewaypeopletravel.Italsoshowshowtechnologyisshapingagreenerandsmarterfuture.Apartfromtransportation,whatotherareascannewenergytechnologiesbeused?Howaretheylikelytoinfluenceourdailylivesortheenvironment?Beyondtransportation,newenergytechnologiescanbewidelyusedinhomesandindustries.Forexample,inruralareas,solarpanelscanpowerhouseholdappliancesandchargehomeenergystoragesystems,allowingfamiliestorelymoreoncleanenergy.Inindustry,renewableenergysourcessuchassolarandUNIT3PassageThinkingandspeakingwindpowercanprovideelectricityforfactoriesandlargefacilities.Newenergytechnologiescanalsotransformbuildings,cities,andagricultureandwatersystems.Thisshiftcouldsignificantlylowerourdailyelectricitybillsandhelpprotecttheenvironmentbyreducingcarbonemissions.UNIT3NewsreportsUNIT3Wordsandexpressionsinstallvt.安装，设置（装备）summit

n.山顶acceleratev.（使）加快；（使）加速manufacturingn.制造；制造业PropernamesMountQomolangma珠穆朗玛峰Newsreport1NewsreportsNewsreport1UNIT3China’s5Gtechnologyhasdevelopedwithhigherspeedandfasterresponsetime,improvingmobilenetworksgreatlyandenablingnewbreakthroughsinothersectors.NowlistentoNewsreport1,thenchoosethebestanswertoeachofthequestionsyouhear.1A.China’s5Gdevelopmentandimpact.B.Theroleof5GinChina’sfutureindustries.C.Thecontributionof5GtoChina’seconomy.D.China’seffortstodevelopfaster5Gnetworks.1Q:Whatisthemaintopicofthenewsreport?√NewsreportsNewsreport1UNIT3China’s5Gtechnologyhasdevelopedwithhigherspeedandfasterresponsetime,improvingmobilenetworksgreatlyandenablingnewbreakthroughsinothersectors.NowlistentoNewsreport1,thenchoosethebestanswertoeachofthequestionsyouhear.2A.Byloweringthepricesofelectronicproducts.B.ByattractingmultinationalmanufacturerstoChina.C.Byenablingmoreefficientoperationsinkeysectors.D.Byaddingbillionstotheeconomyandcreatingjobs.1Q:Howhas5GtechnologyhelpedChina’seconomy?√NewsreportsNewsreport1UNIT3China’s5Gtechnologyhasdevelopedwithhigherspeedandfasterresponsetime,improvingmobilenetworksgreatlyandenablingnewbreakthroughsinothersectors.NowlistentoNewsreport1,thenchoosethebestanswertoeachofthequestionsyouhear.3A.10,000.B.19,000.C.90,000.D.100,000.1Q:HowmanysmartfactoriesdoesChinaplantobuildby2027?√Newsreport1Chinahasbuilttheworld’slargest5Gnetworkinjustfiveyears,withover4millionbasestationsinstalledacrossthecountry.Thispowerfulnetworknowprovides5GcoverageforallurbanareasandevenreachesthesummitofMountQomolangma,thehighestplaceonEarth.Theeconomicimpacthasbeensignificant.5Gtechnologyhasdirectlycontributedabout800billiondollarstoChina’seconomyandcreatedmillionsofnewjobs.Ithasacceleratedgrowthinkeysectorslikesmartmanufacturingandonlineeducation,transforminghowbusinessesoperate.NewsreportsUNIT3ScriptNewsreport1Currently,thereareover100,000examplesof5Gapplicationsacrossdifferentindustries.Thegovernmentaimstoestablish10,000smartfactoriesusing5Gby2027,helpingmanufacturersimproveefficiencyandreducecosts.Expertssay5GwillcontinuetochangehowpeopleliveandworkinChina,makingthingsfasterandmoreconnectedthaneverbefore.Recently,Chinahasstartedphasetwoofits6Gtechnologytrials.Thisisanimportantsteptowardfuturedevelopment.NewsreportsUNIT3ScriptNewsreportsUNIT3Newsreport2Wordsandexpressionsfrustratinga.

令人懊恼的；令人沮丧的engage

vi.(~with)与…建立密切关系NewsreportsUNIT3Technologyisadvancingrapidlyandbringinggreatconveniencetohumanlife.Howisitlikelytoinfluencethelivesofolderpeople?NowlistentoNewsreport2andchoosethebestanswertoeachofthequestionsyouhear.1A.Usingdigitaldevicescausesmemorylossinlateryears.B.Socialactivitieshavegreaterbenefitsthantechnologyuse.C.Olderdigitaldeviceuserstendtogetlessphysicalexercise.D.Olderdigitaldeviceusershadalowerriskofcognitivedecline.1Q:Whatisthemainfindingofthenewstudy?√Newsreport2NewsreportsUNIT3Technologyisadvancingrapidlyandbringinggreatconveniencetohumanlife.Howisitlikelytoinfluencethelivesofolderpeople?NowlistentoNewsreport2andchoosethebestanswertoeachofthequestionsyouhear.2A.Itischallengingandexciting.B.Olderusersneedaperiodofadaptation.C.Learningnewtechnologiesimprovesmemory.D.Itprovidesmentalexercisetokeepthebrainactive.1Q:Whatdidresearchersfindabouttheolderadults’experienceoflearningnewtechnologies?√Newsreport2NewsreportsUNIT3Technologyisadvancingrapidlyandbringinggreatconveniencetohumanlife.Howisitlikelytoinfluencethelivesofolderpeople?NowlistentoNewsreport2andchoosethebestanswertoeachofthequestionsyouhear.3A.Followingtheguidanceofexperts.B.StartingwiththehelpofAIassistants.C.Startingwithsimpleuseslikesharingphotos.D.Usingdigitaldevicestoplayeducationalgames.1Q:Whatistheexperts’recommendedapproachtointroducingtechnologytoolderadults?√Newsreport2Anewstudyshowsthatusingdigitaltechnologymayhelpprotectcognitivehealthaspeopleage.Researchersanalyzeddatafrom57studiesinvolvingover400,000adultswithanaverageageof69.Theyfoundthatthosewhouseddigitaltechnologyhada58percentlowerriskofcognitivedeclinecomparedtothosewhodidn’t.Manypeopleworrythatusingphonesandcomputersmighthurtourbrains,butthestudyfoundthatithasmultiplebenefitsforolderadults.“Technologyactuallychallengesyourbrainingoodways,”explainedoneresearcher.Learningtousenewdevicesmaybefrustratingatfirst,butthismentalexercisecouldhelpNewsreportsUNIT3ScriptNewsreport2keepthebrainactive.Expertssuggestthatfamilieshelpolderrelativesstartwithsimpletechnologyuses,likesharingphotosorsettingmedicationreminders.“Thekeyistostartwitheasytasksandbepatient,”theresearchersaid.Whilefurtherresearchisneeded,theevidenceclearlyshowsthatstayingengagedwithtechnologycanbeaneffectivewaytomaintainbrainhealthinlateryears.Forolderadultswhohaveavoidedtechnology,itmightbeworthtryingsomebasicfunctions.Theresearchindicatesthatevensmallstepsintothedigitalworldcouldmakeabigdifferenceinkeepingmindssharp.NewsreportsUNIT3ScriptNewsreport2NewsreportsUNIT3AtechnewsbriefingWorkinpairs.Chooseonetechnologicaldevelopmentthatyouhaveheardbeforeorareinterestedin.Prepareashorttechnologynewsupdateandpresentittotheclass.Yourreportmayincludewhatthetechnologyis,whatitcando,andhowitmayinfluencepeople’slives.AdditionalactivityGoodevening,andwelcometoourtechnologyupdate.Todaywe’relookingatbrain-computerinterfaces,atechnologythatallowsdirectcommunicationbetweenthehumanbrainandcomputers.Byusingsensorstodetectbrainsignals,thesesystemscantranslateaperson’sthoughtsintocommandsfordigitaldevices.NewsreportsUNIT3AdditionalactivityThistechnologyhasgreatpotentialinthemedicalfield.Forexample,peoplewithparalysismaybeabletocontrolacomputercursor,typemessages,oroperateawheelchairusingonlytheirthoughts.Researchersarealsoexploringhowbrain-computerinterfacesmighthelprestoremovementorcommunicationforpatientswithseriousneurologicalconditions.Althoughthetechnologyisstilldeveloping,manyscientistsbelieveitcouldgreatlyimprovethequalityoflifeforpeoplewithdisabilities.InferringthemeaningofawordfromthecontextWhenwehavedifficultyunderstandinganewwordinatext,usingcontextcluescanhelpus.Sometimes,thesurroundingwordsdirectlyexplainwhatthenewwordmeans.Othertimes,thecontextclueshelpusinferthenewword’smeaningthroughrelatedideas.MicrocourseUNIT3ViewingandunderstandingUNIT3ViewingandunderstandingWordsandexpressionsultimatea.（同类中）最出色的，最大的beamn.（肉眼不可见的光、能量等的）束，柱fractionn.一点；少量shedlighton（通过提供新信息等）使…清楚些subtlea.难以察觉（理解）的delicatea.微妙的；需要谨慎处理的conservationn.保存；保护PropernamesLeonardodaVinci列奥纳多·达·芬奇（意大利美术家、科学家和工程师）UNIT3ViewingandunderstandingTheMonaLisaisfamousforitsmysterioussmile.Butisitstillsomysteriousundertheexaminationofmoderntechnology?Nowwatchthevideoclip,thencompletetheoutlinewithwhatyouhear.1UNIT3ViewingandunderstandingScanningprocessDuration:twonightsintotalFirstnight:Scanned1)_________hoursofthepaintingforfiveSecondnight:Scanned2)___________________ofthepaintingforsixorsevenhoursTheMonaLisaisfamousforitsmysterioussmile.Butisitstillsomysteriousundertheexaminationofmoderntechnology?Nowwatchthevideoclip,thencompletetheoutlinewithwhatyouhear.1thefrontthesidesandthebackUNIT3ViewingandunderstandingTechnology:Laser:Beamwidth≈afractionof3)______________

Datacollection:10,000datapointspersecondKeyfindingsTechnique:Sfumato–withnosignof4)_____________detailinthemouthareaAuthenticity:About5)________________ofthepaintingisLeonardo’soriginalworkthehumanhairbrushstroke98%/98percentUNIT3ViewingandunderstandingFutureexpectationsTolearnmoreabout6)____________inthefutureTogive7)__________inthefutureachancetoappreciatethemasterpieceabitmorethepaintingeveryoneUNIT3Watchthevideoclipagainandchoosethebestanswertoeachofthequestions.Viewingandunderstanding2UNIT3Watchthevideoclipagainandchoosethebestanswertoeachofthequestions.1WhatwasthemajorconcernoftheresearcherswhentheytookphotosoftheMonaLisa?A.Howtoensurethesafetyofthepainting.B.Howtogetthemostdetailsofthepainting.C.Whattheywereallowedtobringwiththem.D.Whethertheyhadenoughtimetotakephotos.√Viewingandunderstanding2UNIT3Watchthevideoclipagainandchoosethebestanswertoeachofthequestions.2Whatdoweknowabouttheteam’sphotographictechnology?A.Itreplacedtraditionalcameraswithdigitalsensors.B.Ituseddifferenttypesofcamerastorecordeverydetail.C.ItcreatedavideoshowingLeonardo’sbrushmovements.D.Itcreate