新核心大学英语B版听说教程2Unit2.ppt

Unit2Energy,Inthisunityouwill:1.learnaboutsomeenerty-relatedproblemsandpressureshumanbeingsface;2.familiarizeyourselfwiththewords/expressionsrelatedtothethemeoftheunit;3.learntousethesewordsandexpressions;4.learnmoreabouttheABCsofnewsreporting;5.practicelisteningwithothernon-theme-relatedaudioandvideomaterials;6.learntousetheproperexpressionsandsentencestructurestoaskpermission.,Learningobjectives,PartITheme-RelatedActivities,PartIIListeningStrategies,PartIIIExtensiveListening,PartIVCommunicationSkills,PartVAssessmentLog,PartITheme-RelatedActivities,SectionITalk,SectionIIFeature,SectionIIITalk,1.Whatmeasuresshouldbetakentoraisepeoplesawarenessofenergyconservation?2.Whathaveyoudonetoadoptorpopularizeamoreenergy-efficientlifestyle?,Lead-inquestions:,Unit2PartISectionILead-inquestions,WordBank,Unit2PartISectionIWordBank,Unit2PartISectionIWordBank,Notes,Unit2PartISectionINotes,1.AndsothenIwentouttodevelopawholeseriesonthelandscapeofoil.ThenIstartedtomakeaseriesonthesituationofoil.2.Andthatsonechapter.Andthatsonlyonepartofthewholething.3.Thewholeworldat1.2trillionestimatedreserves,onlygivesusabout45years.Theestimatedreservesofoilis1.2trillionforthewholeworld,whichwouldonlysustainourlifeforabout45years.4.peakoilaperiodwhichseesanextremelylargeconsumptionofoil.,Task1Watchthevideoclipandthencompletethefollowingcomprehensionquestions.,Task,Unit2PartISectionITask1,1.What,mostlikely,isthespeakersoccupation?A.Writer.B.Photographer.C.Socialactivist.D.Ecologicalresearcher.2.Whydidthespeakerdecidetophotographthelandscapeofoil?A.Oilreflectsthescaleofchangeandthespeedwetakeresources.B.Oilisthemostbasicsupportofourdailyactivities.C.Wehaverunintothemostseriousoilcrisisindecades.D.SuchalandscapedemonstratesourexploitationoftheEarth.,Unit2PartISectionITask1,3.Whatdoesthespeakerintendtodocumentwithhisphotos?A.Howpeoplecelebratetheircars.B.Overexploitationoflimitednaturalresources.C.Thedaywheneverythingbuiltonoilcollapses.D.Consumptionofoilinourmotorcultures.4.Accordingtothespeaker,howlongwillthepresentoilreserveslast?A.Approximately30years.B.Approximately40years.C.Approximately45years.D.Approximately50years.,Unit2PartISectionITask1,5.Whatisthepurposeofthistalkonphotographingthelandscapeofoil?A.Toalerttheaudienceofthedireconsequencesoftheendofoil.B.Tocallonpeopletotakeactionregardingtheenergycrisis.C.Toimparttheknowledgeofoilconservation.D.Toadvocateforamoreeco-friendlylifestyle.,Task2Watchthevideoclipasecondtimeandthenidentifywhichofthefollowingtopicsthespeakermentionedinthetalk.Tickthoseyouheardinthetalk.,Task,Unit2PartISectionITask2,1.Howoilisextractedandrefined.2.Monitoringtheconsumptionofoil.3.Thepossibleendofoil.4.Interactingwithmoreecologists.5.Supportingorganicmaterialandorganiclifestyles.6.Thebiggestoilsuppliersintheworld.7.Theamountofoilconsumedeveryyear.8.Beresponsibletofuturegenerations.,_,_,_,_,_,_,_,_,Task3Watchthevideoclipagainandthenhaveagroupdiscussionbasedonthefollowingquestions.Afterthediscussion,eachgroupwillgiveabriefreporttotheclass.,Task,Unit2PartISectionITask3,【Script】,Script,Unit2PartISectionIScript,WordBank,Unit2PartISectionIIWordBank,Unit2PartISectionIIWordBank,Notes,Unit2PartISectionIINotes,Task1Watchthevideoclipandthencompletethefollowingtable.,Task,Unit2PartISectionIITask1,water,oil,land,energy,climate,economicpressure,enchantedbyhersmallworld,leftthesuburb,onthetopfloor,_,_,_,_,_,_,_,_,_,Unit2PartISectionIITask1,acompactcar,recycled,harnessingtheoceansenergy,lessdesirableplaces,_,_,_,_,Whyarethechallengeswearefacingtodayespeciallydifficultforthegovernmenttocopewith?2.Whatabnormalphenomenacanbeobservedinplants?3.WhywasLucysmotherpuzzledwhenshesawthedragonflies?,Task2Watchthevideoclipasecondtimeandthengiveashortanswertoeachofthefollowingquestions.,Task,Allthesechallengesarehappeningatthesametime.,Flowersarebloomingearlier;treesareleafingearlier.,_,_,Unit2PartISectionIITask2,TheyweresupposedtobeinCuba,notinMiami.,_,Unit2PartISectionIITask2,4.Whatcouldhappentotheoilpriceby2015?5.WhatisthebasicassumptionbehindtheAmericanwayoflife?6.HowistheAmericanagriculturesystemheavilydependentonoil?,Itcoulddoubleortriple.,Oilwillbeplentifulforever.,Planting,harvestingandtransportingalldependontheconsumptionofoil.,_,_,_,Task3Watchthevideoclipagainandmakeatwo-minutecommentonthetopicofthevideoclip.Preparetoansweroneortwoquestionsraisedbytheclassoryourteacherafteryourpresentation.,Task,Unit2PartISectionIITask3,ForReference:,Unit2PartISectionIITask3,Questions:1.Whataresomeoftheproblemshumanbeingsarefacedwithnow?2.Doyouhaveanyideawhatrenewableenergyis?Whydoesrenewableenergyattractmuchattentionthesedays?,Temperaturechange,plungingstockmarkets,theshortageofdrinkingwater,diseases/epidemics,energy,climate,food,population,economicpressures,risingsealevels,drought,etc.,Renewableenergycomesfromnaturalresourcesthatarenotdepletedbyuseorarequicklyreplenishedsuchasenergyfromthewindandsun.Theideaofrenewableenergyisparticularlyappealingthesedaysbecausemorepeopleworldwideareawareofthefactthatourcurrentenergyresourcesarenotendless.Wewillultimatelyrunoutofthem.,_,_,Unit2PartISectionIITask3,3.Whatistheso-calledAmericanwayoflifediscussedinthevideo?4.DoyouadmiretheAmericanwayoflife?Pleasegiveyourreasons.,Thekindoflifethatdependsonthebeliefthatoilwillbeplentifulforever.,Notreally.TheAmericanwayoflifeisbasedonafalsebelief.Infact,ouroilreservewillnotlastforever.ManyAmericanspreferbiggercarswhichconsumemoreoilandlargerservingsoffood,whichcontainhighercaloriesandcholesterol.Butmoredoesnotnecessarilymeanbetter.InsteadIpreferamoderatelifestyle.,_,_,Unit2PartISectionIITask3,【Script】,5.Doyouwanttoliveinasmalltownorinthecountrysidewhereyoucanleadamoreself-reliantsortoflife?Pleaseelaborate.Answerswillvary.6.Willhumanbeingsonedayoutsmartthemselves?Whyorwhynot?Answerswillvary.,Script,Unit2PartISectionIIScript,WordBank,Unit2PartISectionIIIWordBank,Unit2PartISectionIIIWordBank,Notes,Unit2PartISectionIIINotes,1.Illtrytospinastoryaboutenergy.Illtrytotellyouastoryaboutenergy,inwhichimaginationisinvolved.2.M.I.T.MassachusettsInstituteofTechnology.Foundedin1861,isaprivateresearchinstitutelocatedinCambridge,Massachusetts.MIThasfiveschoolsandonecollege,containingatotalof32academicdepartmentswithastrongemphasisonscientificandtechnologicalresearch.,Task1Watchthevideoclipandthendecidewhetherthefollowingstatementsaretrueorfalse.,Task,Unit2PartISectionIIITask1,1.Inthetalkthespeakercoversseveralsourcesofenergyinadditiontooil.2.Thespeakersaysoilismarvelousbecauseitisenergy-denseandeasytofindonEarth.,(Oilisveryenergy-denseandveryeasytorefineintoanumberofveryusefulproductsandfuels.),T,F,_,_,Unit2PartISectionIIITask1,3.Inthelast25yearsoilconsumptionhasdroppedfrom50percentto35percent.4.Thereisnodifferencebetweenlimestone,chalkandabaloneshellsbecausetheyareallmadeofthesamematerial:calciumcarbonate.5.LiketheStoneAge,theageofoilwillalsoendbecauseonedaywewillrunoutofoil.,(Thereisadifference,andthedifferenceliesinhowthemoleculesareputtogether.),T,F,_,_,F,_,(TheStoneAgeendednotbecauseweranoutofstones.Ideas,innovationandtechnologywillendtheageofoillongbeforewerunoutofit.),Task2Watchthevideoclipasecondtimeandthencompletethefollowingstatements.,Task,Unit2PartISectionIIITask2,1.Searstookoilasthestartingpointofhisstoryaboutenergybecauseofits.2.Youcangetthemarvelousliquidofoilbyputtingaboutand20hydrogenatomstogetherin.3.Formostofthepast150years,oilhasbeenofourenergysystem.4.Oilhasbeenplayinginglobalenergysystemforthelast25years,andgasolineconsumptionisandwillcontinueto.,convenience,eightorsocarbonatoms,exactlytherightway,adominantpart,lessandlessofarole,decline,_,_,_,_,_,_,Unit2PartISectionIIITask2,5.Inthelastfewdecades,whathastakentheplaceofoilarealotofandalittlebitofenergy.6.Anobservabletrendinourenergysystemisthatitisbecoming.7.Limestoneandchalkaremadeofchemicalelements,andtheirdifferencerestsintheway.8.Abaloneshellsaretougherthanchalkbecauseabalonelaysdowncalciumcarbonatecrystals.9.Thefutureoftrulysustainable,carbonfreeenergyliesinofsomesimplestuffdifferently.10.Itisthatwillbringapromisingfutureintermsofenergy.,naturalgas,nuclear,progressivelylesscarbonintense,thesame,themoleculesareputtogether,3,000times,inlayers,rearrangingthemolecules,ideas,innovationsandtechnology,_,_,_,_,_,_,_,_,_,【Script】,Script,Unit2PartISectionIIIScript,PartIIListeningStrategies,SectionINewsSources,NewsSources,Unit2PartIISectionI,Newsmediaincludesnewspaper,magazine,radio,television,theInternet,etc.Theyareimportantvehiclesforconveyinginformation.InBritain,importantnewspapersaretheDailyExpress,DailyMail,DailyMirror,DailyTelegraph,FinancialTimes,Guardian,theSun,theTimes,whileinUSleadingnewspapersincludetheChicagoDailyTribune,ChristianScienceMonitor,InternationalHeraldTribune,LosAngelesTimes,NewYorkTimes,WallStreetJournal,etc.InCanadaprimarynewspapersincludetheGlobeandMail,MontrealStar,OttawaJournal,TorontoStar,VancouverSun,etc.InAustraliaandNewZealandleadingnewspapersaretheEveningPost,Herald,theAustralian,AucklandStar,NewZealandFinancialTimes,etc.,Unit2PartIISectionI,LeadingEnglishradioandtelevisionstationsareBritishBroadcastingCorporation(BBC),AmericanBroadcastingCompany(ABC),AustralianBroadcastingCommission(ABC),CableNewsNetwork(CNN),CanadianBroadcastingCorporation(CBC),ColumbiaBroadcastingSystem(CBS),NationalBroadcastingCorporation(NBC),NationalPublicRadio(NPR),NewZealandBroadcastingCorporation(NZBC),RadioAustralia(RA),RadioCanadaInternational(RCI),VoiceofAmerica(VOA),etc.,Unit2PartIISectionI,ListeningSkillListenforSourceofInformationandReportersVoiceApartfromthesixbasicelementsofnewsreports,thesourceofinformationandthestanceofeachreportarealsoimportant.Sincenewsisnevertobefabricatedandfalsified,thesourceoftheinformationreportedbecomesanindispensableguaranteetokeepthenewsobjectiveandpersuasive.Ontheotherhand,objectivenewsisnotcompletelyobjectivebecausethereportersvoiceisrarely100percentneutral.Takealookatthefollowingtwoexamples.,Unit2PartIISectionI,e.g.TheworldmaysoonseetheendofBlackGuillemotandthePacificwalrusasaresultofseaicelossintheArctic,accordingtoscientistsmeetingattheArcticScienceConferenceinFairbanks,Alaska.e.g.NewsweekhaslearnedthatPentagonanalystsarestillaggressivelyhuntingforevidencethatmighttieAtta,oranyoftheotherhijackers,toSaddamsagents.Itmayyetturnup,butfornow,atleast,themuchtouted“Pragueconnection”appearstobeanintriguing,butembarrassing,mistake.Inthefirstexample,thesourceofinformationcomesfrom“scientists”.Theyaremorepersuasivethanthereporterfortheissueofspeciesextinctionduetoiceloss.Thesecondexampleuses“might”,“mayyet”,“atleast”,“appears”toshowthereporterslackofevidencetoreachaconclusion.,Unit2PartIISectionI,RuleofThumb1Sourcesofinformationhavevariouslinguisticrealizationsinnewsreports.Sometypicalexpressionsare:accordingto,astheofficialputsit,itisreported,datashows,authoritiessaid,thespokesmanannounced,etc.RuleofThumb2Thereporterswordchoiceandinflectioncanrevealtheirownstanceonasubject.Sometypicalexpressionscanhelpusfindthereportersvoice.Theyinclude:inallpossibility,itisdoubtful,itisfullyjustifiable,itislikely,thereisgoodevidencethat,thereisnodoubtthat,itseems/appearsthat.Besidesthat,modalsalsohelppinpointthereportersvoice:may,might,can,could,should,andoughtto.,WordBank,Unit2PartIISectionITask1,Task1Listentothefollowingnewsforkeywordsthatrealizethesourceofinformationandthereportersstance.Thenfillintheblankswiththeexactwordsyouheard.,Task,Unit2PartIISectionITask1,NoLinkBetweenSomeHigh-CarbohydrateFoodsandCancerResearcherssaythere1)tobenolinkbetweenasubstancefoundinsomehigh-carbohydratefoodsandthedevelopmentofsometypesofcancer.2)researcherscomparedthedietsof1,000peoplewithcolon,bladderandkidneycancerwiththedietsofnearly550healthyindividuals.,appears,USandSwedish,_,_,Unit2PartIISectionITask1,Researcherslookedathowmuchpotatochips,Frenchfriesandbread,andcertaintypesofcerealtheyconsumed.Thoseareallfoodsfoundtocontainhigherlevelsofacrylamide.The3)thencomparedthosewhoatefoodscontainingalotofacrylamidetothosewhoconsumedlessofthesubstance.LoreleiMucciofHarvardUniversitysDepartmentofEpidemiologyinBostonisthestudysleadauthor.TheresultsarepublishedinthecurrentissueoftheBritish4).“Wefoundthatnoneofthefooditemsthathavehighormediumlevelsofacrylamide5)toincreasetheriskofcancer.Andthenalsothatthetotalacrylamidedosethatsomeonetakesinthroughtheirdietswasnotassociatedwithanyexcessriskofthesefourcancers.”,investigators,JournalofCancer,seem,_,_,_,Unit2PartIISectionITask1,Swedishresearcherssparkedinternationalalarmlastyear,whenthey6)thattheyhadfoundhighlevelsofacrylamideincertainfoods.Researchers7)acrylamidecancausecancerinanimals,raisingconcernthatit8)causecancerinhumans.9)saythesubstanceisproducedwhenstarchyfoods,suchaspotatoes,arecookedatveryhightemperatures,suchasfrying.ButMs.Muccisaidherstudysuggestsacrylamide10)notbeasharmfulasfirstthought.“.11)inthedosesthatpeoplearetakinginthroughthediet.So,12),whatshappeningisthat,eventhoughyouretakinginacrylamidethroughyourdiet,youareabletoeffectivelydetoxifyit.”ButMs.Muccisaysshe13)liketoseefurtherstudyofacrylamideandits14)linkstoothercancers.,announced,say,could,Scientists,may,Atleast,probably,would,possible,_,_,_,_,_,_,_,_,_,WordBank,Unit2PartIISectionITask2,Notes,DalhousieUniversityinHalifax,CanadaLocatedinHalifax,NovaScotia,Dalhousieisaleading,research-intensiveuniversityofferingover180degreeprogramsin11diversefaculties.,Unit2PartIISectionITask2,Task2Listentothefollowingnewsforkeywordsthatindicatethesourceoftheinformationandthereportersstance.Thenfillintheblankswiththeexactwordsyouheard.,Task,Unit2PartIISectionITask2,DecreaseinSharkPopulationHarmsOceanEcosystems1)sayoneoftheworldsmostfeared,butmisunderstood,creaturesisunderassaultbyfishermen.Anewstudyofalltypesofsharks2)thattherearefewerofthemthanthereusedtobe,andthatisharmingoceansecosystems.Astudyinthisweeksjournal3)isoneofthefirsttolookatthesharkpopulation.Researchers4)sharksinthenorthwestAtlantic,avastareathatencompassesNewfoundlandtothenorthandnorthernBraziltothesouth,andstretchesfromtheGulfofMexicotoadistantpointeastoffthecoastofSouthofAmerica.,Experts,finds,Science,surveyed,_,_,_,_,Unit2PartIISectionITask2,5)JuliaBaumsaysfishermanusinglonglineswithuptoathousandhooks,designedtocatchswordfishandtuna,arealsosnaringsharks.AndMs.Baumsaysthishasresultedinhugesharkdeclines.“Forhammerheadsharks,an89percentdeclineiswhatweareestimatingforthepast15years.Thatisaphenomenaldecline6),thethreshershark,weestimatehasdeclinedbyan80percentdecline.”Thestudyalso7)a79percentdropforwhitesharksanda65percentdeclineintigersharkssince1986.Ms.BaumandcolleaguesatDalhousieUniversityinHalifax,Canadaused8)fromlogbookskeptbyfishermen,andtheypluggeditintoamodeltoarriveattheestimates.,Leadauthor,Similarly,found,data,_,_,_,_,Unit2PartIISectionITask2,Ms.Baumsaystheuseofhookedlonglinesiscommonallovertheworld,soitssafeto9)thatsharkpopulationsareinsteepdeclineglobally.Whilemanysharksarecaughtbyaccidentinlonglines,shesayssharkfinsareprizedthroughoutAsiatomakesoup,sotheresadeliberateefforttocatchthemaswell.Manypeoplemight10)whyitsimportanttoworryaboutfewersharksbecausetheyrepredatorsandwillattackhumans.“Thenumberofattacksthroughouttheworldisfairlyminimal.”MalcolmSmaleisamarinebiologistwiththePortElizabethMuseuminSouthAfrica.“Forexample,inSouthAfrica,weonlyhaveaboutthreetofiveattacksperyearonaverage.Lessthanoneperyearisfatal.Andthisisamuchlowernumberthananyothercauseofeitherinjuryorfatality,forexample,roadaccidents,peoplegettingshotinburglaries,peopledrowning,peoplestruckbylightningandsoon.”,assume,ask,_,_,Unit2PartIISectionITask2,Butsharksaretheoceanstoppredator.Assuch,Mr.Smalesaystheyeatsmaller,weakerfishandthosethat11)beunfitforhumanconsumption.“Now,onemight12)itsnotsuchabadthing.Butinreality,whatwe13)callpestspeciesthosewithveryrapidlifecycles,inotherwords,theybreedwithinayearortwoare14)tobecomemorecommon.Andontheonehand,thatmightbethoughttobeagoodthingiftheyreedible,butinmanycasesthesespeciesmightbepestspecies,inotherwords,notsuitableforhumanconsumption.Andsothisisdetrimentaltobothhumansandthefoodweb.”,may,think,would,likely,_,_,_,_,Unit2PartIISectionITask3,Task3Readthefollowingpassageaftertheclip.payparticularattentiontopronunciationandintonation.,Task,Swedishresearcherssparkedinternationalalarmlastyear,whentheyannouncedthattheyhadfoundhighlevelsofacrylamideincertainfoods.Researcherssayacrylamidecancausecancerinanimals,raisingconcernthatitcouldcausecancerinhumans.Scientistssaythesubstanceisproducedwhenstarchyfoods,suchaspotatoes,arecookedatveryhightemperatures,suchasfrying.ButMs.Muccisaidherstudysuggesteacrylamidemaynotbeasharmfulasfirstthought.,PartIIIExtensiveListening,INewsReports,IITalk,IIIScienceReport,IVConversations,VPassageList