新核心大学英语B版听说教程 Unit 3.ppt

Unit3FoodSafety,Inthisunityouwill:1.learnaboutfoodsafety;2.familiarizeyourselfwiththewordsandexpressionsrelatedtothethemeoftheunit;3.practiceevaluatingandjudginginformationfromlecturesandlearntounderstanddetails,methodsandattitudes;4.enhancelisteningskillsthroughnon-theme-relatedaudioandvideomaterials;5.learntouseproperandappropriateexpressionsandsentencestructurestogivepresentations.,Learningobjectives,PartITheme-RelatedActivities,PartIIListeningStrategies,PartIIIExtensiveListening,PartIVCommunicationSkills,PartVAssessmentLog,PartITheme-RelatedActivities,SectionILectureI,SectionIILectureII,SectionIIILectureIII,1.Whatdoyouknowaboutfoodadditives?2.Doyouthinkfoodadditivesshouldbetotallybanned?,Lead-inquestions:,Unit3PartISectionILead-inquestions,WordBank,Unit3PartISectionIWordBank,Unit3PartISectionIWordBank,Notes,Unit3PartISectionINotes,1.EuropeanUnionAneconomicandpoliticalassociationofEuropeancountriesformedafterWorldWarIItoreducetradebarriersandincreasecooperationamongitsmembers.2.ErythrosineAlsoknownasRedNo.3.Itischerry-pinksynthetic,primarilyusedforfoodcoloring.3.GreenDye#1Itisakindofsyntheticusedforfoodcoloring.Ithasbeenwithdrawnfromuse.,Task1Watchthevideoclipandthendecidewhetherthefollowingstatementsaretrueorfalse.,Task,Unit3PartISectionITask1,Moreandmoreofthefoodwebuynowadayshavebeenprocessedindifferentways.2.Thereisalwaysaclear-cutdistinctionbetweenadditivesandingredients.3.Additivesareediblebythemselves.4.Thereisnoagreementonthedefinitionoffoodadditivesamongcountries.5.TheUnitedStateslistsover2,000compoundsasfoodadditives.,T,F,_,_,F,_,T,_,T,_,Task2Watchthevideoclipforthesecondtimeandthencompletethefollowingsentences.,Task,Unit3PartISectionITask2,1.Additivesareinfoodandtheyrenotsubstancesthatyoudnormallyeatbythemselves.2.TheUnitedStateslistsover2,000compoundsasfoodadditives,which,elsewhere,mightbedescribedasorjustas.3.Somepeopleworry,butthis.,infairlysmallquantities,processingagents,ingredients,whetheradditivesarenaturalorartificial,hasnothingtodowithhowsafetheyare,Unit3PartISectionITask2,4.Additivesareputinfoodfor,and.5.Youllnoticewhenyoulookatthelabels,thatsomeprocessedfoodscontainanumberofadditivesall.6.Inrecentyearsfoodadditiveshavebeenveryclosely.7.Tobeonthesafeside,suchadditiveshaveeitherorfromuse.,taste,_,appearance,_,texture,_,preservation,_,convenience,_,performingdifferentfunctions,scrutinized,beenrestricted,withdraw,Unit3PartISectionITask2,8.Thepeoplewhohavingproblemsfromfoodadditivesareasmallpercentageofthepopulation.9.Peoplewithhavetobeverycarefulaboutwhattheyeat.10.Additivescanalsoprovide.,aresusceptibleto,foodintolerance,essentialvitaminsandminerals,1.Whatarefoodadditives?Definetheminyourownwords.2.Whyareadditivesputinfood?Dotheseadditivesexertabadinfluenceonpeopleshealth?3.RecallincidentsinChinawhenfoodadditivesharmedpeopleshealthandalsoshareyouropinionsabouttheseincidents.4.Whatshouldthegovernmentdotopreventfoodadditivesfromharmingpeopleshealth?,Task3Watchthevideoclipagainandthenhaveagroupdiscussionbasedonthefollowingquestions.Afterthediscussion,eachgroupwillgiveabriefreporttotheclass.,Task,Unit3PartISectionITask3,【Script】,Script,Unit3PartISectionIScript,WordBank,Unit3PartISectionIIWordBank,Unit3PartISectionIIWordBank,Unit3PartISectionIIWordBank,Unit3PartISectionIIWordBank,Notes,Unit3PartISectionIINotes,1.Whatisthegoalofthe“FeedBag”program?A.Togivekidsafreemealinschool.B.Toenablekidstobeeducated.C.Togivekidsnutrients.D.Alloftheabove.2.WhichofthefollowingstatementsabouttheproblemsofhungerandobesityintheU.S.istrue?A.TheU.S.isconfrontedwiththeproblemofobesityinsteadofhunger.B.ObesityisalessseriousproblemthanhungerintheU.S.C.Thecasesofhungerhavedecreaseddramaticallyinthelast30years.D.Bothhungerandobesityhavereallyriseninthelast30years.,Task1Watchthevideoclipandchoosethebestanswertothequestionsbelow.,Task,Unit3PartISectionIITask1,3.Mostofthehungrypeopleintheworldare.A.femalesubsistencefarmersB.malesubsistencefarmersC.childsubsistencefarmersD.oldsubsistencefarmers4.Whatwillfinallyleadtothesolutionofhungerandobesity?A.Changingtheclimate.B.Changingthewaypeoplethink.C.Changingthefoodsystem.D.Changingfoodprices.,Unit3PartISectionIITask1,5.WhatchangestoprocessedfoodsthatEllenmentionedwillhelppeoplechangetheirfoodchoices?A.Foodcompaniesprocessingnewfoods.B.Foodcompaniespricingnegativeexternalities.C.Foodcompaniesaddingnutrientstofoods.D.Foodcompaniesremovingadditivesfromfoods.,Unit3PartISectionIITask1,1.WhatisthemainideaEllenwantstoconveytotheaudience?2.WhydidpeoplestarttheFEEDcompany?3.Whatkindoffooddopeoplemostlyeat?,Task2Watchthevideoclipforthesecondtimeandgiveashortanswertoeachofthefollowingquestions.,Task,Bothhungerandobesityarosefromflawsinthefoodsystem.,TheyintendtoraisemoneytoprovideschoolmealsforchildrenandraiseawarenessoftheWorldFoodProgram.,_,_,Unit3PartISectionIITask2,Processedfoodandfastfood.,_,Unit3PartISectionIITask2,4.WhydoesEllenmentionthecasesofyoungchildrendrinkingsoda?,Thepurposeistoshowthattherehasbeenaprofoundshiftinthefoodsystem,whichhasledtohungerandobesity.,_,Task3Watchthevideoclipagainandspeakfortwominutesonthetopic,usingthefollowingwordsandexpressions.Preparetoansweroneortwoquestionsraisedfromclassmatesortheteacherafterthepresentation.,Task,Unit3PartISectionIITask3,【Script】,Unit3PartISectionIITask3,ForReference:,Unit3PartISectionIITask3,Suggestedquestionsandanswers:1.WhydidEllentakeajobattheUnitedNationsWorldFoodProgramme?2.WhatisthegoaloftheFeedBagprogram?,Sherealizedthereisacloseconnectionbetweenfoodandsocialsecurity,soshetookthejobasawaytotrytoaddressnationalsecurityissuesthroughfoodsecurityissues.,_,TheFeedBagprogramaimstoprovidemealsforschoolchildren,raisemoney,andraiseawarenessfortheWorldFoodProgram.,_,Unit3PartISectionIITask3,3.Whathasthecompany,FEED,achievedsofar?4.Accordingtothelecturer,howdidtheU.S.contributetotheworldwideproblemsofhungerandobesity?,Thecompany,FEED,providedschoolmealsforchildreninHaitiaftertheearthquakeandhasprovided55millionmealstokidsaroundtheworldsofar,byselling555,000bags.,_,AccordingtoEllen,theU.S.didnotexportadvancedtechnologiesforproducingprocessedfoodandfastfoodtohunger-strickenareaslikeAfrica,sothatpeopletherehavenoaccesstoadequatefood.However,theU.S.didexportunhealthywaysofeating,suchastheconsumptionofsoda,toothercountriessothatmorepeopleintheworldareobese.,_,Unit3PartISectionIITask3,5.Accordingtothelecturer,howsignificantistheyear2010?,2010istheendofthe30-yearcycle,whichisthebirthdayoftheglobalfoodsystem.ItisthethirtiethanniversaryofGMOcrops,theBigGulp,ChickenMcNuggets,highfructosecornsyrup,thefarmcrisisinAmerica,andthechangeinhowagricultureisaddressedinternationally.,_,Unit3PartISectionIITask3,6.AsfarasChinaisconcerned,whathascausedtheproblemofhungerandobesity?,AsforChina,Ithinktheproblemofhungerisattributedtothefollowingaspects:1)theunequaldistributionoffood:Agooddealoffoodiswastedinsomeareaswhileanumberofpeoplearesufferingfromhungerinotherareas;2)thesaleoffarmland:Manyfarmersselltheirfamilyfarmsforaheftyprofittorealestatedevelopers;,_,Unit3PartISectionIITask3,3)theoverconsumptionofmeat:Muchfarmlandhasbeenusedtofeedanimalsandpoultrytomeetpeoplesincreasingdemandsformeat,solesslandremainsforplantingstaplecrops.Theproblemofobesitycanbeattributedtothefollowing:1)eatingfriedfood:Peopleeattoomuchunhealthyfood,suchasKentuckyFriedChickenandpotstickers(锅贴);2)lackofexercise:Asthenumberofwhite-collarjobshasincreased,Chinesepeoplehavebecomemoresedentary.,_,Script,Unit3PartISectionIIScript,WordBank,Unit3PartISectionIIIWordBank,Unit3PartISectionIIIWordBank,Notes,Unit3PartISectionIIINotes,1.Whatisthelargestcontributortoatmosphere-alteringgases?A.Livestock.B.Energyproduction.C.Animals.D.Junkfood.2.Howmuchofallgreen-housegasisgeneratedbylivestockproduction?A.Nearlyone-fifth.B.Overone-fifth.C.Lessthanone-fifth.D.Exactlyone-fifth.,Task1Watchthevideoclipandchoosethebestanswerstothequestionsbelow.,Task,Unit3PartISectionIIITask1,3.WhathasledtosuchdiseasesasdiabetesandheartdiseaseintheU.S.?A.Lackofexercise.B.Toomuchstress.C.Animproperdiet.D.Lackofdairy.4.Withwhichofthefollowingpointsdoesthespeakeragree?A.Caloriesinfoodssuchasdairyandcarbohydratesmaypreventdisease.B.Themoremeatandpoultrypeopleeat,thehealthiertheywillbe.C.Themoreplantspeopleeat,andthelessotherstuffpeopleeat,thelongertheywilllive.D.Animalproductsareindeedneededforoneshealth.,Unit3PartISectionIIITask1,5.Whowouldneverletplantsandwholegrainssupplanteatingjunkfood?A.Thegovernment.B.Thepublic.C.Consumers.D.Industrylobbyists.,Unit3PartISectionIIITask1,Task2WatchthevideoclipagainandthenarrangethefollowingstepsforcreatingthePleointhecorrectorder.Itmayhelptounderlinekeywordsfirst.,Task,Unit3PartISectionIIITask2,generatemoregreenhousegasthantransportation.isoneofthebiggestculpritsinlanddegradation.enablepeopletolivelonger.Livestockusemoreantibioticsthanpeopledo.shouldsupplanteatingjunkfoodsothatpeopleshealthcanbepromoted.AnimalsisoverconsumedbypeoplesothatdiseaseslikediabetesandheartdiseasearemoreprevalentintheU.S.Plantsarenotadvocatedbyindustrylobbyists.havebeenmarketedheavily,creatingunnaturaldemand.,Livestock,Livestock,_,Plants,_,Livestock,_,Plants,Livestock,_,Plants,_,Animals,【Script】,Script,Unit3PartISectionIIIScript,PartIIListeningStrategies,UnderstandingLectures:EvaluatingInformation(UnderstandingDetails,Methods,andAttitudes),UnderstandingLectures:EvaluatingInformation(UnderstandingDetails,Methods,andAttitudes)Guidedbyageneralideaofwhatthelecturewillbeabout,learnersmoveontoevaluateandjudgewhatthespeakersays,distinguishingimportantideasfromlessimportantones,mainideasfromsubordinateones,e.g.anideafromanillustrationorexample.Inthismulti-taskingprocess,learnersmusthaveinmindthespecificpointthelecturerisexplainingandthewayheexplainsitbylookingforcluesinhiswords.Forexample,1.Whenthelecturersays“letmerepeat”,heisemphasizingthatthispointisimportant.2.Inourlastclass,weweretalkingaboutthetarpitsatBranchoLaBreainLosAngeles,anduh,Unit3PartII,whatagreatsourceoffossils,fossilinformationthese,uh,tarpitshavebeen.Therehavebeenwell,millions,literallymillionsoffossils,ofbonesofIceAgemammalsthatwere,uh,trappedintheasphaltpondsthere.Itsanidealplaceforfossilhuntersthestickyasphalttrappedtheanimals,andthentheasphalthelpedpreservetheirbones.Ofcourse,um,tarpitsarenottheonlyplacetolookforfossilbones.Manyarefoundinstreambeds,lakebeds,deserts.Anothergoodplaceforpaleontologiststolookforremainsisincaves.Therearereallytwotypesofcaveswherefossilscanbefound.Onetypeisthecarnivoreden,placeswherecarnivoreslived.Agoodexampleofacarnivoredenwas,uh,discoveredatAgateNationalMonumentinNebraska.Now,thesecondtypeofcavewhereyoufindfossilsiscalledanaturaltrap.,Unit3PartII,Inexample2,thelecturerintroducesthemainideaofhislecturebyreviewingthelastlecture,the“asphaltponds,anidealplaceforfossilhunters”andshiftingnaturallytootherplacesby“Ofcourse,um,tarpitsarenottheonlyplace”andthenpursuingwhatis“anothergoodplace”.Toelaborateonfossilsincaves,thelecturerusesclassification(onetypeis)andexemplification(agoodexampleofacarnivoredenwas).Toputitinanotherway,whilelistening,learnersaretryingtounderstandthelecturerswayofdelivery,forexample,howhebeginsthelecture(thespeakermaystartwithaquestion,agesture,aninterestingorunusualstoryorfact,aprop,orpersonalexperience),howhepresentsideas(e.g.exemplification,classification,comparisonandcontrast),andhowheconcludesthelecture.,Unit3PartII,Whilelearnersarelistening,theymayaskthemselvesthefollowingquestionstokeepontrackwiththeflowofthelecture.Typicallyaskedquestions:Howdoestheprofessorintroducetheideaof?Whatisthemainidea/subjectofthislecture?Whatdoesthelecturemainlyconcern?Whatdoesthespeakersayabout?Accordingtothelecture,whichofthefollowingisNOTtrue/mentioned?Howdoesthespeakerexplaintheconceptof?Whatisthespeakersopinionabout?Whatdoestheprofessorimplyabout?Whatcanbeinferredfromthislectureabout?,Unit3PartII,WordBank,Unit3PartII,Unit3PartII,Unit3PartII,Notes,Unit3PartII,TaskWatchthevideoclipandgiveashortanswertoeachofthefollowingquestionsandcompletethetable.,Task,Unit3PartIITask,1.Howdoestheprofessorstarthislecture?2.Whatdotheargumentselicitedbytheprofessorreveal?3.Whatwilltheprofessormostlikelydiscussinthenextlecture?4.Howdoestheprofessorconcludehislecture?,Withthought-provokinghypotheticalscenarios.,_,Consequentialistandcategoricalmoralprinciples.,_,ThecontrastbetweenConsequentialistandCategoricalmoralprinciples.,_,Byexplainingthegoalofthecourse:toawakenrecklessnessofreason.,_,Unit3PartIITask,theconsequencesofanact,_,utilitarianism,_,Englishpoliticalphilosopher,_,certainabsolutemoralrequirements,certaincategoricaldutiesandrights,_,Germanphilosopher,_,5.Inthislecture,theprofessorintroducestwomoralprinciples.Completethefollowingtabletoclarifythedifferencesbetweenthem.,【Script】,Script,Unit3PartIITask,PartIIIExtensiveListening,INewsReports,IIInterview,IIISpeech,IVConversations,VPassageListening,VICompoundDictation,WordBank,Unit3PartIIIINewsReportsI,Unit3PartIIIINewsReportsI,1.WhatismarketsizeoforganicproductsintheU.S.?A.25billion.B.2.5billion.C.25million.D.2.5million.2.OneofthereasonswhyGMOandnon-GMOproductscanco-existinthemarketisthat.A.neitherofthemcauseshealthproblemsB.neitherofthemdoesenvironmentalharmC.customersarewillingtopayapremiumfornon-GMOproductsD.customersarewillingtopayapremiumforGMOproducts,Listentothereportandthendothefollowingexercise.,Unit3PartIIIINewsReportsI,3.AccordingtoGeorgeKimbrell,whoshouldberesponsibleforkeepingGMOproductsoutoforganicproducts?A.ThecompaniesthatproducedandpatentedGMOproducts.B.Thecompaniesthatproducedandpatentedorganicproducts.C.Bothoftheabove.D.Noneoftheabove.,Unit3PartIIIINewsReportsI,【Script】,Script,Unit3PartIIIINewsReportsI,WordBank,Unit3PartIIIINewsReportsII,Unit3PartIIIINewsReportsII,1.WhoisToddCasey?2.Whatisthemajorproblemhenowfaces?3.Whatcausedtheproblem?4.HowdependentareAmericansontheGulfofMexico?5.HowwilltheFDAdealwiththisproblem?6.WhatarepeoplesreactionstothecontaminatedGulfseafood?,Listentothereportandexplainthenewsstorybasedonthefollowingquestionsinyourownwords.,Unit3PartIIIINewsReportsII,【Script】,Unit3PartIIIINewsReportsII,ForReference:,ToddCaseyistheowner-operatorofanOysterCompany.Heisnowfacedwithamajorproblem,nooystersduetotheoilspillintheGulfofMexico,fromwhereAmericansget70%oftheoysterstheyconsume.TheFDAwillbaseanydecisiontoreopenfisheriesonmonitoringdata.ThegeneralAmericanpublicarefairlyconcernedaboutthesafetyoftheGulfseafood.AlthoughsomepeopledonotworryaboutthesafetyoftheGulfseafood,quitealotpeoplehavedoubtsandtakea“wait-and-see”attitudetowardstheseafood.,Script,Unit3PartIIIINewsReportsII,WordBank,Unit3PartIIIINewsReportsIII,Listentothenewsreportandthenanswerthequestionsorallyafterwards.Comparewhatyouhavesaidwiththereferenceanswersprovided.,1.Whatisthegoodnewsmentionedinthereport?,ThegoodnewsisthattheObamaadministrationhasprovidedgreatfinancialsupportfordevelopingcountriesandhasalsoappealedtootherindustrializedcountriestodothesame.Asaresult,supporthasgrownsubstantiallyforagriculturalresearchandeducationindevelopingcountriesandforbuildingessentialinfrastructurethatwillcatalyzeeconomicgrowth.,_,Unit3PartIIIINewsReportsIII,2.Whatis