新核心大学英语B版听说教程 Unit 3.ppt

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1、Unit3FoodSafetyInthisunityouwill:1.learnaboutfoodsafety;2.familiarizeyourselfwiththewordsandexpressionsrelatedtothethemeoftheunit;3.practiceevaluatingandjudginginformationfromlecturesandlearntounderstanddetails,methodsandattitudes;4.enhancelisteningsk

2、illsthroughnon-theme-relatedaudioandvideomaterials;5.learntouseproperandappropriateexpressionsandsentencestructurestogivepresentations.LearningobjectivesPartITheme-RelatedActivitiesPartIIListeningStrategiesPartIIIExtensiveListeningPartIVCommunicationS

3、killsPartVAssessmentLogPartITheme-RelatedActivitiesSectionILectureISectionIILectureIISectionIIILectureIII1.Whatdoyouknowaboutfoodadditives?2.Doyouthinkfoodadditivesshouldbetotallybanned?Lead-inquestions:Unit3》PartI》SectionI》Lead-inquestionsWordBankUni

4、t3》PartI》SectionI》WordBankUnit3》PartI》SectionI》WordBankNotesUnit3》PartI》SectionI》Notes1.EuropeanUnionAneconomicandpoliticalassociationofEuropeancountriesformedafterWorldWarIItoreducetradebarriersandincreasecooperationamongitsmembers.2.ErythrosineAlsok

5、nownasRedNo.3.Itischerry-pinksynthetic,primarilyusedforfoodcoloring.3.GreenDye#1Itisakindofsyntheticusedforfoodcoloring.Ithasbeenwithdrawnfromuse.Task1Watchthevideoclipandthendecidewhetherthefollowingstatementsaretrueorfalse.TaskUnit3》PartI》SectionI》T

6、ask1Moreandmoreofthefoodwebuynowadayshavebeenprocessedindifferentways.2.Thereisalwaysaclear-cutdistinctionbetweenadditivesandingredients.3.Additivesareediblebythemselves.4.Thereisnoagreementonthedefinitionoffoodadditivesamongcountries.5.TheUnitedState

7、slistsover2,000compoundsasfoodadditives.TF______F___T___T___Task2Watchthevideoclipforthesecondtimeandthencompletethefollowingsentences.TaskUnit3》PartI》SectionI》Task21.Additivesareinfoodandthey’renotsubstancesthatyou’dnormallyeatbythemselves.2.TheUnite

8、dStateslistsover2,000compoundsasfoodadditives,which,elsewhere,mightbedescribedasorjustas.3.Somepeopleworry,butthis.infairlysmallquantitiesprocessingagentsingredientswhetheradditivesarenaturalorartificialhasnothingtodowithhowsafetheyareUnit3》Pa