Food and health(食物與健康)ppt課件

FoodandHealth,UnitTwo,1,學(xué)習(xí)交流PPT,1.Warm-upActivity,Readthefollowingquoteabouthealthyeating.Trytoexplainitwithexamplesoryourpersonalexperiences.Theonlywaytokeepyourhealthistoeatwhatyouvdontwant,drinkwhatyoudontlike,anddowhatyoudrathernot.,2,學(xué)習(xí)交流PPT,2.ListeningandSpeakingText1.Geneticallymodifiedfood,QandA1.WhatdoyouknowaboutGMfood?2.WhatdoyouthinkofthepurposeofproducingGMfood?3.DoyoumindeatingGMfoood?Doyouthinkitmightdobadtoyourhealth?,3,學(xué)習(xí)交流PPT,geneticallymodifiedfood轉(zhuǎn)基因食品readuponthesubject研究這個(gè)課題Dontbedaft.別傻了！havemyfoodaltered食物被改變hepatitisBvaccines乙肝疫苗playaroundwith.擺弄playhavocwith擾亂Whenaspeciesdiesoutormutates,ithasaknock-oneffectonthewholeecosystem.黨某一物種滅絕或者發(fā)生基因突變，它會對整個(gè)生態(tài)系統(tǒng)產(chǎn)生連鎖反應(yīng)。cynical憤世嫉俗的thehabitatofpolarbears北極熊的棲息地comearoundtomywayofthinking改變思維方式aguineapig試驗(yàn)品（小白鼠）,4,學(xué)習(xí)交流PPT,Referenceanswers,EX1.TFFFTFEX2.safertightercontrolsvegetablesextictdecreasinginnumberspoorcountrieswholeecosystem,5,學(xué)習(xí)交流PPT,Classdebate:IsGMFoodBeneficial,Argumentsfor:TherehavebeenagreatnumberofstudiestrackingtheeffectsofGMfoodonanimals.ThesestudiesindicatethatGMfoodissafetoconsumeFarmerswhogrowGMcropsusefewerenviornmentallydamagingpesticides.GMcropscanhavelargeryields.TheincreasingyieldsofGMcropsareessentialtofeedingtheworldsgrowingpopulation.GMfoodcanwithstandcolderweather,droughts,andfloodsArgumentsagainst:GMcropshaveledtoanincreaseinherbricide-and-pesticide-resistantweedsandinsects.Thereisnoscientificconsensusonthelong-termsafetyofGMfood.Introducingageneintoaplantmaycauseunexpectedallergicreactionstopeople.SomeGMfoodshaveantibioticfeaturesbuiltintothem.Peoplewhoconsumethesefoodsmaybecomeresistanttoantibioticdrugs.,6,學(xué)習(xí)交流PPT,Text2.Truthaboutorganicfoodlabels,Thedifferentorganicfoodlabels:Natural:anythingbutorganicContainsorganicingredients:lessthan70%Madewithorganicingredients:atleast70%Organic:atleast95%100%organicTheorganiclabelingomeatanddairyproducts:Grassfed:outdoorsandanaturaldietofgrassFreerange:outdoorsNohormonesadded,7,學(xué)習(xí)交流PPT,Referenceanswersfor,organiclessthanatleast95%100%theoutdoorsnaturaldietbeingkeptinsmallcagesbeingraised,8,學(xué)習(xí)交流PPT,Groupwork,Describethechartbrieflyandgivecommentsonyourownclaims(refertotheusefulexpressionsonP.21),9,學(xué)習(xí)交流PPT,Text3.Meatornot-Fourtypesofvegetarians,Workingroupsonthefollowingquestions:Canyoulivewithoutmeat?Doyouknowanypersonwhodoesntlikeeatingmeat?Haveyoueveraskedthemaboutthereasons?Whydomorepeoplechoosetobecomevegetariansnow?Whatcanpeoplebenefitfromavegetariandiet?Whatarethehealthrisksinbecomingavegetarian?Doyouwanttobeavegetarian?Whyorwhynot?Groupreportfortheanswersofthesequestionsinashortpassage.,10,學(xué)習(xí)交流PPT,alacto-ovovegetarian:plantfood+diaryproducts+eggsdiaryeggsalactovegetarian:plantfood+diaryproductsanovovegetarian:plantfood+eggsavegan:plantfoodonly,11,學(xué)習(xí)交流PPT,Referenceanswers,EX1.EX2.milk,cheese,yoghurtmarinesourcelikemarinealgae,fishoilsupplementdeatmeatEX.3homework,12,學(xué)習(xí)交流PPT,3.ViewingandSpeaking,Listsomeprocessedfoodswhichyoulikebutmaydoharmtoyourhealthifyoueattoomuchofthem.Andtelluswhyyoulikethem?Canwecompletelyavoidprocessedfoodsinourdailylife?Ifnot,whatmeasurescanwetaketomaintainacomparativelyhealthydiet?LearnthenewwordsandexpressionsonP.24.,13,學(xué)習(xí)交流PPT,Referenceanswers,1.theirnaturalstate,man-madeingredientsshelflife,hydrogen,uptoahalfgram,thesameas,lookold2.bad,good,plastic,cells,communicateortalk,cancer,packagedfoods,fat,desiremore,highbloodtressure3.homeworkW