Food and health(食物与健康)课件

FoodandHealthUnitTwoFoodandhealth(食物与健康)1.Warm-upActivityReadthefollowingquoteabouthealthyeating.Trytoexplainitwithexamplesoryourpersonalexperiences.Theonlywaytokeepyourhealthistoeatwhatyouvdon'twant,drinkwhatyoudon'tlike,anddowhatyou'drathernot.Foodandhealth(食物与健康)2.ListeningandSpeaking

Text1.Geneticallymodifiedfood

QandA1.WhatdoyouknowaboutGMfood?2.WhatdoyouthinkofthepurposeofproducingGMfood?3.DoyoumindeatingGMfoood?Doyouthinkitmightdobadtoyourhealth?Foodandhealth(食物与健康)geneticallymodifiedfood转基因食品readuponthesubject研究这个课题Don'tbedaft.别傻了！havemyfoodaltered食物被改变hepatitisBvaccines乙肝疫苗playaroundwith...摆弄playhavocwith扰乱Whenaspeciesdiesoutormutates,ithasaknock-oneffectonthewholeecosystem.党某一物种灭绝或者发生基因突变，它会对整个生态系统产生连锁反应。cynical愤世嫉俗的thehabitatofpolarbears北极熊的栖息地comearoundtomywayofthinking改变思维方式aguineapig试验品（小白鼠）Foodandhealth(食物与健康)ReferenceanswersEX1.TFFFTFEX2.safertightercontrolsvegetablesextictdecreasinginnumberspoorcountrieswholeecosystemFoodandhealth(食物与健康)Classdebate:IsGMFoodBeneficialArgumentsfor:TherehavebeenagreatnumberofstudiestrackingtheeffectsofGMfoodonanimals.ThesestudiesindicatethatGMfoodissafetoconsumeFarmerswhogrowGMcropsusefewerenviornmentallydamagingpesticides.GMcropscanhavelargeryields.TheincreasingyieldsofGMcropsareessentialtofeedingtheworld'sgrowingpopulation.GMfoodcanwithstandcolderweather,droughts,andfloodsArgumentsagainst:GMcropshaveledtoanincreaseinherbricide-and-pesticide-resistantweedsandinsects.Thereisnoscientificconsensusonthelong-termsafetyofGMfood.Introducingageneintoaplantmaycauseunexpectedallergicreactionstopeople.SomeGMfoodshaveantibioticfeaturesbuiltintothem.Peoplewhoconsumethesefoodsmaybecomeresistanttoantibioticdrugs.Foodandhealth(食物与健康)Text2.TruthaboutorganicfoodlabelsThedifferentorganicfoodlabels:Natural:anythingbutorganicContainsorganicingredients:lessthan70%Madewithorganicingredients:atleast70%Organic:atleast95%100%organicTheorganiclabelingomeatanddairyproducts:Grassfed:outdoorsandanaturaldietofgrassFreerange:outdoorsNohormonesaddedFoodandhealth(食物与健康)Referenceanswersfororganiclessthanatleast95%100%theoutdoorsnaturaldietbeingkeptinsmallcagesbeingraisedFoodandhealth(食物与健康)GroupworkDescribethechartbrieflyandgivecommentsonyourownclaims(refertotheusefulexpressionsonP.21)Foodandhealth(食物与健康)Text3.Meatornot-FourtypesofvegetariansWorkingroupsonthefollowingquestions:Canyoulivewithoutmeat?Doyouknowanypersonwhodoesn'tlikeeatingmeat?Haveyoueveraskedthemaboutthereasons?Whydomorepeoplechoosetobecomevegetariansnow?Whatcanpeoplebenefitfromavegetariandiet?Whatarethehealthrisksinbecomingavegetarian?Doyouwanttobeavegetarian?Whyorwhynot?Groupreportfortheanswersofthesequestionsinashortpassage.Foodandhealth(食物与健康)alacto-ovovegetarian:plantfood+diaryproducts+eggsdiaryeggsalactovegetarian:plantfood+diaryproductsanovovegetarian:plantfood+eggsavegan:plantfoodonlyFoodandhealth(食物与健康)ReferenceanswersEX1....EX2.milk,cheese,yoghurtmarinesourcelikemarinealgae,fishoilsupplementdeatmeatEX.3homeworkFoodandhealth(食物与健康)3.ViewingandSpeakingListsomeprocessedfoodswhichyoulikebutmaydoharmtoyourhealthifyoueattoomuchofthem.Andtelluswhyyoulikethem?Canwecompletelyavoidprocessedfoodsinourdailylife?Ifnot,whatmeasurescanwetaketomaintainacomparativelyhealthydiet?LearnthenewwordsandexpressionsonP.24.Foodandhealth(食物与健康)Referenceanswers1.theirnaturalstate,man-madeingredientsshelflife,hydrogen,uptoahalfgram,thesameas,lookold2.bad,good,plastic,cells,communicateortalk,cancer,packagedfoods,fat,desiremore,highbloodtressure3.homeworkWriteacommentonwhatyouhavelearnedfromthevideoclip?Foo