转基因食物英文课件.ppt

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1、It'sInTheDNA------TheGMFood内容陈述SimpleIntroductionAdvantagesandDisadvantagesApplicationConclusionIIIIIIIVTopicTheGMFoodIIIIVIIISimpleIntroductionGeneticallymodified(GM)foods arefoodsderivedfrom geneticallymodifiedorganisms.Geneticallymodifiedorganismshave

2、hadspecificchangesintroducedintotheirDNAby geneticengineering techniques.theprocessofgeneembeddingIIIIVIIISimpleIntroductionFromthe1980s,AmericahasbeguntheexplorationonGMorganisms.ThefirstbatchofGMfoodsuchastomatohasbeenputintoproductionsince1993.Until20

3、13,GMfoodhastakenupmorethan60%oftheprocessedfoodintheUS.EveninChina,theGMfoodalsohasgraduallyinvadedintothecourseoffoodprocessinginananonymousway.IIIIVIIIAdvantagesandDisadvantagesIncreaseproductionUsingGMtechnologywecanraisetheprductionofthecropsandcat

4、tlessignificantly.IIIIVIIIAdvantagesandDisadvantagesGeneratenewtraitstomeetpeople'sdemandSuchAshehe..IIIIVIIIAdvantagesandDisadvantagesImprovethenutritionalcontentByembeddingspecialgeneinplantsandmakingitexpressed,theplantswillbecomeatreasuryofdifferen

5、tnutritionandavaccineagainstdiseaseIIIIVIIIAdvantagesandDisadvantagesInfact,theGMtechnologycandomuchmorethandescribedabove,especiallywhenourscienceisspeedingup.Atthesametime,itsnoveltyisitsweakness,afterall,theGMtechnologyisnotyetmature.Wehaven'thadalong

6、enoughperiodtoobserveitsoverallinfluenceonthenature.TheGMtechnologymayleadtosomeirreversibledamagesonthesafetyofhumanbodyandenviroment.Whenwefindaflaw,itmustbequitelarge...IIIIVIIIAdvantagesandDisadvantagesIIIIVIIIApplicationAlthoughtheGMtechnologywasbor

7、nandgrowswithcontroversies,theextentofitsapplicationisbecomingmoreandmorelargeallovertheworld.theareaoftheplantationoftheGMFIIIIVIIIApplicationDiffenentcountriesreacttotheGMFindifferentattitudes.FromthetablewecanreadthatAmericaisfairlyoptimisticstowardst

8、heGMF,ontheotherside,theEUappearsquitecautious.IIIIVIIIApplicationAnypositionintheprocessofGMFpopularizationhasitsownreason.ButforChina,thebiggestdevlopingcountrywiththelargestpopulationandrelativelyfewland,thehighestprior