转基因食品演讲稿

1、Yang1CharlesYangMrs.LeagueHonorsAmericanLiterature,4thperiod8November2014SpeechtocontroversyofGeneticallyModifiedFoodGeneticallymodifiedfoodsarefoodsderivedfromgeneticallymodifiedorganisms.GeneticallymodifiedorganismshavehadspecificchangesintroducedintotheirDNAbygeneticengineering,usingaprocessofeithercisgenesisortransgenesis.Geneticallymodifiedfoodswerefirstputonthemarketintheearly1990s.Typically,geneticallymodifiedfoodsaretransgenicplantproducts:soybean,corn,canola,andcottonseedoil.Lastyear,t。

2、heDepartmentofAgricultureawardedthesafetycertificatetotwokindsoftransgenicrice,andthistriggeredalarge-scalediscussion.Manypeopleopposeditandrefusedtoeatgeneticallymodifiedfoods.Theyobjectedtogeneticallymodifiedfoodsonseveralgroundssuchas:geneticallymodifiedfoodshavenotbeenasuccess,thereisnotestinhumanbeing;geneticallymodifiedfoodsmaybechangehumangenesinfuture;geneticallymodifiedfoodswillaffectotherplantsaroundthemandchangeotherspecies,thenmoreandmorespecieswillvaryordisappear;geneticallymodified。

3、foodshavetheadvantageinbothpriceandoutputsothatfewcompanieswhohavetransgeneproprietarytechnologywillcontrolfoodmarket.Accordingtoarecentsurveyofstudent'sopiniontowardsgeneticallymodifiedfoodshereinWaltonHighSchool,almost90percentofthembelievethatthegeneticallymodifiedfoodisnotsafetotheirhealthandrefusetopurchase.ButtheYang2funniestthingisalmost85%ofthemshowlackofunderstandinghowthegeneticallymodifiedfoodpossiblydamagetheirhealth.Peoplearedeeplymisunderstoodandevenhaverepellentpsychologybecauseof。

4、thelong-timenegativepublicopinion.Peopleeatgeneticallymodifiedfoods,thenthefoodsareabsorbedlikenormalfoods,thereisnotheorytosupportthatgeneticallymodifiedfoodswillchangehumanbeing’sgenes.Actually,moreandmoregeneticallymodifiedfoodsappearinourlives.Whenyouhavedinnerintherestaurant,maybeyoueatthegeneticallymodifiedoilandgeneticallymodifiedcornandgeneticallymodifiedrice,butyoujustdon’tknow.Doyouwanttoseeaworldwithhungers?Thereisaseverefoodsupplyissueinthedevelopingworldwherewewilleitherthriveordie,。

5、inordertomeetthedemandforfoodandconfrontingtheclimatechangeweneedtoincreaseuseofgeneticallymodifiedcrops.Itissciencewhichbringsustheonlysolution.Nowwithlessandlesscultivatedlandarea,geneticallymodifiedfoodwillplayamoreandmoreimportantroleiftheuseoftransgenictechnologycansolvetheworldfoodshortageproblem.Thegeneticallymodifiedcropsuselesspesticidewhichissaferthannormalcrops.Farmershavewitnessedtheadvantagesofgeneticallymodifiedcropsfirsthandthroughincreasesintheiryieldsandprofit,anddecreasesinthei。

6、rlabor,energyconsumption,pesticideuseandgreenhousegasemissions.FarmersgrowinggeneticallymodifiedriceinfieldtrialsinChinareporthighercropyields,reducedpesticideuseandfewerpesticiderelatedhealthproblems.AccordingtoastudybyresearchersinChinaandbytheUniversityofCalifornia,DavismeasuresonaperhectarebasisthatthequantityandcostofpesticidesappliedtotheconventionalriceYang3was8to10timesashighasthatappliedtotheinsect-resistantgeneticallymodifiedrice.Geneticallymodifiedfoodintheworldnowisanewthing;anewthin。

7、gpeopleneedtimeforpeopletopromoteitsacceptance.Scienceandtechnologyisadouble-edgedswordwhichimplieseventheperfectionhasitsdisadvantages.Geneticallymodifiedfoodandnutritioninsidearenotharmfultopeoplebutthesamehealthyasnaturalfoods.Thespreadofpeople’sworriesisunderstandable.Ittakestimetoacceptanewthing;ultimatelywewillseethebenefitsofit.“Alltruthpassesthroughthreestages.First,itisridiculed.Second,itisviolentlyopposed.Third,itisacceptedasbeingself-evident,”asArthurSchopenhauerwouldsay.Ofcourse,inou。

8、rcountry,thenewgrainlawimposessomemorerigorousrule.Forexample,thegeneticallymodifiedorganism’sresearch,experiments,productions,sales,importsandexportsshouldbefollowedtothecountry'slaws,andeveryindividualpersonandunitarenotallowedtoimplygeneticallymodifiedtechnologyatprinciplegraincultivarswithoutauthorization.Weshouldgiveourrefrigeratorandtrusttogeneticallymodifiedfoods.Youcantakethebiotechnologyoutofthecountrybutyoucannottakethecountryoutofthebiotechnology.Istronglybelievethatbiotechnologyisane。

9、ssentialpartofthetoolboxtofeedtheworldsustainablyinthefuture.Weneedcropsthatareresistanttonewdiseases,thatcancopewithachangingclimateandthatenableustofeedanincreasinghumanpopulationwhileminimizingtheenvironmentalimpactofagriculture.Yang4WorksCitedUCDavis.“No-tillagriculturemaynotbringhoped-forboostinglobalcropyields,studyfinds”=11062October22,2014CharlesYang.“SurveyofGMOs”。