英语演讲,转基因技术

1Agriculturehightechnology——Transgenictechnology硕生化X班QL学号XXXXXX2Keywordstransgenic[trænz‘dʒenik]转基因的foodscarcity[‘skεəsəti]食物短缺trait[trei,treit]性状，特征fluorescence[fluə‘resns]荧光jellyfish[‘dʒelifiʃ]水母omnipotent[ɔm‘nipətənt]无所不能的conceivable[kən‘si:vəbl]可能的；想得到的hazard['hæzəd]危险3Keywordsirreversible[,iri'və:səbl]不可逆的flaw[flɔ:]瑕疵，裂纹4questionDoyouthinkit`snecessarytoindicateontheouterpackageoftransgenicfood,andwhy?5Transgenictechnologyisanewtechnologythattransfersomehelpfulgenesfromonecreaturetoanotherwithsomespecificbiochemistryandmolecularbiologymethods.ByThesemethodswecanmodifythegeneticmaterialofthecreaturestoimprovetheirproperties、nutritionalcontentandeconomicvalueinordertomeetthedemandofhumanbeings.Transgenictechnology6Atthepresentday,theglobalpopulationisgrowingbyamazingspeedwhilethecultivatedlandareaisdeclining.Foodscarcityhasbecomethehotpotatoinmanycountriesallovertheworld.Currentsituation7ApplicationsOnplantsWecanchangeorimprovethetraitsofplantsbychangingormodifyingtheoriginalgenesorjustintroducingsomenewgenes.8IncreaseproductionApplications9ApplicationsImprovethenutritionalcontentApplicationsImprovethenutritionalcontent10ApplicationsDisease-resistantandPest-resistantDrought-resistantandCold-resistant11ApplicationsGeneratenewtraitsApplicationsGeneratenewtraits12OnanimalsItismoredifficultfornewgenestoexpressinanimalsthaninplants.Butontheotherhand,transgenicanimalscanbringmoreeconomicbenefitsforhumanbeings.Applications13ApplicationsIncreaseproduction14ApplicationsImprovethenutritionalcontent15ApplicationsAsPets16Althoughtransgenicproductsandtransgeniccropsarenotomnipotent.Buttosatisfypeople'sfoodsupply,improvethequalityofthefood,wemustrelyonscienceandtechnology.17ThesafetyoftransgenicproductsSofar,transgenicfoodissafe.Butactually,therearesomanypeoplerefusedtousetransgenicproductsbecausethoseproductsarepotentiallydangerous.18Asfortransgenicbiology,peopleknowverylittleabouttheriskandtheconceivablehazardoftransgenicorganismbecauseofthelackofalargeamountofsamplesandlongtimeforscientificresearch.19Governmentsofmanycountrieshaveestablishedlawstourgethemanufacturerstoputclearlabelsontheouterpacking.20Uptonow,thereisnotransgenicfoodsafetyevaluationprocessandnocorrespondingstandardsandregulationsinChina.Thegovernmenthastotakeactiontoadministratetransgenicfoodsmoreseriously,andcallforrationalconsumption.21Itmustbeverydangerousiftransgenicfoodhastheabilitytochangehumangenesorithasabadeffectontheenvironment.Thesafetyoftransgenicproducts22ThesafetyoftransgenicproductsTransgenicissuesmayleadtosomeirreversibledamages.whenyoufindaflaw,it'squitelarge.Soweshouldpaycloseattentiontotransgenicsecurity.23Thankyouforyourattention~!