資源描述:
《the world has a fast growing population and people閱讀理解答案》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫。
1、Theworldhasafastgrowingpopulationandpeople閱讀理解答案 Theworldhasafastgrowingpopulationandpeopleneedmorelandforhouses,factories,highways,andsoon.Thefarmlandisdecreasingwitheachpassingday.Howtomeettheneedoffeedingthegrowingpopulation?Onewayistointroducesomehigh-outputg
2、eneintoacroptoenableittoproducemore.Biologistsovertheyearshavediscoveredgeneswhichcanraiseoutputofthecrops,resistpests,improvetaste,etc. However,inmanywesterncountriesthereiswidespreadconcernoverthesafetyof“GeneticallyModified”(GM)(轉(zhuǎn)基因)foods,becausetheythinkthere
3、maybeseriousproblemsofenvironment,health,safety,moralityandsoon. AsascientistImustadmitGMfoodsinvolvegreatriskstohumans.InfactinEuropethey’recalled“Frankensteinfoods”bymany.Frankensteinisacharacterinanovel.Hewasaverycleverscientist.Hecreatedamonster(怪物),whicheven
4、tuallykilledhim. Soybeanscanbemadeintomanyfoods.However,it’shardtotracethem.Therefore,it ’sveryimportantwehavetomakesurethesoybean,ifgeneticallymodified,isfreefromanypoisonousmatterharmfultohumanbeings.Forthisweneedverygoodtesting.Wedohavesometestingonsomeanim
5、als,butnocompletelysatisfactorytestinghaseverbeenmadesofar.They’reentirelynew,andtheirproblemsareentirelyunknown.Ittakestimetodeveloppersuasiveteststoknowwhetherthey’reharmfultousornot. WemaynotbeabletotellwhatmayhappenifwetakeGMfoods.Someofthemmayberesistanttoan
6、tibiotics(抗生素).ThenmanyofthemedicineswehavetodaywillhavenoeffectonpeopleeatingGMfoods. AmorelikelycaseistheGMfoodsmaycontaingenessomepeopleareallergicto. GMproductshavealreadycomeintoourlivesbutmostpeopleevenknownothingaboutit.Atleastwehavetobeclearaboutwhatwear
7、eeating.TheChinaConsumersAssociationiscallingforlabeling(標注)onGMfoodssothatconsumerswillknowbeforetheybuythem. 50.The chiefpurposeofdevelopingGMfoodsisto_. A.makethefoodsmuchcheaperB.feedthefastgrowingpopulation C.makethefoodsmuchtastierD.killpestsonthecrops
8、 51.Fromthepassagewecaninferthat___________. A.Frankensteinfoodscanmakepeopleclever B.manyEuropeansrejectGMfoodsC.GMfoodsareverypopularinEurope D.Fr