2014年12月英语六级长篇阅读匹配练习题2

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1、2014年12月英语六级长篇阅读匹配练习题2　GeneticallyModifiedFoods--FeedtheWorld?　　[A]Ifyouwanttosparkaheateddebateatadinnerparty,bringupthetopic　aboutgeneticallymodifiedfoods.Formanypeople,theconceptofgeneticallyaltered,high-techcropproductionraisesallkindsofenvironmental,health,safetyandethicalquest

2、ions.Particularlyincountrieswithlongagrariantraditions--andvocalgreenlobbies--theideaseemsagainstnature.　　[B]Infact,geneticallymodifiedfoodsarealreadyverymuchapartofourlives.Athirdofthecornand　morethanhalfthesoybeansandcottongrownintheU.S.lastyearweretheproductofbiotechnology,accord

3、ingtotheDepartmentofAgriculture.Morethan65millionacresofgeneticallymodifiedcropswillbeplantedintheU.S.thisyear.Thegeneticisoutofthebottle.　　[C]Yetthereareclearlysomeveryrealissuesthatneedtoberesolved.Likeanynewproductenteringthefoodchain,geneticallymodifiedfoodsmustbesubjectedtorigo

4、roustesting.Inwealthycountries,thedebateaboutbiotechistemperedbythefactthatwehavearicharrayoffoodstochoosefrom--andasupplythatfarexceedsourneeds.Indevelopingcountriesdesperatetofeedfast-growingandunderfedpopulations;theissueissimplerandmuchmoreurgent:Dothebenefitsofbiotechoutweighth

5、erisks?　　[D]Thestatisticsonpopulationgrowthandhungeraredisturbing.Lastyeartheworld'spopulationreached6billion.Andby2050,theUNestimates,itwillbeprobablynear9billion.Almostallthatgrowthwilloccurindevelopingcountries.Atthesametime,theworld'savailablecultivablelandperpersonisdeclining.A

6、rablelandhasdeclinedsteadilysince1960andwilldecreasebyhalfoverthenext50years,accordingtotheInternationalServicefortheAcquisitionofAgri-BiotechApplications(ISAAA).　　Howcanbiotechhelp?　　[E]Biotechnologistshavedevelopedgeneticallymodifiedricethatisfortifiedwithbeta-carotene(胡萝卜素)--whic

7、hthebodyconvertsintovitaminA--andadditionaliron,andtheyareworkingonotherkindsofnutritionallyimprovedcrops.Biotechcanalsoimprovefarmingproductivityinplaceswherefoodshortagesarecausedbycropdamageattributiontopests,drought,poorsoilandcropviruses,bacteriaorfungi(真菌).　　[F]Damagecausedbyp

8、estsisincredible.Th