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1、Exercise1PARTVREADINGCOMPREHENSIONInthissectionthereareseveralreadingpassagesfollowedbytwentyquestionsorunfinishedstatements,eachwithfoursuggestedanswersmarkedA,B,CandD.Choosetheonethatyouthinkisthebestanswer.Markyouranswersonyouranswersheet.TEXTATransgenictechnolog
2、yhasmadecertaincontributionstoenhancingagriculturalproductivity.Bymanipulatingandcrossingthegenesofcertainspeciesofplants,cropscanbehealthier,bigger,cleanerandtastier--buttheresultis"frankenfood,”productsmadefromthesemodifiedplants.SincetheUnitedStatesbegantogrowgen
3、e-modifiedplantsonalargescalein1996,gene-modifiedfoodshavespreadthroughouttheworldatanamazingspeed.Accordingtoarecentsurvey,thetotalareadevotedworldwidetogene-modifiedcropsincreasedfrom1.7millionhectaresin1996to58.67millionhectaresin2002.About80percentofthistotalwas
4、plantedwithgene-modifiedbeansandcorns.Chinahasgrowngene-modifiedcropsonanareaofmorethan67,000hectaresandapprovedtospreadsixvarietiesofthesecrops,includinggene-modifiedtomatoesandrapes.Gene-modifiedpotatoesandpeppershavealsodebutedonthemarket.Transgenictechnologyhasb
5、eenappliedforgrowingcottonreached1.5millionhectares,accountingforone-thirdofthecountry'stotalcottonoutput.BeginningonMarch20,2002,Chinacarriedoutanewprovisiononmanagementoftransgenicagriculturalproductsthattheproductsprocessedwithgene-modifiedmaterialsmustbelabelled
6、.OnJuly1,2002theMinistryofHealthalsoissuedmeasuresonmanagementofgene-modifiedfood,bywhich,foodscontainingmodifiedgenesmustbelabelled.Recently,however,14brandsofedibleoilprocessedwithgene-modifiedbeansfoundonstoreshelveshadno"gene-modified"labels.Theproducerswereaske
7、dtostopsellingtheoilsandhavetheirproductslabeledwithinalimitedtime.Assomepeoplestilldoubtthesafetyoffrankenfoods,producersdonotliketolabelthem,worriedaboutadropinsales.81."Frankenfood"referstoA.theplantswhosegenesaremanipulatedandcrossedB.thecropsdevelopedwithtransg
8、enictechnologyC.foodthatishealthier,cleanerandtastierD.foodmadefromgene-modifiedplants82.Whichofthefollowingstatementsistrue?A.Thesupplyof
