武汉大学《大学英语4》2015

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1、AsaresultofpeopleeatingGMFand,infact,thesoybeansgrowninmostpartsoftheworldweregeneticallymodifiedmorethan20yearsagoandappeartohavehadnonegativeeffectsonhealth・Anotherimportantpointisthis;ifaproductispotentiallydangerous,tobaccoproductsforexample,thebenefitsofremovingtheharmfulchemicalsbyg

2、eneticmodificationareobvious・GMcropsareoftenmaderesistanttodiseasecausedbybacteria,virusesandfungi,butthistreatmentoftenkillsbeneficialinsectssuchasbees,whichareessentialforthesuccessfulfertilizationofmanyplantspecies,AveryseriousdisadvantageofGMcropsisthattheyarcallverysimilargenetically

3、andthismeansthattheymayhavefewdefensesagainstnewformsofvirusesandfungi,Scientistshavealreadyshownhowquicklyaviruscanchangeitsformtoovercometheresistanceofitsvictim.DevelopedcountrieshavedifferentattitudestoGMF,EuropeansaremoredoubtfulthanAmericansaboutthebenefitsandsoEuropeancountrieshave

4、tougherregulationsonfoodproductionthantheUSA・InsomecountriesGMFisbannedwhileinothersitmustbeclearlylabeledsothatpeopleareawareofwhattheyarebuying.Largecompanies-一usuallyAmericanones™whichhavespentitgreatdealofmoneyontheresearchanddevelopmentofGMcropsareencouragingthefarmersindevelopingcou

5、ntriestogrowthenewcropsratherthattraditionalonesandindeedfarmersarcbecomingincreasinglydependentontheGMcompanies.IntheGMFdebate,itisimpossibletosaywhoisright,orindeedifeithersideisright.Whatisclear,however,isthatwerequirecarefulexperimentation,publicconsultationandstrictgovernmentregulati

6、onoftheprocessofGMfooddevelopment.31.GMcropsdonothavetobetreatedwithchemicalssuchasfertilizersorpesticidesandthiswillbenefitthenaturalenvironment.A32.Sincegeneticallymodifiedcropswillnotonlyfeedtheworld'spopulationbutwillalsohelptosavetheEarth'snaturalenvironment,theadvantagesofGMFoutweig

7、hthedisadvantages.C33.ExistingGMcrops(e.g・soybeans)appearnottohaveharmedthehealthofconsumers・B34.GMcropsaresimilargeneticallyandmayhaveastrongdefenseagainstnewformsofvirusesandfungi.B35.AllthedevelopedcountriesbelievethatGMfoodisbeneficialandtheyareencouragingthefar