[单选]  二、阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。（课外选材）Accordingtoexperts,theadvantageofmodifiedfoodisthatithelpsinpreventingtheoccurrenceofallergiesandalsohasalongshelflife.However,amajorportionofthepopulationisagainsttheconsumptionofgeneticallymodifiedfoodandisconcernedaboutitsdisadvantages.Ifyouarealsoconfusedabouttheconsumptionofgeneticallymodifiedfood,readthroughtheprosandconsgivenbelowanddecideforyourself.AdvantagesofGeneticallyModifiedFoods●Oneofthemostprominentadvantagesofgeneticallymodifiedfoodisthatithelpsincontrollingtheoccurrenceofcertaindiseases.Certainfoodscauseallergytopeople.TheirgeneticmodificationalterstheDNAsystemofthesefoods,therebymakingthemnon-allergic.●Anothermajoradvantageofsuchtypeoffoodsisthattheygrowfasterthantheirtraditionallygrowncounterparts.Asaresult,thereisgreaterproductivityandmorefood.●Apersonneednotbotheraboutanyadditionalcosts,suchasbuyingchemicalsandpesticides,whenitcomestogeneticallyengineeredfood.Thefoodisnaturallypest-resistant.●Farmingthesefoodscanbeagreatwaytofightworldhunger.Sincethesecropsgrowfasterormoreeffectively,increasedproductionwouldhelpcountrieswhereincropsmaynotnormallyprosperbecauseoflessthandesirableenvironmentalconditions.●Theincreasedshelflifeofthesefoodproductshelpsinreducingthequantityofrottenfood.DisadvantagesofGeneticallyModifiedFoods●Thebiggestdisadvantageofgeneticallymodifiedfoodisthattheyhaveharmfuleffectsonthehumanbody.Theconsumptionofthesegeneticallyengineeredfoodscanleadtodevelopmentofdiseasesthatareimmunetoantibiotics.●Chancesofdevelopingcancerarehighinpeoplewhoregularlyconsumeengineeredfood.●Sinceitisanunnaturalwayofproducingfoods,thereisanincreasedhealthhazardsuchasallergens,transferofantibioticresistancemarkersandunknowneffects.●Sincetheproductionofengineeredfoodinvolvesinfusinganimalgenesinthecropsandtamperingwithnature,itmightnotbegoodforconsumptioninthelongrun. Howdoesgeneticallymodifiedfoodcontroltheoccurrenceofcertaindiseases?   A.Bycross-pollinating.B.Byconventionalcrossbreeding.C.ByalteringtheDNAsystemofthesefoods.2.Dofarmersneedtobuyanychemicalsandpesticidesiftheyplantgeneticallymodifiedfood?   A.Yes,theyneedto.Becausethefoodisnotresisttopests.B.No,theydon’tneedto.Becausethefoodisnaturallypest-resistant.C.No,theydon’tneedto.Becausethechemicalsandpesticidesareprovidedbythegovernment.3.Whichstatementisnottheadvantageofgeneticallymodifiedfood?   A.Itmayhaveharmfuleffectsonhumanbody.B.Geneticallymodifiedfoodgrowsfasterthantheirtraditionallygrowncounterparts.C.Farminggeneticallymodifiedfoodcanhelpfightworldhunger.4.Whatwouldhappentoapersonifheregularlyconsumegeneticallymodifiedfood?   A.Hewouldgetcold.B.Hewouldlosesomeweight.C.Hewouldhavecancer.5.Whichtitleisthebestforthispassage?   A.Cangeneticallymodifiedfoodscombatworldhunger?B.Geneticallymodifiedmood:ouranswerisnoC.Geneticallymodifiedfoods:prosandcons