理工英语4第七单元

ABC1Whatwouldyouliketohaveforbreakfast?.Wouldyouliketohaveataste?A.Twistedcruller,Iboughtitthismorning2Doyoueatporridgeeveryday?.B.No,sometimesIdhaveacupofsoybeanmilk,aboiledeggandasteamedbunformybreakfast3WhatisU.Ssexperienceinfoodsafetymanagement?.B.Theyareimprovingthelegalsystemallthetimeandverystrictinlawenforcement4Animalfarmingabouthalfofallhuman-causedgreenhousegases.B.accountsfor5Theyshouldnevertrytopursueprofithealthandlifeofpeople.C.attheexpenseof6Sohowcanwebuysafefood?.C.Whenwechoosefood,wemustremembertocheckitstag,confirmingwhetherthe7Ithinktheotherreasoncanbeidentifiedfromtheindustrializationoffoodproduction..Someillegaltraderscareaboutnothingbutmakingmoney.C.Yes,youbet8Doyoueatporridgeeveryday?.B.No,sometimesIdhaveacupofsoybeanmilk,aboiledeggandasteamedbunformybreakfast9Iamreallybyfreshingredients,intricatecookinganddiversetraditionsofChinesefood.A.fascinated10Someillegaltraderscareaboutnothingbut.B.makingmoney11Ithinktheotherreasoncanbeidentifiedfromtheindustrializationoffoodproduction..Someillegaltraderscareaboutnothingbutmakingmoney.C.Yes,youbet12Sohowcanwebuysafefood?.C.Whenwechoosefood,wemustremembertocheckitstag,confirmingwhetherthebasicinformationismarkedonit13WhatisU.Ssexperienceinfoodsafetymanagement?.B.Theyareimprovingthelegalsystemallthetimeandverystrictinlawenforcement14Thetechnologyhasseveraladvantagesearlierattemptstoengineermeatinvitro.C.comparewith15Theproblemisunevendistribution,870millionsufferingfromhunger.C.leavingABCA.By2050,theworld'spopulationB.isprojectedtoriseto9billionfromjustover7billioncurrently.ProponentsofgeneticallymodifiedfoodssaytheyaresafeandcanboostharvestsB.eveninbadconditionsbyprotectingagainstpests,weedsanddrought.This,theyargue,willbeessentialtomeetingtheneedsofaboomingpopulationindecadestocomeandavoidingstarvation.C.HoweverDougGurian-Sherman,seniorscientistforthefoodandenvironmentprogramattheUnionofConcernedScientists,anadvocacygroup,saidgeneticengineeringforinsectresistancehasprovidedonlyamodestincreaseinyieldssincethe1990sanddrought-resistantstrainshaveonlyA.modestlyreducedlossesfromdrought.ABCAccordingtoexperts,theadvantageofmodifiedfoodisthatithelpsinpreventingtheoccurrenceofallergiesandalsohasalongshelflife.However,amajorportionofthepopulationisagainsttheconsumptionofgeneticallymodifiedfoodandisconcernedaboutitsdisadvantages.Ifyouarealsoconfusedabouttheconsumptionofgeneticallymodifiedfood,readthroughtheprosandconsgivenbelowanddecideforyourself.AdvantagesofGeneticallyModifiedFoodsOneofthemostprominentadvantagesofgeneticallymodifiedfoodisthatithelpsincontrollingtheoccurrenceofcertaindiseases.Certainfoodscauseallergytopeople.TheirgeneticmodificationalterstheDNAsystemofthesefoods,therebymakingthemnon-allergic.Anothermajoradvantageofsuchtypeoffoodsisthattheygrowfasterthantheirtraditionallygrowncounterparts.Asaresult,thereisgreaterproductivityandmorefood.Apersonneednotbotheraboutanyadditionalcosts,suchasbuyingchemicalsandpesticides,whenitcomestogeneticallyengineeredfood.Thefoodisnaturallypest-resistant.Farmingthesefoodscanbeagreatwaytofightworldhunger.Sincethesecropsgrowfasterormoreeffectively,increasedproductionwouldhelpcountrieswhereincropsmaynotnormallyprosperbecauseoflessthandesirableenvironmentalconditions.Theincreasedshelflifeofthesefoodproductshelpsinreducingthequantityofrottenfood.DisadvantagesofGeneticallyModifiedFoodsThebiggestdisadvantageofgeneticallymodifiedfoodisthattheyhaveharmfuleffectsonthehumanbody.Theconsumptionofthesegeneticallyengineeredfoodscanleadtodevelopmentofdiseasesthatareimmunetoantibiotics.Chancesofdevelopingcancerarehighinpeoplewhoregularlyconsumeengineeredfood.Sinceitisanunnaturalwayofproducingfoods,thereisanincreasedhealthhazardsuchasallergens,transferofantibioticresistancemarkersandunknowneffects.Sincetheproductionofengineeredfoodinvolvesinfusinganimalgenesinthecropsandtamperingwithnature,itmightnotbegoodforconsumptioninthelongrun.1.Howdoesgeneticallymodifiedfoodcontroltheoccurrenceofcertaindiseases?CA.Bycross-pollinating.B.Byconventionalcrossbreeding.C.ByalteringtheDNAsystemofthesefoods.2.Dofarmersneedtobuyanychemicalsandpesticidesiftheyplantgeneticallymodifiedfood?BA.Yes,theyneedto.Becausethefoodisnotresisttopests.B.No,theydontneedto.Becausethefoodisnaturallypest-resistant.C.No,theydontneedto.Becausethechemicalsandpesticidesareprovidedbythegovernment.3.Whichstatementisnottheadvantageofgeneticallymodifiedfood?AA.Itmayhaveharmfuleffectsonhumanbody.B.Geneticallymodifiedfoodgrowsfasterthantheirtraditionallygrowncounterparts.C.Farminggeneticallymodifiedfoodcanhelpfightworldhunger.4.Whatwouldhappentoapersonifheregularlyconsumegeneticallymodifiedfood?CA.Hewouldgetcold.B.Hewouldlosesomeweight.C.Hewouldhavecancer.5.Whichtitleisthebestforthispassage?CA.Cangeneticallymodifiedfoodscombatworldhunger?B.Geneticallymodifiedmood:ouranswerisnoC.Geneticallymodifiedfoods:prosandconsTFTheCompanyLeadingtheFutureofFarmingHere'sacrazyidea:Combinebioprintingandtissueengineeringtoprintanimalproductsandtacklesomeoftheplanet'sbiggestproblems.Animalf