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1、高考英语阅读专题训练系列40分钟定时训练姓名:班级:得分:错题号:阅读理解训练题(一)1科普知识类1.(2011·陕西卷)DEversincetheywerefirstputonthemarketintheearly1990s,genticallymondified(GM,转基因)foodshavebeenincreasinglydevelopedandmarketedinmanycountriesintheworld,mainlyonthebasisoftheirpromisetoendtheworldwidefoodcrisis
2、.ButcanGMtechnologysolveworldhungerproblems?Evenifitwould,isitthebestsolutiorr?Despitewhatitpromiises,GMtechnologyactuallyhasnotincreasedtheproductionpotentialofanycorp.InfactStudiesshowthatthemostcrownGMcroo.GMsoybeans,hassufferedreducedproductivity.Forinstance,arepor
3、tthananalysednearlytwodecadesofresearchonmojorGMfoodcropsshowsthatGMengineeringhasfailedtosignificantlyincreaseUScropproduction.Somethingelse,however,hasbeenontherise,WhileGMseedsareexpensive,GMcompanicstellfarmersthattheywillmakegoodprofitsbysavingmoneyonpesticides(杀虫
4、剂).Onthecontrary,USgovernmentdatashowthatGMcropsintheUShaveproducedanoverallincreaseinpesticideusecomparedtotraditionalcrops.“Thepromisewasthatyoucoulduselesschemicalsandboostproduction.Butneitheristrue,”saidBillChristison,PresidentoftheUSNationalFarmCoalition.Atthesam
5、etime,theauthorsofthebookWorldHunger:TwelveMythsarguethatthereactuallyismorethanenoughfoodintheworldandthatthehungercrisisisnotcausedbyproduction,butbyproblemsinfooddistributionandpolitics.Theseindeeddeserveoureffortsandmoney.Meanwhile,theriseinfoodpricesresultsfromthe
6、increaseduseofcropsforfuelratherthanfood,accordingtoa2008WorldBankreport.Asamatteroffact,scientistsseebetterwaystofeedtheworld.AnotherWorldBankreportconcludedthatGMcropshavelittletooffertothechallengesofworldwidepovertyandhunger,becausebetterwaysoutareavailable,amongwh
7、ich“green”farmingissupposedtobethefirstchoice.57.Theauthordevelopsthesecondparagraphmainly.A.byclassificationB.bycomparisonC.byexampleD.byprocess58.Whatdoestheunderlinedword“boost”inthethirdparagraphprobablymean?A.Control.B.EvaluateC.Obtain.D.Increase.59.GMcompaniespro
8、misefarmersthattheywillbenefitfrom______________.A.practicing“green”farmingB.useoflesschemicalsC.fairdistributionofth