2019译林牛津高考英语一轮导学案：M2U1一、阅读理解Nowadaysmoreandmorepeoplearetalkingaboutgeneticallymodifiedfoods(GMfoods).GMfoodsdevelopfromgeneticallymodifiedorganisms(有机体),whichhavehadspecificchangesintroducedintotheirDNAbygeneticengineeringtechniques.Thesetechniquesaremuchmoreprecisewhereanorganismisexposedtochemicalstocreateanonspecificbutstablechange.Formanypeople,thehightechproductionraisesallkindsofenvironmental,ethical,healthandsafetyproblems.Particularlyincountrieswithlongfarmingtraditions,theideaseemsagainstnature.Infact,GMfoodsarealreadyverymuchapartofourlives.Theywerefirstputonthemarketin2019.AthirdofthecornandmorethanhalfthecottongrownintheU.S.lastyearwastheproductofbiotechnology,accordingtotheDepartmentofAgriculture.Morethan65millionacresofgeneticallymodifiedcropswillbeplantedintheUSthisyear.Thegeneticgenieisoutofthebottle.However,likeanynewproductenteringthefoodchain,GMfoodsmustbesubjectedtocarefultesting.Inwealthycountries,thedebateaboutbiotechisnotsofiercebythefactthattheyhavealargenumberoffoodstochoosefrom,andasupplythatgoesbeyondtheneeds.Indevelopingcountriesdesperatetofeedfastgrowingandunderfedpopulations,thematterissimplerandmuchmoreurgent:dothebenefitsofbiotechoutweightherisks?Thestatisticsonpopulationgrowthandhungeraredisturbing.Lastyeartheworld'spopulationreached6billion.TheUNstatesthatnearly800millionpeoplearoundtheworldareunhealthy.About400millionwomenofchildbearingagedon'thaveenoughiron,whichmeanstheirbabiesareexposedtovariousbirthdefeats.Asmanyas100millionchildrensufferfromvitaminAdeficiency,aleadingcauseofblindness.Howcanbiotechhelp?Geneticengineeringiswidelyusedtoproduceplantsandanimalswithbetternutritionalvalues.Biotechnologistshavedevelopedgeneticallymodifiedriceandtheyareworkingonotherkindsofnutritionallyimprovedcrops.Biotechcanalsoimprovefarmingproductivityinplaceswherefoodshortagesarecausedbycropdamageattributabletodrought,poorsoilandcropviruses.1.Thepassagemainlytalksabout________.A.theworld'sfoodproblemB.thedevelopmentinbiotech页1第C.thegeneticallymodifiedfoodsD.thewaytosolvefoodshortages2.Accordingtothepassage,GMfoods________.A.willreplacenaturallygrownfoodsB.arefarbetterthannaturallygrownfoodsC.mayhelptosolvetheproblemofpoornutritionD.cancauseserioustroubleindevelopingcountries3.Theunderlinedsentence“Thegeneticgenieisoutofthebottle.”inParagraph2probablymeansthat________.A.GMfoodsareavailableeverywhereB.thetechnologyinproducingGMfoodsisadvancedC.genetictechnologymayhaveuncontrollablepowersD.genetictechnologyhascomeoutoflaboratoriesintomarkets4.What'sthewriter'sattitudetowardsGMfoods?A.Enthusiastic.B.Cautious.D.Unbelievable.C.Disapproving.【文章大意】本文是一篇说明文，主要介绍了转基因食品及其对人类生活的影响。1.C【解析】主旨大意题。根据文章内容，特别是第一段中的“Nowadaysmoreandmorepeoplearetalkingaboutgeneticallymodifiedfoods(GMfoods).”可知，本文主要介绍的是转基因食品。2.C【解析】细节理解题。根据最后一段中的“Geneticengineeringiswidelyusedtoproduceplantsandanimalswithbetternutritionalvalues.”可知，转基因食品有助于解决营养不良问题。4.B【解析】观点态度题。根据第三段中的“However,likeanynewproductenteringthefoodchain,GMfoodsmustbesubjectedtocarefultesting.”可知，作者认为转基因食品进入市场前需要严格的检测，由此可见作者对转基因食品的态度是谨慎的。二、词汇练习1.acatwithalotofbrown_________abrownand________creature(毛茸茸的，多毛的...