备战2021届高考英语名校全真模拟卷1月卷7（学生版）.docx

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1、备战2021年高考全真模拟卷·1月卷第七模拟(时间：120分钟满分：120分)选择题部分第一部分　阅读理解(共两节，满分50分)第一节(共15小题；每小题2.5分，满分37.5分)阅读下列短文，从每题所给的四个选项A、B、C和D中，选出最佳选项。A（2020·江苏启东中学高三月考）Nexttimeyourplanelands,listentothesoundofthetyreshittingtheground.Thereasonthetyresdon’texplodeisbecausetheyaremadeofnaturalrubber.Thetyresofcars,

2、motorbikesandtrucksarealsooftenmadeofthesamestuff.Naturalrubbercomesfromtrees,Workerscutthetrunksofthetreesandcollectawhiteliquidcalledlatex.Inthenineteenthandearlytwentiethcenturies,hugenumbersofrubbertreeswereplantedincountriesincludingMalaysia,BurmaandBrazil.Morethanacenturyago,scien

3、tistsdiscoveredhowtomakeman-maderubber,butnaturalrubberismuchstrongerandcanlastmuchlonger.Nearlyhalftherubberwhichisproducedeachyearisnaturalrubberandthereisalwaysaneedformore.Rubbertreesarenoteasytogrow.Theyareaffectedbychangesintemperature,tomuchornotenoughrain,highwindsanddisease.Som

4、etreessurvivewhileothersdieandit’salldowntotheirgenes.TwoBritishorganizations,theTunAbdulRazakResearchCenter(TARRC)andTheGenomeAnalysisCenter(TGAC),havebeenworkingtogethertolookatrubbertrees.ThisisthegenesfittogetherinverylongchainsofDNA．Thegenomeforaplantsuchasarubbertreeoranimalneedst

5、ogrow.Thegenomecontainsalltheinformationtheplantoranimalneedstogrow.Thegenomeforaplantsuchasarubbertreeissmallerthanahumangenomebutitisstillverylong,whichiswhyithasbeensodifficulttofind.AsEwanMollisonofTARRCsays,theworkhasbeenlikeputtingapicturepuzzletogetherwhereallthepiecesshowbluesea

6、andbluesky.Nowscientistscanusetherubbertreegenometoproducestrongertrees.Byunderstandingthegenome,theycanchangetheDNAinrubbertreesinusefulways.Theycanalsodoitmuchfasterthanbefore.Inthefuture,itwillbepossibletogrowtreeswhichsurviveclimatechangeanddisease.1．Whatcharacteristicsofnaturalrubb

7、ercanbeinferredfromParagraph1?A．Inexpensive.B．FlexibleC．ConductiveD．Explosive.2．Whatmadenaturalrubbersodemandingeachyear?A．QuantitiesofrubbertreeswereplantedinSoutheastAsiaB．Rubbertreesarenoteasilyaffectedbytheclimatechange.C．Bynowscientistshaven’tdiscoveredhowtomakeman-maderub