2019-2020年高考英语二轮复习 阅读理解月练（1）

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1、2019-2020年高考英语二轮复习阅读理解月练（1）[史地自然型阅读理解(二)]Animalscanmovefromplacetoplace,butplantscannot.Whenananimalisunderattack,itcanrunawayorfightback.Plantscertainlycannotrunaway,andtheylackteethandclaws.Butplantscandefendthemselvesbyusingbothphysicalandchemicalmeans

2、.Someplantshavetheirownwaystokeepanimalsaway.Forexample,theleavesofthehollyplanthavesharpspines(刺)thatdiscouragegrasseatinganimals.Hollyleavesonlowerbrancheshavemorespinesthanleavesonupperbranches.Thisisbecausethelowerleavesareeasierformostanimalstoreach

3、.Someplants,suchastheoaktree,havethickandhardleavesthataredifficultforanimalstoeat.Somegrassesmaycontainasandymaterial;eatingsuchgrasseswearsdowntheanimal'steeth.Manyplantsalsohavechemicaldefenses.Someplantsproducechemicalsthattastebitterorcauseanunpleasa

4、ntreaction.Someplantsmayfightagainstanattackbyincreasingtheproductionofthesechemicals.Whenacaterpillar(毛虫)bitesatobaccoleaf,theleafproducesachemicalmessenger.Thismessengersendstotherootstheinformationtoproducemorenicotine.Thehigherlevelsofnicotinediscoura

5、gethecaterpillar.Manyplantsdependonbothphysicalandchemicaldefenses.AcertainplantinChina,forinstance,hasprickly(多刺的)leaves,andeachpricklecontainspoisonousvenom(毒液).Asingleexperiencewiththiskindofplantwillteachananimaltostayawayfromitinthefuture.1．Thehollyp

6、lanthasmorespinesonthelowerleavesbecausemostanimals________．A．arenottallenoughB．likethelowerleavesonlyC．arenotcleverenoughD．cangetthelowerleaveseasily2．Todefendthemselves,oaktreesuse________．A．chemicalmeansB．physicalmeansC．bitterchemicalsD．sandymaterials3

7、．Howdoestobaccoprotectitselfagainstanattackfromacaterpillar?A．Itsleavesfightagainsttheattackbyphysicalmeans.B．Itsrootssendamessengertodiscouragethecaterpillar.C．Itsrootsincreasetheproductionofnicotinewhenitisattacked.D．Itsleavesproducepoisonoussandtodrive

8、thecaterpillaraway.4．Whatwouldbethebesttitleforthispassage?A．PlantsandanimalsB．HowplantsdefendthemselvesC．AttacksanddefensesD．Howanimalseatplantleaves【要点综述】本文主要讲述的是不能移动的植物是如何保护自己的。1．D　细节理解题。根据文章第二段中“Forexample，thele