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1、科普环保类专项练习学校:___________姓名：___________班级：___________考号：___________题号一总分得分评卷人得分一、阅读理解WhenyouwatchTVprogramsaboutwildanimals,itissurprisingtoseehowanantelope(羚羊)canrunawayfromastronglion.Inthewilderness,everyonehashisownwaytoprotecthimself.Evenplantshavetheirownwaystofight
2、offenemies.Overmillionsofyears,plantshavedevelopedtheirowndefensesystem(防卫系统).Chemicalsarefantasticallyusedbyplantstosurvive(幸存).Bymakingtheirleaves,flowers,rootsandfruitspoisonous(有毒的)toenemies,plantscanfightback.OnesuchplantistheGoldenWattletree.TheBritishscientistDav
3、idCameronhasfoundwhenananimaleatsthetree’sleaves,theamount(数量)ofpoisonincreasesintheotherleaves.“It’sliketheinjuredleavestelephoningtheotherstofighttogetheragainsttheenemy,”hesaid.Thetreealsosendsdefensemessagestoneighboringplantsbygivingoutaspecialsmell.GoldenWattletre
4、esinthenearby45meterswillgetthemessageandproducemorepoisonwithin10minutes.Now,ifanenemyeatstoomanyofthetrees’leaves,hewilldie.Everykindofplantortreeisgoodatproducingaspecialsetofchemicals.Herbivores,likerabbits,cansafelyeattheleavesofonetree,buttheymaybepoisonedbyitsnei
5、ghbor.Inthisway,plantshavenotonlydevelopedtheirowndefensesystem,butalsoshareditwithothers.Thismakesitimpossibleforasingleanimaltodestroyevenasmallareaofforest.1．Fromthefirst2paragraphs,wecanlearnthat_________.A.plantscandonothingagainsttheirenemiesB.chemicalsarequiteuse
6、fulforplantstosurviveC.anantelopecanalwaysrunawayfromastronglionD.leaves,roots,flowersandfruitsofplantsarepoisonous2．IfanimalseatoneGoldenWattletree’sleaves,thetreecan________.A.killtheanimalswithaspecialsmellB.tellothertreestocometoprotectitC.warnothertreesagainstthean
7、imalsonthephoneD.senddefensemessagestotheneighboringplants3．Theunderlinedword“herbivores”inthe5thparagraphprobablymeansanimalswhich_____.A．producepoison B．liveonsmallanimalsC．liketoeatrabbits D．feedon
8、plantsorgrass4．Thelastparagraphofthepassagesuggeststhatthiskindofdefensesystemis________.A．badforanimals
