2020版高考英语一轮复习Module3TheViolenceofNature练习（含解析）外研版必修3

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1、Module3　TheViolenceofNatureⅠ.话题延读TheAfricanelephant,thelargestlandanimalremainingonearth,isofgreatimportancetoAfricanecosystem.Unlikeotheranimals,theAfricanelephantistoagreatextentthebuilderofitsenvironment.Asabigplant-eater,itlargelyshapestheforest-and-savanna(大草原)s

2、urroundingsinwhichitlives,thereforesettingthetermsofexistenceformillionsofotheranimalsthatliveinitshabitat.Itistheelephant’sgreatdesireforfoodthatmakesitadisturberoftheenvironmentandanimportantbuilderofitshabitat.Initscontinuoussearchforthe300poundsofplantsitmusthave

3、everyday,itkillssmalltreesandunder-bushes,andpullsbranchesoffbigtrees.ThisresultsinnumerousopenspacesinbothdeeptropicalforestsandinthewoodlandsthatcoverpartoftheAfricansavannas.Intheseopenspacesarenumerousplantsinvariousstagesofgrowththatattractavarietyofotherplant-e

4、aters.Taketherainforestsforexample.Intheirnaturalstate,thespreadingbranchesoverheadshutoutthesunlightandpreventthegrowthofplantsontheforestfloor.Bypullingdowntreesandeatingplants,elephantsmakeopenspaces,allowingnewplantstogrowontheforestfloor.Insuchsituationsthefores

5、tsbecomesuitableforlargehoofedplant-eaterstomovearoundandforsmallplant-eaterstogettheirfoodaswell.WhatworriesscientistsnowisthattheAfricanelephanthasbecomeanendangeredspecies.Iftheelephantdisappears,scientistssay,manyotheranimalswillalsodisappearfromvastareasofforest

6、andsavanna,greatlychangingandworseningthewholeecosystem.1.Whatdoestheunderlinedphrase“settingtheterms”mostprobablymean?　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　A.Improvingthequality.B.Worseningthestate.C.Fixingthetime.D.Decidingtheconditions.2.Thepassageisdevelopedmainlyb

7、y　　　. A.showingtheeffectandthenexplainingthecausesB.givingexamplesC.pointingoutsimilaritiesanddifferencesD.describingthechangesintimeorder3.Whatisthepassagemainlyabout?A.ForestsandsavannasashabitatsforAfricanelephants.B.TheeatinghabitofAfricanelephants.C.Disappearanc

8、eofAfricanelephants.D.TheeffectofAfricanelephants’searchforfood.4.Whatdoweknowabouttheopenspacesinthepassage?A.Theyarehometomanyend