2016 高二英语水平测试

《2016 高二英语水平测试》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、TheAfricanelephant,thelargestlandanimalremainingonearth,isofgreatimportancetoAfricanecosystem（生态系统）.Unlikeotheranimals,theAfricanelephantistoagreatextentthebuilderofitsenvironment.Asabigplant-eater,itlargelyshapestheforest-and-savanna（大草原）surroundingsinw

2、hichitlives,thereforesettingthetermsofexistenceformillionsofotheranimalsthatliveinitshabitat.Itistheelephant’sgreatdesireforfoodthatmakesitadisturberoftheenvironmentandanimportantbuilderofitshabitat.Initscontinuoussearchforthe300poundsofplantsitmusthavee

3、veryday,itkillssmalltreesandunder-bushes,andpullsbranchesoffbigtrees.ThisresultsinnumerousopenspacesinbothdeeptropicalforestsandinthewoodlandsthatcoverpartoftheAfricansavannas.Intheseopenspacesarenumerousplantsinvariousstagesofgrowththatattractavarietyof

4、otherplant-eaters.Taketherainforestsforexample.Intheirnaturalstate,thespreadingbranchesoverheadshutoutsunlightandpreventthegrowthofplantsontheforestfloor.Bypullingdowntreesandeatingplants,elephantsmakeopenspaces,allowingnewplantstogrowontheforestfloor.In

5、suchsituations,theforestsbecomesuitableforlargehoofedplant-eaterstomovearoundandforsmallplant-eaterstogettheirfoodaswell.WhatworriesscientistsnowisthattheAfricanelephanthasbecomeanendangeredspecies.Iftheelephantdisappears,scientistssay,manyotheranimalswi

6、llalsodisappearfromvastareasofforestandsavanna,greatlychangingandworseningthewholeecosystem.21.Whatdoestheunderlinedphrase“settingtheterms”mostprobablymean?A.Improvingthequality.B.Worseningthestate.C.Fixingthetime.D.Decidingtheconditions.22.Thepassageisd

7、evelopedmainlyby_________.A.showingtheeffectandthenexplainingthecausesB.givingexamplesC.pointingoutsimilaritiesanddifferencesD.describingthechangesinspaceorder23.Whatisthepassagemainlyabout?A.ForestsandsavannasashabitatsforAfricanelephants.B.Theeatinghab

8、itofAfricanelephants.C.DisappearanceofAfricanelephants.D.TheeffectofAfricanelephants’searchforfood.24.Whatdoweknowabouttheopenspacesinthepassage?A.TheyarehometomanyendangeredanimalsB.Theyresultfromthedestructionofrainfores