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TheAfricanelephant,thelargestlandanimalremainingontheearth,isofgreatimportancetoAfricanecosystem(生态系统).Unlikeotheranimals,theAfricanelephantistoagreatextentthebuilderofitsenvironment.Asabigplant-eater
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TheAfricanelephant,thelargestlandanimalremainingontheearth,isofgreatimportancetoAfricanecosystem(生态系统).Unlikeotheranimals,theAfricanelephantistoagreatextentthebuilderofitsenvironment.Asabigplant-eater,itlargelyshapestheforest-and-savanna(大草原)surroundingsinwhichitlives,thereforesettingthetermsofexistenceformillionsofotheranimalsthatliveinitshabitat.
Itistheelephant’sgreatdesireforfoodthatmakesitadisturberoftheenvironmentandanimportantbuilderofitshabitat.Initscontinuoussearchforthe300poundsofplantsitmusthaveeveryday,itkillssmalltreesandunderbushes,andpullsbranchesoffbigtrees.ThisresultsinnumerousopenspacesinbothdeeptropicalforestsandinthewoodlandsthatcoverpartoftheAfricansavannas(热带草原).Intheseopenspacesarenumerousplantsinvariousstagesofgrowththatattractavarietyofotherplant-eaters.
Taketherainforestsforexample.Intheirnaturalstate,thespreadingbranchesoverheadshutoutsunlightandpreventthegrowthofplantsontheforestfloor.Bypullingdowntreesandeatingplants,elephantsmakeopenspaces,allowingnewplantstogrowontheforestfloor.Insuchsituations,theforestsbecomesuitableforlargehoofedplant-eaterstomovearoundandforsmallplant-eaterstogettheirfoodaswell.
WhatworriesscientistsnowisthattheAfricanelephanthasbecomeanendangeredspecies.Iftheelephantdisappears,scientistssay,manyotheranimalswillalsodisappearfromvastareasofforestandsavanna,greatlychangingandworseningthewholeecosystem.
小题1:Whatisthepassagemainlyabout?

A.DisappearanceofAfricanelephants.
B.ForestsandsavannasashabitatsforAfricanelephants.
C.TheeffectofAfricanelephants’searchforfood.
D.TheeatinghabitofAfricanelephants.
小题2:Whatdoestheunderlinedphrase“settingtheterms”mostprobablymean?A.Fixingthetime.B.Worseningthestate.C.Improvingthequality.D.Decidingtheconditions.小题3:Accordingtothepassage,whichofthefollowingstatementsisTRUE?

梁伟成回答:
  小题1:C小题2:D小题3:B小题4:A   文章讲述了非洲大象对生态的影响,并解释了具体的原因。小题1:主旨大意题。文章正是讲述了非洲大象对生态的影响。小题2:猜测词义题。根据上下文可知大象对生态的影响很大;这里是指大象形成了它所生活的大草原的环境,决定了其它一些生活在栖息地的动物的情况。小题3:细节题。根据第二段2,3行.Initscontinuoussearchforthe300poundsofplantsitmusthaveeveryday,itkillssmalltreesandunderbushes,andpullsbranchesoffbigtrees.小题4:写作方法。文章采用的写作方法是先说明影响,然后解释了具体的原因。
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《TheAfricanelephant,thelargestlandanimalremainingontheearth,isofgreatimportancetoAfricanecosystem(生态系统).Unlikeotheranimals,theAfricanelephantistoagreatextentthebuilderofitsenvironment.Asabigplant-eater|小学英语问答-字典翻译问答网》
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