高考英语(人教)一轮预热自练巩固题必修2U2及答案.docx

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1、2019高考英语（人教）一轮预热自练巩固题必修2U2及答案***阅读理解TheAmazonbasinregionishometoabout2.5millioninsectspecies，tensofthousandsofplants，andsome2000birdsandmammals.Todate，atleast40000plantspecies,3000fish,1294birds,427mammals,428amphibians，and378reptileshavebeenscientif

2、icallyclassifiedintheregion.OneinfiveofallthebirdsintheworldliveintherainforestsoftheAmazon.Thewarmwetforestshavebeeninexistencefor55millionyears，andthrivedevenduringglacialperiods，allowingfortheevolutionofanunbelievablediversityofspecies.Radiocarbon

3、dating(放射性碳年代测定)hasrevealedtreesof10centimeterdiametertobemorethan300yearsold，andsometreesover1000yearsold，indicatingthatuntouchedforestscanexperienceunbelievablelongevity.ThefirsthumaninhabitantsarethoughttohavesettledintheAmazonregionabout11200year

4、sago.Europeanexplorersarrivedinthe16thcentury，bringingdiseaseswhichtraveledfasterthantheexplorersthemselves，killingperhapsasmanyas90%oftheindigenousinhabitants(土著居民)．Bythelate17thcenturytheAmazonbasinwascontrolledbyPortugueseandSpanishexplorers.TheAm

5、azonrainforesthasbeendescribedasthelungsofourplanetbecauseofitsimportantroleinrecyclingcarbondioxideintooxygen.Butduetodeforestation(采伐森林)，rainforestsnowcoverlessthan5%oftheEarth'slandsurface，andexpertsbelievethatthisisabigcontributortoglobalclimatec

6、hange.Severedeforestationbeganinthe20thcentury，with587000squarekilometerslostuptotheyear2019.Mostdeforestedlandisusedforgrasslandtoraisefarmanimalsandagriculture.Theadditionoftransportrouteshasledtoincreasedsettlementanddeforestation，andatthepresentr

7、ate，scientistsestimatethattheAmazonrainforestwillbereducedby40%intwodecades.1．WhyarethefiguresmentionedinParagraph1?A．Toprovetheforestuntouched.B．Toclassifyspeciesscientifically.C．Toshowthediversityofspecies.第1页D．ToattractmoreattentiontoAmazon.2．Whyd

8、idmostindigenousinhabitantsintheAmazonregiondie?A．Europeanexplorersbroughtdiseasesthere.B．Portugueseexplorerstreatedthembadly.C．Alotoftreeswerecutdownandburned.D．TheygotkilledbySpanishexplorers.3．WhatcanbeinferredabouttheAmazonrainforest?A．Ithasthela