2019版高考英语 Unit 6 Design夯练（含解析）北师大版必修2

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1、Unit6Design一、阅读理解。TheAmazonbasinregionishometoabout2.5millioninsectspecies，tensofthousandsofplants，andsome2000birdsandmammals.Todate，atleast40000plantspecies,3000fish,1294birds,427mammals,428amphibians，and378reptileshavebeenscientificallyclassifiedintheregion.On

2、einfiveofallthebirdsintheworldliveintherainforestsoftheAmazon.Thewarmwetforestshavebeeninexistencefor55millionyears，andthrivedevenduringglacialperiods，allowingfortheevolutionofanunbelievablediversityofspecies.Radiocarbondating(放射性碳年代测定)hasrevealedtreesof10centim

3、eterdiametertobemorethan300yearsold，andsometreesover1000yearsold，indicatingthatuntouchedforestscanexperienceunbelievablelongevity.ThefirsthumaninhabitantsarethoughttohavesettledintheAmazonregionabout11200yearsago.Europeanexplorersarrivedinthe16thcentury，bringing

4、diseaseswhichtraveledfasterthantheexplorersthemselves，killingperhapsasmanyas90%oftheindigenousinhabitants(土著居民)．Bythelate17thcenturytheAmazonbasinwascontrolledbyPortugueseandSpanishexplorers.TheAmazonrainforesthasbeendescribedasthelungsofourplanetbecauseofitsimp

5、ortantroleinrecyclingcarbondioxideintooxygen.Butduetodeforestation(采伐森林)，rainforestsnowcoverlessthan5%oftheEarth'slandsurface，andexpertsbelievethatthisisabigcontributortoglobalclimatechange.Severedeforestationbeganinthe20thcentury，with587000squarekilometerslostu

6、ptotheyear2000.Mostdeforestedlandisusedforgrasslandtoraisefarmanimalsandagriculture.Theadditionoftransportrouteshasledtoincreasedsettlementanddeforestation，andatthepresentrate，scientistsestimatethattheAmazonrainforestwillbereducedby40%intwodecades.1．Whyarethefig

7、uresmentionedinParagraph1?A．Toprovetheforestuntouched.B．Toclassifyspeciesscientifically.C．Toshowthediversityofspecies.D．ToattractmoreattentiontoAmazon.2．WhydidmostindigenousinhabitantsintheAmazonregiondie?A．Europeanexplorersbroughtdiseasesthere.B．Portugueseexplo

8、rerstreatedthembadly.C．Alotoftreeswerecutdownandburned.D．TheygotkilledbySpanishexplorers.3．WhatcanbeinferredabouttheAmazonrainforest?A．Ithasthelargestnumberofspecies.