2019版高考英语一轮基础达标选题 Unit 2 Poems（含解析）新人教版选修6

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1、Unit2Poems一、阅读理解。TheAmazonbasinregionishometoabout2.5millioninsectspecies，tensofthousandsofplants，andsome2，000birdsandmammals.Todate，atleast40，000plantspecies，3，000fish，1，294birds，427mammals，428amphibians，and378reptileshavebeenscientificallyclassifiedintheregion.Oneinfiveof

2、allthebirdsintheworldliveintheAmazonrainforest.Thewarmandwetforesthasbeeninexistenceforatleast55millionyears，andthrivedevenduringglacialperiods，allowingfortheevolutionofanunbelievablediversityofspecies.Radiocarbondating(放射性碳定年法)hasrevealedtreesof10centimeterindiametertobemo

3、rethan300yearsold，andsometreesover1，000yearsold，indicatingthatuntouchedforestscanexperienceunbelievablelongevity.ThefirsthumaninhabitantsarethoughttohavesettledintheAmazonregionabout11，200yearsago.Europeanexplorersarrivedinthe16thcentury，bringingdiseaseswhichtraveledfastert

4、hantheexplorersthemselves，killingperhapsasmanyas90%oftheindigenousinhabitants(土著居民)．Bythelate17thcenturytheAmazonbasinwascontrolledbyPortugueseandSpanishexplorers.TheAmazonrainforestshasbeendescribedasthelungsofourplanetbecauseofitsimportantroleinrecyclingcarbondioxideintoo

5、xygen.Butduetodeforestation(滥伐森林)，rainforestsnowcoverlessthan5%oftheEarth’slandsurface，andexpertsbelievethatthisisabigcontributortoglobalclimatechange.Severedeforestationbeganinthe20thcentury，with587，000squarekilometerslostuptotheyear2000.Mostdeforestedlandisusedforgrasslan

6、dtoraisefarmanimalsandagriculture.Theadditionoftransportrouteshasledtoincreasedsettlementanddeforestation，andatthepresentrate，scientistsestimatethattheAmazonrainforestwillbereducedby40%intwodecades.【解题导语】　本文主要讲述了亚马逊热带雨林的历史、丰富的物种以及现在所面临的危险。1．WhyarethefiguresmentionedinParagr

7、aph1?A．Toprovetheforestuntouched.B．Toclassifyspeciesscientifically.C．Toshowthediversityofspecies.D．ToattractmoreattentiontotheAmazonregion.C　解析：推理判断题。根据第一段的内容并结合第二段第一句中的“allowingfortheevolutionofanunbelievablediversityofspecies”可推知，那些关于动植物种类的数字说明了亚马逊热带雨林的物种多样性，故选C。2．Whydidm

8、ostindigenousinhabitantsintheAmazonregiondie?A．Europeanexplorersbroughtdiseasesthe