2019-2020年高中英语Unit5Thepowerofnature单元质量评估新人教版选修

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1、2019-2020年高中英语Unit5Thepowerofnature单元质量评估新人教版选修第一部分　阅读理解(共两节，满分40分)第一节(共15小题；每小题2分，满分30分)阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。Theseaishometobillionsofplantsandanimals.Manyliveonlynearthesunlitsurface.Oceanographersclassifymarinelivingbeingsbyseparatingthemintotwomaingroups:plantsandanimals.Therearetw

2、ogeneraltypesofplantsfoundintheocean,thosehavingrootsthatareattachedtotheoceanbottomandthosenothavingrootswhichsimplydriftaboutwiththewater.Therootedplantsintheoceanareonlyfoundinshallowwaterbecausethereisnotenoughsunlighttosustainphotosynthesis(光合作用)indeeperwaters.Sincesunlightdoesnotpassmorethana

3、fewhundredfeetintotheocean,mostoftheoceanisnotcapableofsupportingrootedplants.Themostplentyplantsintheoceanareknownasphytoplankton(浮游生物)．Theseareusuallysingle－celled,minutefloatingplantsthatdriftthroughoutthesurfacewatersoftheocean.Togrow,phytoplanktonneednutrientsfromtheseawaterandlotsofsunlight.M

4、arineanimalsaredividedintothreegroups:zooplankton,nekton,andbenthos.Zooplanktonaredriftinganimalsandareusuallysmall,however,theycangrowtofairlylargesize.Forexample,thejellyfishandthePortugueseman－of－warareexamplesoflargertypesofzooplanktonwhichareunabletopropel(推进)themselveseffectively.Nektonarethe

5、freeswimmersandprobablythelargestportionoffamiliaranimalsfoundintheoceanbelongtothisclassmonfishes,theoctopus,whales,eelsandsquidareallexamplesofnekton.Thethirdtypeofseaanimalspendsitsentirelifeonorintheoceanbottom.Thisgroupofmarineanimalsiscalledthebenthos.Someofthesecreatures,suchaslobstersandsna

6、ils,maybeabletomoveaboutonthebottombuttheirlifestyleissoboundupwiththeoceanfloorthattheyareunabletosurviveawayfromthisenvironment.【语篇解读】　海洋是成千上万种动物和植物的家乡。海洋植物主要有两种：有根植物和浮游植物；海洋动物大体可分为三类：浮游动物、游泳动物和海底动物。1．Thetextmainlytellsussomethingabout________．A．marineplantsandmarineanimalsB．twotypesofseaplantsC．

7、threekindsofseaanimalsD．smallandbiganimalsintheocean解析：主旨大意题。本文主要讲述了海洋生物的分类(海洋植物和海洋动物)以及它们的特点。答案：A2．Whycan'twefindtherootedplantsindeepwateroftheocean?A．Becausetherearetoomanyrocksatthebottomoftheocean.B．Be