高二unit13课时检测基础练习.doc

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1、高二UNIT13Thewaterplanet检测练习I.Passageone:Trueorfalse1.Waterisaliquidatroomtemperature,andithasarelativelyhighfreezingpoint.2.Thereasonwhywatercandissolvemostsubstancesonearthisthatwaterhashighheatcapacity.3.Likealltheothersubstances,watergetssmaller（contract

2、缩小）whenitfreezes.4.Purewaterhasahigherfreezingpointandlighterthansaltwater.5.Thesalinityoftheearth'soceansisabout3.5%.6.Whenwaterfreezes,itsdensityincreases.7.Otherrecoursessuchasoil,gas,goldetcisaspreciousasadropofrain・II.Readingcomprehension:1.Whatmakesw

3、ateranexcellentmediumforlife?A.Itsweightandfreezingpoint・B.ItsdensityC.Itscapacity・D.Itschemicalstructure.2.WhichofthefollowingisNOTtrueaccordingtothetext?A.ThewaterintheoceancankeepthetemperatureoftheearthsteadyB.Purewaterhasalighterfreezingpointthansaltw

4、ater.C.Thereisnolifeonthebottomofthedeepestoceansbecausethesundoesn'treachsodeep.D.Ifheated,thedensityofwaterwillincrease.3.Whyiswaterintheoceanalwaysmoving?A.Becausetherearevariouslivingthingsinit.B.Becausewaterisalwaysflowingdown.C・Becausechangesinsalini

5、tyandtemperatureaffectwater'sdensity.D.Becausewaterispolar.4.Thepassagemainlytalksabout.A.theuniquepropertiesoftheoceanB.thechemicalstructureofthewaterC.theuniquepropertiesofwaterD.themarineecosystemsoftheocean5.whatdoestakeadvantageof刀meaninPara.4ofthefir

6、stpassage?A.有利于B.利用C.优越于D.取代III.Passagetwo:Trueorfalse.1•estuaryisthelandplacewherearivermeetstheocean.2.stuariesarethehomestothousandsofanimalsandplants3.trientsarriveinestuariesonlyfromtheland.4.stuariesarealsoimportantbecausetheyabsorbnutrientsandpollut

7、antsfromwatercomingfrominlandsources,thuscleaningourwater.5.tuariesalsocontributetotheeconomythroughtourismandtransportation.I.Readingcomprehension:1.Bymentioning^nutrientsarriveinestuariesfromboththelandandtheocean55A.estuariesarethebestplaceforallthelivi

8、ngthingsB.manycitiesandtownswillbebuilthereC.thedensityoflivingcreaturesishigherthananyotherhabitatonearthD.scientistsandstudentswhocometostudyavarietyoflifeinthehabitatcanhavedeliciousfoot1.Whichofthefollowi