2018_2019学年高中英语unit22environmentalprotectionsectionⅴ学业分层测评

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1、Unit22EnvironmentalProtectionSectionⅤⅠ.单句语法填空1．Notonly________Iknowher,butIwasherbestfriend.2．HesaidthattheChristmastree________(buy)soon.3．Youcaneasilygetaccess________thehumorousoldman.4．Hefixedhisattentionon________(listen)tothemorningnews.5．Atnotime_____

2、___thecountrybeenmoreprosperousthanatpresent.【答案】　1.did　2.wouldbebought　3.to4．listening　5.hasⅡ.单句改错1．Thenaughtyboywasmadedohishomework._________________________________________________________________2．Notonlythestudentsbutalsotheteacherlikeholidays.________

3、_________________________________________________________3．Theonlyaccessofthecityisacrossthebridge._________________________________________________________________4．Mynewhouseispaintednow._________________________________________________________________5．Th

4、eseproblemsshouldhavesolvedmonthsago._________________________________________________________________【答案】　1.do前加to　2.like改为likes　3.of改为to　4.is后加being　5.have后加beenⅢ.阅读理解Alaska'sArcticlakesnowfreezelaterandmeltearlierintheyearthanin1950，leavingthemeasytosuffe

5、rwaterlossfromevaporation(蒸发)andpossiblyaddingtolocalwarming,anewstudyfinds.ThewintericeseasonnearBarrow,Alaska,isshorterthanin1950,researchersreportedJan.30inthejournalTheCryosphere.Lakeiceisalsothinnereachwinter.Thescientistssurveyed402lakesontheNorthSlope

6、，wherepermafrost(permanentlyfrozenground)andshallowlakesdominatethearea.In2011,thelakeicewas38percentthinnerthanin1950,and22percentfewerlakesfrozethroughtotheirbottoms.“Whenwesawtheactualnumberswewereshockedathowdramaticthechangehasbeen，”leadstudyauthorCrist

7、inaSurdu,oftheUniversityofWaterlooinCanada，saidinastatement.Surduandhercoauthorsanalyzedthechangesinlakeicethicknessandicecoverwithsatelliteimagesandclimatemodelsimulations(satelliteimagesareonlyavailablefrom1991)．TheclimatemodelssuggesttheArcticlakesfrozeal

8、mostsixdayslaterandbrokeupabout18daysearlierinthewinterof2011comparedwiththewinterof1950.“ThechangesiniceandtheshortenedwinteraffectNortherncommunitiesthatdependoniceroadstotransportgoods，”Surdu