2021版高考英语一轮复习Unit3Scienceandnature课后达标检测牛津译林版必修5.doc

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1、Unit3Scienceandnature课时练1　2篇阅读＋1篇完形阅读理解A(2020·宣城诊断)InthestoryofTheCrowandthePitcherfromAesop’sFables,athirstycrow(乌鸦)dropsstonesintoanarrowjartoraisethelowlevelofwaterinsidesohecantakeadrink.Nowscientistshaveevidencetobackupthatstory.Crowsactuallydounderstandhowtomakewaterdisplacement(排水

2、量)worktotheiradvantage,experimentsshow.Theresultssuggestthatthebirdsare,atleastinsomeaspects,assmartasfirstgraders.Researchers,ledbySarahJelbertattheUniversityofCambridge,presentedsixcrowswithtubescontainingwater.Insidethetubes,awormorapieceofmeatonapieceofwoodwasfloating,justoutofreacho

3、fthecrows.Infrontofthetubes,theresearchersarrangedseveralrubbererasersthatwouldsink,andsomeplasticobjectsthatwouldfloat.Thecrowsfoundoutthattheycoulddroptheerasersintothetubesinordertoraisethewaterlevelandgettheirsnack.However,the_birds_handled_awkwardlyinexperimentsinwhichtheycouldchoos

4、etodropobjectsineitherawidetubeoranarrowonetogetasnack,theresearcherssaid.Droppingobjectsintoanarrowtubewouldliftthewaterlevelbyagreateramountandputthetreatwithinreachafterjusttwodrops;whileittookaroundsevendropstoraisethesnacktothesamelevelinthewidetube.Thecrowsobviouslydidn’trealizethi

5、s,andmostofthemwentforthe14widetubefirst.Previousstudiesshowedthatchimpsandhumanchildrencansolvesimilartasks.Ina2011study,chimpsandkidsfoundoutthattheycouldputwaterintoatubetoreachapeanutthatwasfloatinginasmallamountofwateratthebottom.【解题导语】　本文主要介绍了科学家通过实验对乌鸦智商进行的研究。1．Howdidthecrowsgetth

6、esnackinSarah’sexperiment?A．Bybreakingthetube.B．Bydroppinginerasers.C．Bystandingonthewood.D．Byremovingthewood.B　解析：细节理解题。根据第三段最后一句“Thecrowsfoundoutthattheycoulddroptheerasersintothetubesinordertoraisethewaterlevelandgettheirsnack.”可知，乌鸦能够把橡皮擦扔到管里，使水位升高，然后吃到零食。所以选B项。2．Whatdoestheauthormea

7、nby“thebirdshandledawkwardly”inParagraph4?A．Theywereunabletotelldifferentshapes.B．Theydroppedobjectsonlyintonarrowtubes.C．Theywerenotawareofthesnackatfirstsight.D．Theymostlyavoidedtheeasierwaytogetthesnack.D　解析：推理判断题。从第四段可知，实验中的乌鸦在面对粗细不同的管子时，虽然只需往细管里投两次物体就可以够到零食，而需往粗管里投大约