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2020-2021学年洛阳市第八中学高三英语期中试卷及答案解析第一部分阅读（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A、B、C、D四个选项中选出最佳选项APlanYourVisittotheBritishMuseumWe'vemadeafewchangestoensureyoucansafelyenjoyyourvisit:Howtobooktickets·Ticketsforthepermanentcollectioncanonlybehookedonlineinadvance.·Tobookticketsforexhibitions,visitourexhibitionpages.Ifyouwanttoguaranteeyourvisittothepermanentcollectionaswellastheexhibitiononyourvisit,youwillneedtobookaseparateticket.·Wearelimitingnumbersofpeopleinthemuseumtoensurethereisroomforyoutosafelyenjoyyourvisit.Everyone,includingmembersandvolunteers,willthereforeneedtobookafree,timedticketinadvance.Importantinformationaboutyourticketbooking·Youcanbookuptosixticketsforpeoplewholiveinthesamefamily.·Wewillemailyourtickettoyou,andyouwillneedtoshowiteitherprintedoutoronyourdevice(设备whenyouarrive.·Pleasearriveatthetimestatedonyourticket-wecannotguaranteeadmissionbeforeorafterit.FollowingtherouteWehavecreatedanewone-wayroutethroughthemuseumwhichwillallowyoutosafelyexploreworldculturesfromtheMediterraneantotheMiddleEastandfromtheAmericastoAfrica.·Viewamapoftheroute(Openinanewwindow.·Ouraudioguides(音频指南arenotavailable.However,youcanpaytodownloadtheaudiointroductionsfromiTunes(OpeninanewwindoworGooglePlay(Openinanewwindowtoeachofthegalleriesandlistenonyourowndevice.Pleaseremembertobringalongyourownheadphones.1.Whydoesthemuseumoffertimedtickets?A.Toearnmoremoney.B.Tohiremorevolunteers.C.Tosaveroomforcollections.D.Tocontrolthenumberofvisitors.2.Howcanavisitorlearnaboutthenewrouteinadvance?A.Viewanonlinemap.B.Buyanewheadphone.
C.Buyaudioguidesfromthemuseum.D.DownloadvideointroductionsfromiTunes.3.Wherecanyouprobablyfindthetext?A.Inanewspaper.B.Inamagazine.C.Onawebsite.D.Inareport.BIfyouhaveevertriedtocatcharestingbutterfly,youknowitissurprisinglydifficult.Anewstudyhelpsexplainwhy.Previousresearchhadsuggestedthatabutterfly'soverheadwingclapforcestheinsectforward.Researchersthoughtthewingclaplikelyformedapocketofairthatshootsoutlikeajet,butnoonehadtestedthatuntilnow.Tounderstandtheirflight,theyplacedsixbutterfliesoneatatimeinsideawindtunnelwhichwasfilledwithsmokeandthenusedalasertolightupthesmokejustbehindthebutterfly.Fourhigh-speedcameraswereplacedinthetunneltotakephotosofthemovementofthebutterflyandthe-smokeasthebutterflywastakingoff.Thislettheresearcherscreatea3Dpictureofthatairmovementastheinsectflappeditswings.Theyobservedatotalof25takeoffsbysixbutterflies.Eachincludeduptothreewingbeatsaftertakeoff.Thebutterfliesprovedmorelikelytoclaptheirwingstogetherduringthefirstfewwingbeatsthanlaterinflight.Thephotosshowthatforcescreatedbythewingsgiverisetoaflightpath.Thebutterfliesriseastheirwingsmovedownandshootforwardastheirwingsmoveup.Awingclapontakeoff,pairedwithaquicktum,allowedthebutterfliestoflyawayquickly.Theyalsonoticedthewingsformedanairpocketjustbeforeclappingandthatthewings'flexibilityandthispocketimprovedthejetforcecreatedbytheclap.“Thestudyisexciting,”saysAyodejiBode-Oke,amechanicalengineerinCharlottesville.Thatmeans“wehavesolvedthelongtimepuzzleabouthowbutterfliesfly,anditprovesnothingisimpossibleontheroadofscientificresearch.Ican'twaittolearnabouthowthestudymightinformdesignsforsmallaerialvehicles.”4.Whywaslaserusedintheexperiment?A.Tofrightenthebutterfliesintolying.B.Tohelpresearchersobservethebutterflies.C.Tohelptakeclearphotosofairmovement.D.Toguidethebutterfliesthroughthesmoke.5.Whatisthefindingoftheresearch-accordingtoparagraph5?A.Butterfliesflyforwardaswingsmovedown.B.Anairpocketformsafterbutterfliesclapwings.

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