全新版大学进阶英语第二册第五单元答案

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1、Unit5PioneersofFlightKeytoExercisesOpenerAMightyAirplaneBuiltbyHowardHughesin1947LengthItwas220feetlong.HeightItwashigherthanafive-storybuilding.WeightItweighedabout60tons.TripIthadtomakethetripfromCulvercityinCaliforniatothePacific,whichis30milesaway.Reading&I

2、nteractingI.UnderstandingtheText1.TextOrganizationStoryTheheroWhenithappenedHowitrelatestomodernaviation1WanHuA.D.1500WanHu’scrazydreamcontainstheprinciplesofrocket-poweredspaceflight.2HowardHughesOnNovember2,1947ManyofthedesignfeaturesoftheSpruceGoosehavebeeni

3、ncorporatedintomoderncargoplanes.3LeonardodaVinciAbout500yearsagoTheflyingdeviceswithflappingwingscontrolledandsteeredbyhumanpilotshedesignedstillinspirepeopletopursuetheirdreamsofflyingfreelyinthesky.2.ComprehensionCheck2.1FocusingonthemainideasThearticleconsi

4、stsofthreestoriesaboutpioneersofflight.ThefirststoryisaboutaChinesenamedWanHu,whomadeanunsuccessfulattemptatspaceflightinA.D.1500.Hebuiltaspaceshippoweredby47rocketsusinggunpowder.Hisideawascrazy,buthisdreamofflightcametrue500yearslaterwhenChinasuccessfullylaun

5、cheditsfirstmannedShenzhouVspaceship.ThesecondoneisabouttheSpruceGoose,aflyingboatdesignedtomeettheneedoftransportingtroopsandmaterialsduringWorldWarII.Itwasmadeentirelyofwoodandstillholdstherecordforthegreatestwingspan.Althoughitwasneverputtouse,manyofitsdesig

6、nfeatureshavebeenincorporatedintotoday’scargoplanes.ThelastisaboutLeonardodaVinci,themostfamousartistoftheRenaissance.Apartfromhisgreatartisticwork,healsodrewsketchesofflyingdeviceswithflappingwingscontrolledandsteeredbyhumanpilots.Fivehundredyearslater,aprofes

7、sionalparachutistmadeasuccessfuljumpusingawoodandcanvasparachutebasedononeofdaVinci’sdesigns/sketches.2.2Diggingintodetail1.Becauseitwaspoweredbyrockets.2.Itwasthebiggestairplaneeverbuiltuptothattime,andstillholdstherecordforthegreatestwingspan.Besides,itwasmad

8、eentirelyofwood.3.No,becauseitwasbehindscheduleandwasnotcompleteduntilwellafterthewar.4.DaVinci’sflyingmachineshavewingsthatflaplikebirdsinflight.5.Becauseitisdifficultforor