Unit4--Step-by-step-3000第三册ppt课件

Unit4,WorldNews:UpinSpace,1,PartIWarmingUp,A:TrainingFocus:SelectingInformation,2,1.orbit:apathfollowedbyaplanet,star,moon,etcroundanotherbody2.lift-offn.thebeginningofarocketsflightintospace,whenitleavestheground.（火箭等）离地升空，垂直发射3.ISS:theInternationalSpaceStation:国际空间站,3,4.triumph:greatachievementorsuccess5.reconnaissance:explorationorasurveyofanarea,espformilitarypurposes（对某地区的）侦察或观测（尤指为军事目的）6.Orbiter:aspacecraftorsatellitedesignedtoorbitaplanetorotherbodywithoutlandingonit(在行星的轨道上飞行而不在其上面着陆的)航天器或卫星MarsReconnaissanceOrbiter:火星勘探轨道飞行器7.abbreviated:madeshorter8.enroute:onaroutetosomeplace9.truss:totieuporbindtightly.,4,10.revive:tocomeorbringsomethingbacktolife,health,existence,oruseMyplantsrevivedassoonasIgavethemsomewater.Ahotshowerandacupofteawillreviveyou.11.spaceprobe航空探测器;太空探测器12.CapeCanaveral:航卡纳维拉尔角（位于美国）,5,KeytoA,1.ToMars/Marchofnextyear.2.Becauseofamechanicalproblem.3.5malesand2females.4.NASA/AttheendofSeptember,83daysafterlanding.5.ToreturnhomeattheKennedySpaceCenteraftercompletingrepairsontheHubbleTelescope.,6,1.AnAmericanspacecraftistravelingtoMarstocollectinformationabouttheredplanet.TheMarsReconnaissanceOrbiterleftCapeCanaveralinFloridaonAugust12th.ThespacevehicleisexpectedtoarriveinMarchofnextyear.Itistoorbittheplanetforatleastfouryears.,7,2.TheU.S.spaceshuttleColumbiahasreturnedtoEarthafteranabbreviatedstayinspacebecauseofamechanicalproblem.TheSpaceAgencyorderedtheshuttlebacktoEarthafteroneofthethreepowergeneratorsfailedSunday.Thegeneratorscalled“fuelcells”provideallofshuttleselectricalpower,andNASAsafetyrulesrequirethespaceshiptoreturntoEarthifanyfuelcellfails.,8,3.USspaceshuttleDiscoveryhasmadeasuccessfullift-offfromKennedySpaceCenterinFlorida,enroutetotheInternationalSpaceStation.Theshuttlewith5maleand2femaleastronautsonboardwilltakeanothersectionofthehalf-builtInternationalSpaceStationalittletruss,orframeintoorbits.ItsscheduledtocomebacktoearthonDecember21.,9,4.TheUnitedStatesSpaceAgencyNASAsaysitsgivenupanyrealhopeofrevivingitsspaceprobeonMars.ThespacecraftPathfindermadeitslasttransmissionofscientificdatafromthesurfaceofMarsattheendofSeptember,83daysafterlanding.,10,5.TheU.S.spaceshuttleEndeavorispreparingtoreturnhomeintriumphaftercompletingrepairsontheHubbleTelescope.TheEndeavorsscheduledtolandMondayattheKennedySpaceCenteronFloridasAtlanticcoast,returningtothesitewherethemissionbeganelevendaysago.,11,B.Mir-Russiasspaceglory,1.collision:anaccidentresultingfromviolentimpactofamovingobject.2.microbe:averysmall,livingthing,whichyoucanonlyseeifyouuseamicroscope.微生物3.cosmonaut:apersontrainedtotravelinaspacecraft4.Gliese581c:是一颗位于天秤座星以北约2度的红矮星,是世界上发现的第一颗可能适合人类居住的类地行星。5.Neptuen:theeighthandfarthestknownplanetfromtheSunintheSolarSystem.,12,15yearstheSovietUnion,nowRussia$4.2billion(forbuildingandmaintaining)10years(19861996)135tons9,900cubicfeet63feetwideand85feetlong104cosmonauts,astronauts46438days747days,threeMar.23rd,13,PartII.NewsReports,A.1.extrasolar:anyobjectthatexistsoutsidetheSolarSystem.2.telltale:disclosingunintentionallyOnlyoccasionallydidthetelltalerednessaroundhiseyesbetraythefatiguehewassuffering.3.wobble:moveunsteadily4.tug:aquickandusuallystrongpull.猛拉;拽5.dwarf:ximal:situatednearesttopointofattachmentororigindistal,14,Summary:thesmallestandmostearth-likeextrasolarplanet.Answerstoquestions:1.Aboutadozen.2.Fivetimesthemassoftheearth.3.Areddwarf.4.Two.5.OneissimilartoNeptuneandtheotheris8timesthemassoftheearth.,15,B.NASAsprogramofMars,TrainingFocus:Summarizethenews.Vocabularyrover:awanderer漫游者RoboticroversactasrobotgeologistswhiletheyareonthesurfaceofMars.,16,Roboticarm:Muchlikeahumanarm,theroboticarmhasflexibilitythroughthreejoints:theroversshoulder,elbowandwrist.Thearmenablesatoolbeltofscientistsinstrumentstoextend,bend,andanglepreciselyagainstarocktoworkasahumangeologistwould:grindingawaylayers,takingmicroscopicimages,andanalyzingtheelementalcompositionoftherocksandsoil.,17,installment:onepartofaserialstory(分期连载的)部分;(分期出版的)分册amagazineserialinsixinstallments在杂志上分六期连载的小说Hereinthenews,itreferstothefirstpartofthemissionretrorocket:反向火箭anauxiliaryrocketengine(asonaspacecraft)usedindecelerating降低速度;减速行驶(或运转),18,descent:下降;下倾Thespectatorswatchedthedescentoftheballoon.观看的人瞧着气球降落。condensate:冷凝液；冷凝物grandfinale:aclimacticfinale(asofanopera)Inthereport,itreferstothelastdivisionofaprojecttentatively:试验性地;暂时地,19,PolarLander,20,21,TheMarsClimateOrbiter(formerlytheMarsSurveyor98Orbiter)wasoneoftwospacecraftintheMarsSurveyor98program,theotherbeingtheMarsPolarLander(formerlytheMarsSurveyor98Lander).ThetwomissionsweretostudytheMartianweather,climate,andwaterandcarbondioxidebudget,inordertounderstandthereservoirs,behavior,andatmosphericroleofvolatilesandtosearchforevidenceoflong-termandepisodicclimatechanges.,22,Nowlistentothenewsreportandsummarizethenewsaccordingtothecuesgiven.Event:NASAs12-yearprogramofMarsStartingtime:1996Finishingtime:2008FirstInstallment:Namesofspacecraft:TheMarsGlobalSurveyorOrbiterThePathfinderLanderArrivaltime:1997Mission:Tocollectandanalyzerocks,23,Secondinstallment:Namesofspacec