最新StepByStep英语听力入门3册答案Word文档下载推荐.docx
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s30-daymissiononMarsisa100percentsuccess.
4.WhohasgivenupitshopeofrevivingPathfinder?
NASA
WhendidPathfindermakeitslasttransmissionofscientificdatafromMars?
AttheendofSeptember,83daysafteritslanding
5.WhyisGalileoheadingforanotherpassbyJupiter'
smoonIOonThursday?
Togetacloserlookatthemostvolcanicbodyinsolarsystem
6.WhatisthedauntingtaskforthecrewofAtlantis?
TodeliverNASA'
s$1.4billionspacelabDestinytotheInternationalSpaceStation
7.WhatisthepurposeoftheexperimentsconductedbyastronautsonColumbia?
Toconfirmatheorythatparticlesinspacetendtoattracteachotherandformdustclouds
8.WhatisEndeavorpreparingtodoonMonday?
ToreturnhomeattheKennedySpaceCenteraftercompletingrepairsontheHubbleTelescope
9.WhyhasColumbiareturnedtoEarthafteranabbreviatedstayinspace?
Becauseofamechanicalproblem
10.WhatisDiscoverydoingnow?
Anditscrew?
DiscoveryisplayingchasewiththeHubbleTelescopenow.
Itscrewissettinguphousekeepingandrecoveringfromtheeffectsofweightlessness.
Tapescript:
1.U.S.spaceshuttleEndeavorhasdockedwiththeInternationalSpaceStation,bearingagiftofenergy.Thefive-manshuttleteamarrivedtoaddasetofgiantsolarpowerpanelstoUnitytoprovideelectricityforscienceexperimentsthatwillbeginsoonaftertheU.S.laboratoryarrivesnextmonth.
2.TheInternationalSpaceStationfinallyhasalivingroomandacommandcenter.TheRussianZvezdamoduledockedearliertodaywiththefledglingoutpost,whichisbeingassembledinspace.Afteracheckoutperiod,itwillbereadyforthefirstcrewtoliveinlaterthisyear.
3.TheU.S.SpaceAgencyNASAhasdeclareditsPathfinderspacecraftmissiontoMarsa100percentsuccess.ThisweekthePathfindercompletedits30-dayplannedmissiononMars.AU.S.spaceofficialsaysthisspacecrafthasfulfilledallitsobjectives.
4.TheUnitedStatesSpaceAgencyNASAsaysit'
sgivenupanyrealhopeofrevivingitsspaceprobeonMars.ThespacecraftPathfindermadeitslasttransmissionofscientificdatafromthesurfaceofMarsattheendofSeptember,83daysafterlanding.
5.TheU.S.GalileospacecraftisheadingforanotherpassbyJupiter'
sfierymoonIOThursdaytogetacloserlookatthemostvolcanicbodyinoursolarsystem.Apassjust600kilometersawaylastmonthhasprovidedabetterunderstandingofjusthowactiveitis.
6.Itcouldbeamission-impossible-typeassignmentforthecrewofthespaceshuttleAtlantis.They'
vegotthedauntingtaskofdeliveringNASA'
s$1.4billionspacelabDestinytotheInternationalSpaceStation.Iftheypullitoff,the15-tonlabwillputNASA'
sflightcontrollersincharge.UntilnowRussiancontrollershavedirectedoperationsatthestation.
7.AstronautsontheU.S.spaceshuttleColumbiahaveconductedexperimentstoconfirmatheorythatparticlesinspacetendtoattracteachotherandformdustclouds.
8.TheU.S.spaceshuttleEndeavorispreparingtoreturnhomeintriumphaftercompletingrepairsontheHubbleTelescope.TheEndeavor'
sscheduledtolandMondayattheKennedySpaceCenteronFlorida'
sAtlanticcoast,returningtothesitewherethemissionbeganelevendaysago.
9.TheU.S.spaceshuttleColumbiahasreturnedtoEarthafteranabbreviatedstayinspacebecauseofamechanicalproblem.TheSpaceAgencyorderedtheshuttlebacktoEarthafteroneofthethreepowergeneratorsfailedSunday.Thegeneratorscalled"
fuelcells"
provideallofshuttle'
selectricalpower,andNASAsafetyrulesrequirethespaceshiptoreturntoEarthifanyfuelcellfails.
10.DiscoveryisplayingchasewiththeHubbleSpaceTelescoperightnow.Theshuttlelaunchwasnearlyperfectaccordingtomissionmanagers,andthecrewofsevenastronautsissettinguphousekeepingandrecoveringfromtheeffectsofweightlessness.
PartIINewsreports
Event:
NASA'
s12-yearprogramofMars
--Startingtime:
1996
--Finishingtime:
2008
Firstinstallment:
nNamesofspacecraft:
theMarsGlobalSurveyorOrbiter/thePathfinderLander
Arrivaltime:
1997
Mission:
Tocollectandanalyzerocks
Secondinstallment:
--Namesofspacecraft:
thePolarLander/theMarsClimateOrbiter
Launchtime:
December
NextDecember
a.Toinspectforsubsurfacewater
b.Tomeasurethedistributionofwatervapor,dustandcondensates
Grandfinale:
--Launchtime:
2005
--Returntime:
--Mission:
ToreturnsoilandrocksamplestoEarth
OfalltheU.S.andRussianspacecraftthathavetraveledtoMarssincethe1960s,thePolarLanderistobethefirsttotouchdownneartheplanet'
ssouthpole.TheLanderandacompanionorbitingcraftcalledtheMarsClimateOrbiter,launchedinDecember,arethesecondinstallmentofa12-yearNASAprogram(beganin1996)tounlockthesecretsofEarth'
sredneighbor.
ThefirstinstallmenttheMarsGlobalSurveyorOrbiterandthePathfinderLander--arrivedin1997,withPathfinder'
sroboticrovercollectingandanalyzingrocksonadesertabouthalfaworldawayfromthepolarlandingsite.
TheLanderistotouchdownjustabovethenorthern-mostedgeofthesouthpolaricecap,believedtobeamixtureofwaterandcarbondioxide.
Itwilluseretrorocketstoslowitsdescent.Onceonthegrounditwillemployaroboticarmresemblingachild'
stoyconstructionshoveltodiginsearchofsubsurfacewater.TogetherwiththenewestorbiternowonitswaytoMars,theLanderwillalsomeasurethedistributionofwatervapor,dustandcondensatesintheMartianatmosphere.
WhilethePolarLanderdescendsnextDecember,itistoreleasetwospeedingprobes,eachsmallerthanabasketball.Theseruggedinstrumentsaretocrashatabout640kilometersperhourandburythemselvesintotheMartiansurfaceabout100kilometersawayfromtheLander'
stouch-downpoint.They,too,willbeinspectingforsubsurfacewater.
ThegrandfinaleofthisseriesofMarsprobesistentativelysetforlaunchin2005.ItwouldreturnsoilandrocksamplestoEarththreeyearslater.
Summary:
Thisnewsreporttellsusthatanailingobservatory,theComptonGammaRayObservatory,hasbeenforcedtofallfromitsorbitandcrashintoaremoteareainthePacificOceantoavoiddeathsandinjuriesfromthefallingdebris.
Answerstothequestions:
1.9years
2.16metrictons
3.6tons
4.About4,000kilometerssoutheastofHawaii
5.4,100kilometerslongand26kilometerswide
6.BecauseoneofitsthreestabilizinggyroscopeshadfailedinDecember
7.Itchangedastronomers'
viewoftheheavensaftershowingthattheentireuniverseisbathedintheinvisiblegammarays.
Tapescript.
SpaceAgencyNASAforcedanailingobservatorytofallfromorbitandcrashintothePacificOceanonSunday.NASAengineerspickedaremotespottoavoiddeathsandinjuriesfromthefallingdebris.
NASAsaystheComptonGammaRayObservatoryhasmadeafieryplungethroughtheatmosphereintoanisolatedareaofthePacific.
Mostofthenine-year-oldsatellitewastohaveburnedupinthedive,butaboutsixtonsofhotmetalwereexpectedtohaveshoweredontoanisolatedareaaboutfourthousandkilometerssoutheastofHawaii.NASAhadestimatedthatthedebriswouldscatteroveralong,narrowpath41hundredkilometerslongand26kilometerswide.
ThedeliberatecrashcameafterGoddardSpaceFlightCentertechniciansdirectedtheobservatoryearlySundaytofireitsthrusterstwicetodiveintotheatmosphere.
NASAfeltthiswasnecessarybecauseoneoftheCompton'
sthreestabilizinggyroscopeshadfailedinDecember.TheSpaceAgencydecidedtobringthe16-metric-tonsatellitebacknowinacontrolledmannertopreventpossiblefurthersystemfailuresfromcausingittodroponapopulatedarea.TheCompton'
spathtookitovermanypopulatedareas,includingMexicoCity,Bangkok,andMiami.
Comptonexceededitsoriginalfive-yearmissionbyfouryears,resultinginabouttwothousandscientificpapers.
Theobservatorychangedastronomers'
viewoftheheavensaftershowingthattheentireuniverseisbathedintheinvisiblegammarays,thehighestenergyformoflight.Itdiscoveredhundredsofpreviouslyunknownsourcesofgammarays,somestreamingfromblackholes,explodingstars,andthesun.
Questions:
1.HowoldistheCompton?
2.HowheavyistheCompton?
3.HowmanytonsofhotmetalwereexpectedtoplungeintothePacific?
4.WhatistheplacethathasbeenchosenforthecrashoftheCompton?
5.HowbigisthepaththatthedebrisoftheComptonwouldscatterover?
6.WhyisitnecessarytoforcetheComptontofallfromitsorbit?
7.What'
sthesignificanceoftheCompton?
C.
ThisnewsreporttellsusthatorganicmoleculeshavebeendetectedonthemoonsoftheplanetJupiterandsomeformoflifemighthaveevolvedthere.
MoonsofJupiterFindings
Ganymede
Wrinkledsurfacepockmarkedwithimpactsfromasteroidsandcomets
Ganymede&
Callisto
--Chemicalsignalsshowingthereareorganicmoleculescontainingcarbonandnitrogen
--Evidenceofwaterice
EuropaDeepoceans
AstronomersintheUnitedStatessaytheyhavedetectedorganicmoleculesonthemoonsoftheplanetJupiterwhichcouldindicatetheconditionsarerightthereforsomeformoflifetohaveevolved.AfterstudyingthelatestfindingssentbackbythespaceprobeGalileo,
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