题目内容：
根据以下材料，回答题NeithertheAmericansnortheRussianshavetheresourcestocontinuehumanspaceflightontheirown;bothsidesknowtheyneedeachother.61)It'smucheasierandcheapertogetusedtoeach
otherandtoblenddifferingoperatingstyles,languages,andsystemsontheagedMir(aRussianwordfor"peace")thantryingtodothatwhilejointlybuildinganewspacestation.NASA,
infact,callsitsprogramofshuttleflightstoMirPhase1oftheInternationalSpaceStation(ISS).Phase2marksthebeginningofactualconstruction.TheproceduresusedtodocktheshuttletoMir,
forexample,alsowillbeusedasalifeboatfortheISS.AndProgressfreighters,like"theonethatcrashedintoMirinJune,willhaulcargototheISS.62)OneunintendedbenefitofMir's
technicaltroublesisthattheyhaveactuallyforcedthetwonationstoworkmuchmorecloselytogetherthantheyhadplanned.
Exceptforabriefperiodinthe1970swithSkylab,NASAhasneveroperatedaspacestation:theRussianshavebeenrunningthemforyears.Astronautshavelongbeentrainedintensivelytoper-formspecifictasksonshuttleflightslasting18daysorless.63)Russianastronauts,however,learnmoregeneralskills,sincetheyspendmanymonthsinorbitandnoonecanforecastallthe
problemstheymightencounter.Asaresultofshutfle-Mirexperience,NASAisrevisingastronauttrainingtoincludemoreofthegeneralskillstheywillneedontheISS.
NASAdecidedtosendastronautstoMirbasedonitslongrecordofsafeoperation.Butthisyear,crewsaboardMirhavefacedtwoofthemostseriousemergenciesinthehistoryofhumanspaceflight.
64)InFebruary,anoxygengeneratorcaughtfire,shootingout4-foot-longjetsofflamelike;fireextinguisherswereboltedinplace,delayingreactiontothefire.InJune,aProgressFreightercollidedwiththeSpektrmodule,puncturingit.Spektrhadtobesealedoffto
preventalltheairfromleakingfromthespacecraft.65)TheancientcomputerthatcontrolsMirhasfailedmanytimes,causingmostothersystems,includingtheonethatkeepsthe
station'ssolarpanelspointedatthesun,toshutdown.OnefailureinAugustoccurredwhileaProgresswasdocking.Lastweek,thecomputercrashedagain,thecarbondioxideremovalsystemshut
down,andamysteriousbrownflu-id-probablyrocketfuel--appearedtoleakfromthestation.
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