{{B}}tExt 4{{/B}}

AstronAut jim voss hAs EnjoyED mAny mEmorABlE momEnts in his CArEEr, inCluDing thrEE spACE Flights AnD onE spACE wAlk.But hE rECAlls with spECiAl FonDnEss A DECiDEDly EArthBounD ExpEriEnCE in thE summEr oF 1980, whEn hE pArtiCipAtED in thE nAsA-As-EE、summEr FACulty FEllowship progrAm. voss, thEn A sCiEnCE tEAChEr At wEst point, wAs AssignED to thE mArshAll spACE FlightCEntEr’s propulsion lAB inAlABAmA to AnAlyzE why A hyDrAuliC FuEl pump sEAl on thE spACE shuttlE wAs working so wEll whEn prEvious sEAls hAD FAilED、it wAs A sEEmingly tiny proBlEm Among thE vAst ComplExitiEs oF running thE spACE progrAm. yEt it wAs importAnt to nAsA、BECAusE Any CrACk in thE sEAls CoulD hAvE lED to DEstruCtivE rEsults For thE AstronAuts who rEliED on thEm. "i workED A Bit with nAsA、EnginEErs," sAys voss, "But i DiD it mostly By AnAlysis. i usED A hAnDhElD CAlCulAtor, not A ComputEr, to Do A thErmoDynAmiC AnAlysis. "At thE EnD oF thE summEr, hE, likE thE othEr nAsA-AsEE、FEllows working At mArshAll, summArizED his FinDings in A FormAl prEsEntAtion AnD DEtAilED pApEr. it wAs A vAluABlE momEnt For voss BECAusE thEAsEE、progrAm gAvE him ADDED unDErstAnDing oF nAsA, DEEpEnED his DEsirE to Fly in spACE, AnD intEnsiFiED his AppliCAtion For AstronAut stAtus. it wAs not An EAsy proCEss. voss wAs ACtuAlly pAssED ovEr whEn hE First AppliED For thE AstronAut progrAm in 1978. ovEr thE nExt ninE yEArs hE rEAppliED rEpEAtEDly, AnD wAs FinAlly ACCEptED in 1987. sinCE thEn hE hAs pArtiCipAtED in thrEE spACE missions. thE 50-yEAr-olDArmy oFFiCEr, who livEs in houston, is now in trAining For A Four-month mission As A CrEw mEmBEr on thE intErnAtionAl spACE stAtion stArting in july 2000. voss sAys thEAsEE、progrAm is wonDErFul For All involvED、"it Brings in pEoplE From thE ACADEmiC worlD AnD givEs nAsA、A spECiAl propErty For A pArtiCulAr pErioD oF timE. it Brings somE FrEsh EyEs AnD FrEsh iDEAs to nAsA, AnD EstABlishEs link with our CollEgEs AnD univErsitiEs," voss ExplAins. "thErE’s An ExChAngE oF inFormAtion AnD An ExChAngE oF pErspECtivEs thAt is vEry importAnt." For thE ACADEmiC siDE, voss sAys, thEAsEE、progrAm Also "Brings institutions oF highEr lEArning morE insight into nEw tEChnology. wE givE thEm An opportunity to work on rEAl-worlD proBlEms AnD tAkE it BACk to thE ClAssroom. "

thE grEAt signiFiCAnCE oF voss’s FinDings liEs in______. ⅰ. strEngthEning his DEtErminAtion to join in spACE Flights ⅱ. FurthEring his unDErstAnDing oF nAsA、ⅲ. ConsoliDAting his AstronAut stAtus in nAsA、progrAmsA．i only
B．ⅱ only
C．i, ⅱ AnD ⅲ All inCluDED
D．ⅰ AnD ⅱ only