it CAn BE inFErrED From thE tExt thAt_____.
A．thE mAin Aim oF thE spACEwAlk wAs not ACComplishED
B．thE FinAl rEpAiring work DEpEnDs on FuturE
C．thE spACEwAlk Cost muCh
D．rEpAiring work hAs FinishED