[单项选择]This line of inquiry did not begin until earlier this month--more than three months after the accident--because there were "too many emotions, too many egos," said retired Adm. Harold Gehman, chairman of the Columbia Accident Investigation Board.
Testifying before the Senate Commerce Committee, Gehman said this part of his inquiry Was in its earliest stages, starting just 10 days ago. But Gehman said he already has concluded it is "inconceivable" that NASA would have been unable or unwilling to attempt a rescue for astronaut, s in orbit if senior shuttle managers and administrators had known there was fatal damage to Columbia’s left wing.
Gehman told reporters after the hearing that answers to these important questions could have enormous impact, since they could place in a different context NASA’s decisions against more aggressively checking possible wing damage in the days before Columbia’s fatal return.
Investigators believe breakaway insulating foam damaged part of
A. Superheated air damaged the Columbia’s left wing shortly after liftoff.
B. NASA’s rejection of satellite images was one of the focuses of Wednesday’s hearing.
C. Gehman complained a lot about the harsh assessment of space agency’s inaction.
D. The Investigative Board is monitoring the coordination between NASA and NIM

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[单项选择]This line of inquiry did not begin until earlier this month--more than three months after the accident--because there were "too many emotions, too many egos," said retired Adm. Harold Gehman, chairman of the Columbia Accident Investigation Board.
Testifying before the Senate Commerce Committee, Gehman said this part of his inquiry Was in its earliest stages, starting just 10 days ago. But Gehman said he already has concluded it is "inconceivable" that NASA would have been unable or unwilling to attempt a rescue for astronaut, s in orbit if senior shuttle managers and administrators had known there was fatal damage to Columbia’s left wing.
Gehman told reporters after the hearing that answers to these important questions could have enormous impact, since they could place in a different context NASA’s decisions against more aggressively checking possible wing damage in the days before Columbia’s fatal return.
Investigators believe breakaway insulating foam damaged part of
A. have managed the rescue of the astronauts orbiting the earth
B. still have been unable to conceive of any way to save the astronauts
C. have attempted to help the astronauts out of danger unwillingly
D. have succeeded in repairing the damaged left wing of the shuttle

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