单项选择题

Who is going to be the chairman of the Accident Investigation Board

A．Sherwood Boehlert.
B．Harold Gordon.
C．NASA Administrator.
D．House Science Committee Chairman.
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A．will beB．isC．areD．must be
A．will be
B．is
C．are
D．must be
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A．reasonB．doubtC．wayD．problem
A．reason
B．doubt
C．way
D．problem
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