单项选择题


A．consequence
B．seriousness
C．sequence
D．result
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单项选择题
A．visibleB．visualC．invisibleD．vision
A．visible
B．visual
C．invisible
D．vision
单项选择题
By Dr. Clark lived for 112 days ,the author most probably means that _____________.
A．the replacement of Dr. Clark' s heart was a failure
B．there was still a long way to go in applied bionics
C．applied bionics was promising
D．the first artificial heart was most effective
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