单项选择题
It is obvious from Paragraph 4 that the chief cause leading to the disaster is ______.
A．the leakage of the O rings
B．cold weather
C．structure failures
D．the faulty fuel tank
点击查看答案&解析
<上一题
目录
下一题>
热门
试题
单项选择题
Investigation by the special commission revealed that ______.
A．top-level NASA officials made an arbitrary decision for takeoff
B．designers of the spacecraft failed to assess the problem with the booster
C．cold weather caused the O ring to come off the rocket booster
D．the tragedy was caused by at least three factors working together
点击查看答案&解析
单项选择题
The word overrule in the first sentence of paragraph 2 means ______.
A．share
B．ignore
C．consider
D．know
点击查看答案&解析
相关试题
related (relevant)
address
rational
include
Groups or organizations are an impo...