单项选择题

The instruction for the imported machines is so______ that it is impossible for us to operate it.

A．intricate
B．ambiguous
C．duplicated
D．confused
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The______ for career development becomes wider and wider with our country's economy improved.
A．insight
B．scope
C．momentum
D．phase
单项选择题
The fact that she was a few minutes late is no reason for______ her.
A．extracting
B．ejecting
C．draining
D．discharging
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