单项选择题

The author of the report is well ______ with the problems in the hospital because he has been working there for many years.

A．informed
B．acquainted
C．enlightened
D．advertised
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单项选择题
In this workshop they ______ a vehicle in less than half an hour.
A．eject
B．fabricate
C．assemble
D．resemble
单项选择题
Mary usually does things with little care, she is ______.
A．rare
B．cautious
C．reckless
D．rapt
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