单项选择题

The old farmer was run down by a car. He was taken to the hospital and ______ on by the chief surgeon right now.

A．operated
B．having been operated
C．is operated
D．is being operated
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单项选择题
Some companies have introduced flexible working time with less emphasis on pressure ______.
A．than more on efficiency
B．but more efficiency
C．but more on efficiency
D．than more efficiency
单项选择题
Although his work was often ______ and ______ , he was promoted any way, simply because he had been with the company longer than anyone else.
A．negligent ... creative
B．incomplete ... imprecise
C．predictable ... careful
D．forceful ... extraneous
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