单项选择题
The autumn air felt ____ so he went to fetch a coat.
A．cool
B．severe
C．harsh
D．chilly
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单项选择题
A managing director cannot expect to have much time to ____ to purely personal matters.
A．reserve
B．spare
C．concentrate
D．devote
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单项选择题
One thing it's safe to say about robots is that anything you can write about them will already be ____ by the time it's read. That's how fast robot technology is developing.
A．out of order
B．out of date
C．out of control
D．out of sight
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