单项选择题

A．It should be higher.
B．It’s very good.
C．It’s the same as the post office pays.
D．It varies according to the person’s experience.
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单项选择题
A．It would do him good to go out for a while.B．He ought to do the first ten problems again.C．She could help him with the problems.D．He should be finished with the problems by two.
A．It would do him good to go out for a while.
B．He ought to do the first ten problems again.
C．She could help him with the problems.
D．He should be finished with the problems by two.
单项选择题
A．Operate metal detectors.B．Require each passenger to show photo identification.C．Make a body search by hand.D．Operate X-ray machines to screen baggage.
A．Operate metal detectors.
B．Require each passenger to show photo identification.
C．Make a body search by hand.
D．Operate X-ray machines to screen baggage.
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