单项选择题

It is the （）of the police to prevent and detect crime and of the law courts to punish crime.

A．affair
B．business
C．occupation
D．duty

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单项选择题
Should every government agency have （）to the computer files of every other agency

A．access
B．entrance
C．accent
D．entitlement
单项选择题
There are several characteristics of the book （）special attention.

A．worthy
B．worthy of
C．worth of
D．worthless
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