单项选择题

It is prudent to keep your child within ______ when shopping.

A．distance
B．reach
C．bound
D．safety
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单项选择题
The French pianist has not decided yet which orchestra
A．is to work with
B．to work with
C．should work with
D．he will work
单项选择题
Education, reserved to the states or the people in the U.S., is a ______ of the state, not the federal government.
A．condition
B．performance
C．requirement
D．function
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