单项选择题

A．There is no actual sales take place.
B．It is up to parents to monitor their children.
C．Children understand what an advertisement is trying to do.
D．Children are provided a game in return for the information.
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单项选择题
A．She has bought a new one.B．Her brother has just given her one.C．She has only an old one,D．She has none at present.
A．She has bought a new one.
B．Her brother has just given her one.
C．She has only an old one,
D．She has none at present.
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