单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.
The advertisements are intended to be seen by（）

A．parents only.
B． children only.
C．school teachers.
D．whole families.

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单项选择题

A．the size of the show.
B．the cost of the stand.
C． the basic furniture.
D．the visitor number.

单项选择题

A．family magazines.
B．Sunday newspapers.
C．morning television.
D．teenage magazines.

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation. The advertisements are intended to be seen by（） 您的浏览器不支持 audio 元素。