单项选择题

Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now, listen to the conversation.
What is the main subject of the debate

A．The popularity of advertisement.
B．The function of advertisement.
C．The ways of advertisement.
D．The benefits of advertisement.

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单项选择题

单项选择题

Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation. What is the main subject of the debate 您的浏览器不支持 audio 元素。