单项选择题

Questions 4 to 6 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. Which of the following is NOT mentioned as a source of information

A．Consumers.
B．Publications.
C．The sales department.
D．Businessmen.

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单项选择题

单项选择题

Questions 4 to 6 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. Which of the following is NOT mentioned as a source of information 您的浏览器不支持 audio 元素。