单项选择题

Questions 3 and 4 are based on the news report you have just heard.

A．A study of the fast-food service.
B．Fast food customer satisfaction.
C．McDonald"s new business strategies.
D．Competition in the fast-food industry.

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单项选择题

问答题

Questions 3 and 4 are based on the news report you have just heard. 您的浏览器不支持 audio 元素。