单项选择题

Questions 17 to 20 are based on the following passage. At the end of the passage you will be given 20 seconds to answer the questions.
Now listen to the passage.
If a consumer wants a quick settlement of his problem, whom is it better to complain to

A．A shop assistant.
B．A store manager.
C．The manufacturer.
D．A public organization.

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单项选择题

单项选择题

Questions 17 to 20 are based on the following passage. At the end of the passage you will be given 20 seconds to answer the questions. Now listen to the passage. If a consumer wants a quick settlement of his problem, whom is it better to complain to 您的浏览器不支持 audio 元素。