单项选择题

Questions 11 to 18 are based on the conversation you have just heard

A．To cancel his trip.
B．To catch a later flight.
C．To go to bed early.
D．To ask for a wake-up call.

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People here still keep their lifestyle today ______ (殊不知他们的习惯对他们自己和后代都有害).

Questions 11 to 18 are based on the conversation you have just heard 您的浏览器不支持 audio 元素。