单选题：听下面一段对话，回答第69至第71三个小题。Where does this conversation take plac

题目内容：

听下面一段对话，回答第69至第71三个小题。
Where does this conversation take place?
A. At a railway station.
B. At a coach station.
C. At an airport.

参考答案：

答案解析：

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