题目内容：
回答题Directions:You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D.After listening, you will have 10 seconds to check your answer to each question. You will hear the recording only once.Questions 11-13 are based on a dialogue between a clerk of Air-ticket Booking office and a customer.
Where does the conversation take place? A．At an airport.
B．On the phone.
C．In a ticket office.
D．We don' t know.
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