二、听对话，选择最佳答案。（共10小题，每小题1分，共10分）
你将听到3段对话，请根据对话内容，选出每个问题的最佳答案，并在答题卷上按要求作答。每段对话读两遍。
请听第1段对话，回答第6-8小题。
6. How many tickets does the man need to pay?
A. One. B. Two. C. Three.
7. How much is one ticket, according to the passage？
A. 80 dollars. B. 40 dollars. C. 8 dollars.
8. When will the train set off?
A. At six o’clock. B. At seven o’clock. C. At half past seven.
