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热身词汇：
around 到处，在...附近
expense 费用，花费，代价
听力题目：
Q: Which one is not true according to the conversation?
A: Max hadn't meet everyone else before.
B: David is missing because he didn't want to go to Minsk.
C: Max got plenty of money for his research.
D: Phoebe didn't know where David is.
