参考答案

正确答案：C
解析：[听力原文]
W: Can you tell me the least expensive way to get to New York?
M: If you go by bus, it's only $ 2.50. But if you go by train, it's almost twice that much.
Q: What can we infer from the man?
由选项推测本题与火车和公交车的比较有关。女士问去纽约最便宜的方式，男士回答说乘火车的价钱是坐公交车的两倍，故正确答案为C)。