Part ADirections: You will hear 10 short dialogues. For each dialogue, there is one questi

Part A

Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE.

听力原文：W: Can you tell me the least expensive way to get to California？

M: If you go by bus it's only $30. But if you go by train, it's almost twice that much.

What does the man explain to the woman？

A．There are two buses every day.

B．The train is faster than the bus.

C．The bus is cheaper than the train.

D．The train is cheaper than the bus.