题目内容：

听下面一段独白，回答以下小题。

1.Why does the speaker give the talk?

A. To announce some changes.    B. To apologize for an accident.

C. To inform passengers of leaving.

2.From which platform will the train to London leave?

A. 3.    B. 6.    C. 9.

3.When will the train to Bristol leave?

A. At 10:15 am.    B. At 10:55 am.    C. At 12:20 pm.

4.What do we know about Mr. Green?

A. He is travelling to London.    B. He works in the luggage office.

C. He lost his computer at the railway station.