题目内容：

听下面一段较长对话，回答以下小题。

1.What is the man famous for?

A. Collecting coins. B. Starting a college. C. Teaching mathematics.

2.When did the man begin to collect coins?

A. When he was thirteen years old. B. When he got a special book from his uncle.

C. When he picked some rare coins on the road.

3.Where does the man usually get coins?

A. From his friends. B. From small shops. C. From other collectors.