1 . 听下面一段独白，回答以下小题。
1. When did Mozart begin to compose music?

A．At the age of four.

B．At the age of five.

C．In his early teens.

2. Where was Mozart’s first major opera performed?

A．In Milan.

B．In Vienna.

C．In Salzburg.

3. What did Mozart do when he stopped performing?

A．He did business.

B．He taught for a living.

C．He composed music.