用括号中所给词的适当形式填空

1. He spent two hours         _(do) his homework.

2. He is a famous____  _(piano).

3.  When were you______(birth)?

4.  How many______ (play) are there in a football team?

5. The movie______ (call) Harry Potter is my favorite.

6.  Can you hear a girl ______ (cry)  in the next room?

7.  Who was the first one______  ( reach)  the top of the mountain?

8. Deng Yaping ______(join) the national table tennis team in 1988.

9. We all stopped______ (talk) when our English teacher came in.

10. She__    __ (start)  ice skating when she was six.

对于风险厌恶型投资者，一般采用( )准则。

A．最大盈利决策

B．期望值决策

C．最小损失决策

D．偏差值决策