下列( )不是采用成本领先战略的原因。 A．形成进入壁垒 B．增强企业讨价还价的能

刑法规定，犯罪的时候怀孕的妇女，不适用死刑。 ( )

用所给词的适当形式填空。

1. Jim came to China several years ago. Now he can _____ (sing) Beijing Opera very well.

2. He likes _____ (play) the trumpet.

3. Would you like _____ (join) our art club?

4. I need some _____ (help) to carry this heavy bag.

5. He can't _____ (swim) across the river. He is too young.

6. Beijing Opera _____ (be) very beautiful, and people can learn about Chinese history by listening to it.

7. She wants _____ (talk) to you for some information about the English corner (角).

8. Tom's little brother always _____ (ask) some questions.

9. Don't _____ (call) me at night.

10. We must _____ (arrive) at school at 6:30 every morning.

处理开放性骨折最关键的步骤是（）。

A．应用抗生素

B．彻底清创

C．修复软组织

D．及早闭合伤口

E．固定骨折

收缴假币必须当面收缴，即收缴的操作（）、（）须在（）或（）内进行。