单词拼写：根据句意及所给首字母或中文提示完成单词。

1. This exercise is difficult but that one is e_________.

2. —Doctor, I have a toothache.    —Open your m________ and let me have a look.

3. The young man likes to eat out because he h________ to do the dishes at home.

4. Could you please s________ the floor? It's vey dirty after the dinner.

5. In some ways we look the same, in some ways we look d________.

6. China is in the east of ________ (亚洲).

7. Today is Tuesday and ________ (昨天) was Monday.

8. Peter's ________ (梦想) is to buy a big house for his parents.

9. I'm very ________ (口渴的). So I want to drink some water.

10. Could you please ________ (喂养) my cat when I'm on vacation?

替代互换的风险主要来自于( )。

A．债券收入现金流本身的税收特性不同

B．全部利率反向变化

C．纠正市场定价偏差的过渡期比预期的更长

D．价格走向与预期相反