根据首字母提示补词。

1. Wang Meng b_______ a skating champion whcn she was 19.

2.  He likes playing the violin very much, and he wants to be a v_______ when he grows up.

3.  FIe kept the hiccupping world r_______for 69 years.

4.  What is your brother's m_______in the university?

5.  We could hum many difficult p_______ of music.

6. My mother likes to watch a TV show c_______ I,ucky 52.

7.  The problem is t_______ difficult for me to work out.

8.  I'm thirsty.  I want to have a d_______.

9.  Zhou Yang w_______ a gold medal at the Olympic Games of 2010.

10.  October lst is our N_______ Day.

折旧基础数随着使用年限变化而变化的折旧方法是（）。

A.年限平均法

B.工作量法

C.双倍余额递减法

D.年数总和法