根据首字母及句意完成单词.

1. Liu Xiang is a r           star.

2. I have a h             body(身体),so I`m very strong.

3. Tom has chicken, tomatoes and carots for d               

4. Do you like d              ?Yes, I like ice cream very much.

简述流水线技术提高运算速度的主要方式。