用适当的介词填空。

1. Every sportsman is training hard ________ the Beijing Olympics.

2. There are many different theme parks ________ the world.

3. Liu Xiang is a symbol ________ China's international sporting success.

4. If you are a famous sportsman, you'll be asked to appear ________ advertisements, films and so on.

5. ________ other sports stars, Wang Hao started training when he was very young.

6. Du Li won the first gold medal ________ China at the Athens Olympics.

7. Zhang Yining doesn't want to spend too much time away ________ sport.

8. Wang Bilin noticed Zhang Yining's skill ________ playing table tennis.

线性链表不具有的特点是

A．随机访问

B．不必事先估计所需存储空间大小

C．插入与删除时不必移动元素

D．所需空间与线性表长度成正比