根据句意及首字母补全在本课中出现的单词。

1. They met the old man on their w______ to school.

2. Li Mei is sitting in the c______ of the room.

3. I go p______ the post office everyday.

4. Don't c_______ the road when the light is red.

5. There are many books in the b______.

6. Please show me your n______.

7. It is s______ Today. Let's go out for a walk.

8. Let's s______ to have a rest.

以下说法正确的是

A．出生时关节盘及髁突表面软骨中均有血管分布
B．出生时仅关节盘中有血管分布
C．出生时仅髁突表面软骨中有血管分布
D．关节盘中终生有血管分布
E．髁突表面软骨中终生有血管分布