根据所给汉语完成单词。

1. Peter didn't _______ (意识到) his mistake at that time.

2. The old man was too tired and he was moving _______ (慢).

3. Don't be _______ (害怕) to ask for help if you need it.

4. I want to _______ (加入) an English club to make more friends who have the same interest.

5. You can _______ (容易) understand if you often listen to it.

内环境稳态的维持要依靠机体的调节，但外界环境也会影响稳态，下列事实中不支持这一观点的是[ ]

A．夏天长期待在空调房间容易引起“空调病”

B．有人到青藏高原后会头疼乏力、血压升高

C．人屏息一段时间后，呼吸运动会明显加强

D．长期处于高温环境可能会引起“中暑”