上题材料中的"行"体现了() A感性认识不如理性认识可靠 B实践第一的观点 C学习书本知识比实践来得重要 D对事情要有所耳闻
____________he was ill, ____________ he went to school this morning.
-___________ do you wash your hair?-Three times a week.
There is _____________ with my computer. Can you help me?
Wang Fang is young, but she plays Ping-Pong ___________ her mother.
It’s bad for our eyes ______in bed.