— Dear students, please read every word carefully. The more 　　　 you are, the　　　 mistakes you’ll make.

— Thanks, Mr. Lee. We can do it well.

A．careful; fewer

B．careful; less

C．carefully; fewer

D．carefully; less

以下符合急救与防护“四先四后”原则的是（）

A．先抢后救

B．先轻后重

C．先缓后急

D．先病后伤