心理健康与心理障碍是相对的概念，二者相比较而存在，其中没有绝对的界线。
参考答案：对
-How did you find the film Harry Potter and the Deathly Hallows?
-____. I can't think too highly of it.[ ]
A．It makes no sense
B．It's really amazing
C．It's awful
D．It's up to you
常见于颌面和颈部接受放射治疗的患者，也称为放射性龋（）
A.猛性龋
B.静止龋
C.继发龋
D.潜行性龋
E.线形牙釉质龋
