引起牙齿病理性移位的主要因素是
A.牙周支持组织的破坏与合力的改变
B.急性根尖炎
C.急性牙周膜炎
D.女性激素水平的变化
E.牙周翻瓣手术
参考答案:A
子满的治法是()
A.健脾利水
B.养血安胎
C.二者均是
D.二者均不是
----______was it ______ they discovered the entrance to the underground palace?
----Totally by chance.
A.How, that
B.What, that
C.When, when
D.Where, that