_____ the age of the thirty, Lily went to Australia to look for a job.     [ ]

A. On

B. At

C. In

D. With

固定桥粘固后短时间内出现咬合时疼痛，首先要检查的是（）

A.根尖状况

B.咬合状况

C.牙龈状况

D.牙槽骨状况

E.缺牙区牙槽嵴粘膜