女,9岁。因上唇外伤性缺损行下唇组织瓣转移修复上唇缺损,其组织瓣成活后断蒂的时间为
A.术后1周B.术后2~3周C.术后4周D.术后1个月E.术后2个月
参考答案:B
— Did you see what the thief looks like?
— No, so quickly_______ that I couldn't see him clearly. [ ]
A. did he run away
B. ran away he
C. does he run away
D. he runs away
无牙颌牙槽嵴吸收的方向主要与骨质的致密度直接相关,上、下颌牙槽嵴吸收的方向是
A.上颌吸收的方向向上、向内;下颌向下、向外
B.上颌吸收的方向向上、向外;下颌向下、向外
C.上颌吸收的方向向上、向内;下颌向下、向内
D.上颌吸收的方向向下、向外;下颌向上、向外
E.上颌吸收的方向向上、向外;下颌向下、向内