成秞细胞瘤的好发部位是：（）
A.下颌前牙区
B.上颌前牙区
C.下颌体及下颌角部
D.下颌骨升支部
E.上颌后牙区
参考答案：C
It is virtually impossible to () the number of people in the world who have acquired an adequate working knowledge of English in addition to their own languages.
A. appraise
B. evaluate
C. assess
D. estimate
与子宫脱垂无密切关系的是（）
A. * * 前后壁膨出
B.陈旧性会阴裂伤
C.前位子宫
D.张力性尿失禁
E.宫颈糜烂及溃疡
