新生儿颌骨骨髓炎好发于
A.上唇 B.下唇 C.上颌骨 D.下颌骨 E.颧骨
参考答案:C
解析:上颌骨及其周边窦腔多、邻近组织感染易引起上颌骨炎症。
. I know what people are saying about me. Nevertheless, ________ is true. I hate those people.
A.none
B.neither
C.nothing
D.any
北京境内的北运河汇入海河以后注入()。
A.渤海
B.黄海
C.东海
D.南海