慢性泪囊炎是因下列哪个部位狭窄或阻塞所致
A．鼻泪管
B．泪小管
C．泪总管
D．泪小点
E．泪囊
参考答案：A
Allow children the space to voice their opinions, they are different from your own. [ ]
A.until
B.even if
C.unless
D.as though
该患者最可能的诊断是
A．腹股沟斜疝B．腹股沟直疝C．股疝D．腹壁疝E．嵌顿疝
