手术时发现腹壁下动脉在疝囊颈外侧的是（）
A.腹股沟直疝
B.股疝
C.脐疝
D.腹股沟斜疝
E.白线疝
参考答案：A
—Do you mind if I close the window?
— ________. We should let in more fresh air.
A．Yes, go ahead
B．Of course not
C．I would like to close it.
D．I’d appreciate it if you didn’t.
慢性肾脏病恶化最常见的原因( )
A．甲状旁腺功能亢进B．感染C．贫血D．容量负荷过重E．铝中毒
