分析一名80岁老年人发生机械性肠梗阻的梗阻病因时,首先应想到的是
A.肠粘连所致
B.嵌顿性腹外疝
C.肠系膜血管栓塞症
D.蛔虫团阻塞
E.肠道肿瘤
参考答案:E
“久卧”最易伤的是()
A.气
B.血
C.肉
D.精
E.筋
— Can we meet at 3 o'clock tomorrow afternoon?
— That doesn't suit me. I'm afraid I _____. [ ]
A. will be working
B. will work
C. am going to work
D. am about to work