吃鱼时不小心被鱼刺卡住咽喉，喝一点醋往往能使鱼刺咽下，原因是醋能[ ]
A．消化掉鱼刺
B．刺激咽喉扩大
C．使鱼刺变软
D．使鱼刺变脆
答案：C
Can you _____ me a job when I get there? You know, I have to work in order to pay for my schooling. [ ]
A. apply
B. arrange
C. provide
D. guarantee
骨盆骨折最常见的泌尿系并发症为（）
A. * * 外口狭窄
B. * * 膜部损伤
C. * * 假道形成
D. * * 内口狭窄
E. * * 球部损伤
