边说边笑吃东西,食物容易误入气管,其原因是[ ]
A.气流冲击,声门裂开大
B.气流冲击,喉腔扩大
C.会厌软骨没能盖住喉口的入口
D.环状软骨扩大
答案:C
—Could you help me find my book?
—_______. [ ]
A. Sorry, you couldn't
B. Yes, you could
C. Please ask your mother
D. Certainly
诊断肝硬化静脉曲张的部位和程度的检查是()。
A.腹腔镜
B.腹部平片
C.肝穿刺活检
D.肝脏CT
E.纤维内镜