第22题: [单项选择]以下腹外疝中最容易发生嵌顿的是() A. 腹股沟斜疝 B. 股疝 C. 直疝 D. 切口疝 E. 白线疝 参考答案:B 答案解析:由于股管几乎是垂直的,疝内容物似直线状下坠,但一出卵圆窝后,却折转向前,形成一锐角,加以股环本身狭小,周围韧带坚韧,极易发生嵌顿,且迅速发展为绞窄。
第37题: [单项选择]Passage One Questions 26 to 28 are based on the passage you have just heard. A. Its private airline service. B. Being an American Post Office. C. Its transporting small packages. D. The low cost of its service. 参考答案:C 答案解析:[听力原文] 26-28
Federal Express is a private airline service. It expands the Postal Service