第20题: [单项选择]一腹壁静脉曲张患者,脐以上血流方向由下至上,脐以下血流由上至下。该患者应考虑为() A. 上腔静脉阻塞 B. 下腔静脉阻塞 C. 门静脉高压或门静脉阻塞 D. 脐静脉阻塞 E. 髂外静脉阻塞 参考答案:C 答案解析:脐以上血流方向由下至上,脐以下血流由上至下考虑门静脉高压或门静脉阻塞;脐以上、以下血流方向均由下至上考虑下腔静脉阻塞;脐以上、以下血流方向均由上至下考虑上腔静脉阻塞。
第37题: [单项选择]Independent schools are actually called ______. A. religious schools B. boarding schools C. secondary schools D. private schools 参考答案:D 答案解析:本题为细节辨认题。文章第一段第一句讲到“Seven percent of British school children go to private schools called independen