第22题: [单项选择]以下最可能是心脏器质性杂音的为 A. 静脉嗡鸣声 B. 锁骨上杂音 C. 心尖部舒张期雷0鸟样杂音 D. Graham-Steell杂音 E. 心尖部2/6级收缩期杂音 参考答案:C 答案解析:[解题思路] 心尖部舒张期雷鸣样杂音为器质性二尖瓣狭窄的典型杂音。Graham-Steell杂音,由器质性病变引起者极少,多由于肺动脉扩张导致相对性关闭不全。-而心尖部3/6级以下收缩期杂音常为生理性
第29题: [单项选择]{{B}} Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. 19. B. 18. C. 91. D. 81. 参考答案:B 答案解析:[听力原文]
How many mistakes have been found in the Wangfujing and Xidan areas last year by the student