第28题: [单项选择]稳定性股骨颈骨折是______ A. 头下骨折 B. 经颈骨折 C. 基底骨折 D. 内收骨折 E. 外展骨折 参考答案:E 答案解析:股骨颈骨折按照正位X线片所示Pauwels角(即远端骨折线与两髂嵴连线的延长线所形成的夹角)的大小分为内收型和外展型,Pauwels角大于50°为内收型,骨折端遭受的剪切力大,骨折接触面少,移位多且易
第30题: [单项选择]Passage Three Questions 32 to 35 are based on the passage you have just heard. A. Influence of mass media on our lives. B. Profitability of mass media. C. Mass media and its short history. D. Mass media and politics. 参考答案:C 答案解析:[听力原文]32-35 Mass media is the term used to denote, as a class, that section of the media spec