第16题: [单项选择]Why do learner drivers have to keep their present jobs A. They don’t want their present bosses to know what they’re doing. B. They cannot earn money as taxi drivers yet. C. They want to earn money from both jobs. D. They look forward to further promotion. 参考答案:B 答案解析:[解析] 由文章最后一句可知在训的司机是不能像正式上岗的司机一样赚钱的。
第19题: [多项选择]治疗4~8岁的先天性髋关节脱位的正确方法是 A. 手法复位 B. 切开复位或Salter(沙尔特)骨盆旋转截骨术 C. 行Chiari(查理)骨盆内移截骨术 D. 可附加股骨转子下截骨木 E. 硅式石石膏固定 参考答案:B,D 答案解析:该组病儿脱位时间长,软组织挛缩更为明显,髋臼发育更差,往往小而浅,而且臼底有大量脂肪纤维组织存在,手法复位极为困难,因而绝大多数需做切开复位。但在切开复位前必须做牵引2~3周,直至股骨头牵引到髋臼平面