正常成年人腰椎的椎管前后径的范围为()
A.5～15mm
B.12～21mm
C.15～25mm
D.14～15mm
E.32～35mm
参考答案：C
Her sister is a nurse. She usually ____ a white uniform and helps doctors.[ ]
A. wears
B. wearing
C. put on
D. puts on
甲肝患者的粪便排毒期在（）
A.潜伏期至黄疸消退
B.潜伏期至症状消失
C.黄疸出现至黄疸消退
D.起病前2周至ALT高峰期后1周
E.前驱期至生化检查正常
