对脊柱结核的检查，CT优于平片在于显示：
A．椎间隙变窄
B．骨质破坏
C．骨质增生
D．钙化
E．椎管内脓肿
参考答案：E
—Did Alice enjoy the concert held in Grand Theater yesterday?
—Yes, she did. She ______ such an excellent concert for a long time.[ ]
A. didn’t take part in
B. wouldn’t take part in
C. hasn’t been in
D. hadn’t been in
球菌性口炎的病因是
A．细菌感染 B．真菌感染 C．自身免疫功能缺陷D．变态反应 E．病毒感染
