导致耳源性颅内并发症的最常见的球菌有：（）、（）和（）。
参考答案：金黄色葡萄球菌；溶血性链球菌；肺炎球菌
After the class was over, the student apologized ___ the teacher ____ his coming late.
A．for; to
B．to; with
C．with; to
D．to; for
科学管理的中心问题是“提高劳动生产率”
