活动目录的物理结构由（）、（）、（）组成。
参考答案：域控制器；活动目录站点；活动目录分区
_____ of danger in the street at night, she had to go home, with a friend _____ her. [ ]
A. Warned, followed
B. Warning, following
C. Warning, followed
D. Warned, following
在下列哪一组显微镜视野中所观察的细胞数目最多、视野最明亮 ( )
