She was admitted to so excellent _______

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问题选择题

She was admitted to so excellent ________ university that her parents were proud of her.

A．/

B．a

C．an

D．the

答案

填空题

如图所示，某同学要连接由L₁和L₂组成的并联电路．若开关S要同时控制两盏灯，应将导线M端接到图中______（选填“A”或“B”）点；若开关S只控制L₁，则导线的M端应该接到图中的______（选填“A”或“B”）点．

单项选择题

信号微机监测系统车站采集柜最顶层称为（）。

A、C0层

B、C1层

C、C5层

D、C10层