在IEEE 802.4标准中，Token Bus网从物理上看它是一个( )的局域网。
A．总线结构
B．环型结构
C．星型结构
D．网状结构
参考答案：A
My brother _____while I ______.
A．reads; was doing my homework
B．read; did my homework
C．was reading; was doing my homework
D．was reading; did my homework
如何建筑“离百姓最近的政府”？
