—Are these CDs ________?    

—No, they are not mine. They belong to _______.[ ]

A. your; her        

B. yours; her

C. you; hers          

D. yours; she

（）是常用分配网络的拓扑结构。

A.星形分配网络

B.菱形分配网络

C.双环形分配网络

D.网状形分配网络