—To tell you the truth, you ______ to win the first prize in the competition.

—Sorry for having let you down.[ ]

A. have expected

B. are expected

C. were expecting

D. were expected

下列不属于计算机网络组成的是________。

A．网络通信协议

B．网络操作系统

C．互连的分布在不同地理位置的多台独立的“自治计算机”

D．单独的计算机