In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
A socket is basically an end point of a communication link between two applications. Sockets that extend over a network connect two or more applications running on (31) computers attached to the net-work. A socket (32) two addresses: (33) . Sockets provide a (34) communication channel between one or more systems. There are (35) sockets separately using TCP and UDP.

A．message and packet

B．packet and frame

C．stream and datagram

D．flow and block

对下列诗文理解不正确的一项是[ ]

A．《天净沙·秋思》前三句把九种不同的景物有机地连缀在一起，构成了一副萧瑟苍凉的秋景图。

B．孟浩然的《望洞庭湖赠张丞相》中极写洞庭湖的气势雄壮的句子是“八月湖水平，涵虚混太清”。

C．陶渊明在《五柳先生传》中引用黔娄之妻的“不戚戚于贫贱，不汲汲于富贵”一语，表明了自己高洁的志趣和人格。

D．杜牧在《赤壁》中用“东风不与周郎便，铜雀春深锁二乔”的诗句，以小见大，从反面评论赤壁之战。