剪贴板是Windows程序或文件之间用于传递信息的A．存储队列B．永久存储区C．存储堆栈D．临时存储区

A．Never mind

B．The more you read,the faster you ’ ll be

C．When in Rome,do as Romans do

If you are Japanese and want to improve your Chinese, you can send a letter to ______.

A．green＠dircon. co. uk

B．GMoates＠aol. com

C．Yanmingli＠hotmail. com

D．Ruediger-kabas＠homail. com

Consider following Figure. Assuming TCP Reno is the protocol experiencing the behavior shown above, answer the following questions. In all cases, you should provide a short discussion justifying your answer. 1). Identify the intervals of time when TCP slow start is operating. 2). Identify the intervals of time when TCP congestion avoidance is operating. 3). After the 16th transmission round, is segment loss detected by a triple duplicate ACK or by a timeout？ 4). After the 22nd transmission round, is segment loss detected by a triple duplicate ACK or by a timeout？ 5). What is the initial value of ssthresh at the first transmission round？ 6). What is the value of ssthresh at the 18th transmission round？

If you want to improve your speaking skills， you can go to____________．

A.Room 501

B.Room 502

C.Room 601

D.Room 602

If you want to improve the taste, try ______ some sugar.

A．to add

B．to adding

C．add

D．adding

If you want to improve the taste, try ______ some sugar.

A．to add

B．to adding

C．add

D．adding

TCP/IP(Transmission Control Protoco/Internet Protocol)指传输控制协议。()

If you want to improve your position and find a good job，it is important to______．

A．understand the application form. of the company

B．make a decision on the basis of your own desire

C．improve your writing skills

D．get a job related to your education