问题 单项选择题

将单位内部的局域网接入 Internet(因特网)所需使用的接入设备是______。

A.防火墙

B.集线器

C.路由器

D.中继转发器

答案

参考答案:C

解析:路由器工作在网络的网络层上,当数据包要在不同协议、不同体系结构的网络之间进行传输时,路由器不仅可以进行路由选择,还可以进行数据包的格式转换以适应这种传送。

阅读理解

The White Tower

The White Tower was started in 1076 and completed in 1079. It was the oldest of the 20 towers which used to stand here. The white tower of London was first built by William, the conqueror to protect and control the city. Today it is the most popular tourists sight and attracts over three million visitors a year.

It was sometimes used as a palace for the kings and queens of English until the time of James I, but it is best known as a prison and execution place. Within the walls of the Tower, princes have been murdered, spies shot and Queens killed. One of the most famous executions was that of Ann Boleyn in 1536. She was killed because she couldn’t give Henry III a son.

The tower was also the scene of one of London’s most famous mysteries, known as the mystery of the princes in the Tower. Their uncle announced he himself was the new king and asked the people to call him Richard III. After that the two boys disappeared. It was the two sons that were murdered by the order of their uncle.

68. The Tower of London ________.

A. was started in the tenth century and finished in the eleventh century

B. is the oldest tower in the world

C. was first put up by James I

D. was built to protect and control London

69. The tower was used as a palace_______.

A. till the time James I

B. until the time of William, the conqueror

C. after James I came to power

D. when James I came to power

70. Anne Boleyn was put to death because she______.

A. didn’t get on well with Henry III

B. couldn’t give birth

C. couldn’t give Henry III a son

D. turned against her husband

71.They say who killed two sons of Edward IV?

A. Edward IV    B. Richard III      C. Anne Boleyn      D. James I

单项选择题