问题 单项选择题

以下关于SET协议的描述中,错误的是【 】

A.可以保证信息在因特网上传输的安全性

B.可以让商家了解客户的所有帐户信息

C.可以使商家和客户相互认证

D.需要与认证中心进行交互

答案

参考答案:B

解析:SET的设计目标是信息在公共因特网上安全传输、订单信息和个人账号信息隔离、持卡人和商家相互认证。认证必然涉及到与认证中心进行交互。

单项选择题
阅读理解

Cliff House

Top of the world

Near the North Pole

Christmas, 1925

My dear boys,

I am dreadfully busy this year一it makes my hand more shaky than ever when I think of it一and not very rich; in fact awful things have been happening, and some of the presents have got spoilt, and I haven't got the North Polar Bear to help me, and I have had to move house just before Christmas, so you can imagine what a state everything is in, and you will see why I have a new address, and why I can only write one letter between you both.

|K] It all happened like this: one very windy day last November my hood blew off and went and stuck on the top of the North Pole. I told him not to, but the North Polar Bear climbed up to the thin top to get it down一and he did. The pole broke in the middle and fell on the roof of my house, and the North Polar Bear fell through the hole it made into the dining room with my hood over his nose, and all the snow fell off the roof into the house and melted and put out all the fires and ran down into the cellars where I was collecting this year's presents, and the North Polar

Bear's leg got broken.

He is well again now, but I was so cross with him that he says he won't try to help me again一I expect his temper is hurt, and will be mended by next Christmas.

I send you a picture of the accident and of my new house on the cliffs above the North Pole(with beautiful cellars in the cliffs).

That's all. Good Bye!

小题1:Why can the writer only write one letter to the two boys?

A.His hand is more shaky than ever.

B.He is extremely busy.

C.He has got a new address.

D.He has to help the North Polar Bear.小题2:Which of the following is most likely to be the picture of the accident?

小题3:The underlined "him',refers to

A.the hood

B.the pole

C.the hale

D.the bear