问题 单项选择题

TCP/IP (71) layer protocols provide services to the application (72) running on a computer. The application layer does not define the application itself, but rather it defines (73) that applications need--like the ability to transfer a file in the case of HTTP. In short, the application layer provides an (74) between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP (75) layer consists of two main protocol options--the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).

(73)处填()。

A.services

B.processes

C.applications

D.address

答案

参考答案:A

解析:

[参考译文]

TCP/IP传输层协议为运行在计算机上的应用软件提供服务。应用层没有定义应用本身,而是定义了应用需要的服务,例如采用HTTP可以传输文件。简而言之,应用层提供了运行在计算机上的软件与网络之间的接口。TCP/IP应用层包括了很多的协议,HTTP仅是其中之一。TCP/IP传输层主要由两个可选的协议组成——传输控制协议(TCP)和用户数据报协议(UDP)。

解答题
阅读理解

阅读理解。

     Thinking is something you choose to do as a fish chooses to live in water. To be human is to think. But

thinking may come naturally without your knowing how you do it. Thinking about drinking is the key to

critical (判断性的) thinking. When you think critically, you take control of your thinking processes (过程).

Otherwise, you might be controlled by the ideas of others. Indeed, critical thinking is at the heart of education.

     The word "critical" here has a special meaning. It does not mean taking one view against another view, as

when someone criticizes another person for doing something wrong. The nature of critical thinking is thinking

beyond the easily seen-beyond the pictures on TV, the untrue reports in the newspapers, and the faulty

reasoning.

     Critical thinking is an attitude as much as an activity. If you are curious about life and desire to dig deeper

into it, you are a critical thinker. If you find pleasure in deep thinking about different ideas, characters, and

facts, you are a critical thinker.

     Activities of the mind and higher-order reasoning are processes of deep and careful consideration. They

take time, and do not go hand in hand with the fast speed in today's world: fast foods, instant coffee, and

self-developing film. If you are among the people who believe that speed is a measure of intelligence (智力),

you may learn something new from a story about Albert Einstein. The first time Banesh Hoffman, a scientist,

was to discuss his work with Albert Einstein. Hoffman was too nervous to speak. But Einstein immediately

put Hoffman at ease by saying, "Please go slowly. I don't understand things quickly."

1. Critical thinking is important to us because if we do not think critically, _______.

A. it will be hard for us to think naturally and fast

B. we might be controlled by other people's ideas

C. we will follow the ideas of others naturally

D. we might be footed by other people's ideas

2. If you are a critical thinker, you will _______.

A. think deeply about different ideas

B. trust the reports in the newspapers

C. take one view against another view

D. criticize other people for their mistakes

3. In the last paragraph, "something new" suggests that ________.

A. the smarter you are, the faster you do things

B. the faster you do things, the smarter you become

C. speed can improve intelligence

D. intelligence is not decided by speed

4. What would be the best title for the passage?

A. Thinking and Critical Thinking.

B. Understanding Critical Thinking.

C. Thinking Is Natural and Human.

D. Thinking Fast Means Intelligence.