问题 单项选择题

计算机病毒是影响计算机系统正常运行的主要因素之一,目前以“PC 机+Windows操作系统”为攻击目标的计算机病毒有成千上万种。在下列有关计算机病毒的叙述中,错误的是:

A. Internet是目前传播计算机病毒的主要途径

B. 所有的计算机病毒都是程序代码

C. 计算机病毒不仅感染可执行程序,也可感染Word文档等数据文件

D. 完备的数据备份机制和管理机制是预防计算机病毒感染的最根本的手段

答案

参考答案:D

解析:本题考查计算机病毒的一些基本知识。计算机病毒,是指破坏计算机功能或 毁坏数据,影响计算机使用,并能自我复制的一组计算机指令或者程序代码。计算机 病毒也可以是一组计算机指令。预防计算机病毒必须安装防火墙,而备份数据只是补 救的一些措施,所以D不对。

阅读理解

Although English is not as old as Chinese, it is spoken by many people around the world every day. English speakers are always creating new words, and we should be able to know where most words come from.

Sometimes, however, no one may know really where a word comes from. Did you ever think about why hamburgers are called hamburgers, especially when they are not made with ham( 火腿 )? About a hundred years ago, some men went to America from Europe. They came from a big city in Germany called Hamburger. They didn’t speak good English, but they ate good food. When some Americans saw them eating round pieces of beef, they asked the Germans what it was. The Germans did not understand the question and answered. “We came from Hamburger.” One of these Americans owned a restaurant, and had an idea. He cooked some round pieces of beef like what the men from Hamburger ate. Then he put them between two pieces of bread and started selling them. Today “ hamburgers” are sold in many countries around the world.

Whether this story is true or not, it certainly is interesting. Knowing why any word has a certain meaning is interesting, too. The reason may be found in any large English dictionary.

小题1:According to the writer, English ______.

A.is as old as Chinese

B.is not so old as Chinese

C.is older than German

D.is very difficult to learn小题2:According to the story,_______.

A.few Americans like hamburgers

B.hamburgers are made with beef

C.hamburgers are made with ham

D.hamburgers were sold all over the world about a century ago小题3:According to the writer, which of the following can be found in any large English dictionary?

A.Where all the new words come from

B.Where those Germans came from

C.The reason why any word has a certain meaning.

D.The reason why English is spoken around the world小题4:According to the story, the word “hamburger” comes from ________.

A.China because it has a long history

B.England because Germans don’t speak good English

C.the round pieces of beef those people from Hamburger brought to America

D.English speakers because they always create new words

填空题