问题 单项选择题 A1/A2型题

下列哪项一般不用于痄腮的治疗()

A.清热疏风

B.清热解毒

C.软坚散结

D.疏解少阳

E.健脾平肝

答案

参考答案:E

阅读理解

阅读理解。

      That little "a" with a circle curling around it that is found in E-mail addresses is most commonly referred

to as the "at" symbol.

      Surprisingly though, there is no official, universal name for this sign. There are dozens of strange terms

to describe the "@" symbol.

      Before it became the standard symbol for electronic mail, the "@" symbol was used to represent the cost

of something or how heavy something is. For instance, if you purchased 6 apples, you might write it as 6

apples "@" $1.10 each. 

      With the introduction of e-mail came the popularity of the "@" symbol. The "@" symbol or the "at sign"

separates a person's online user name from his mail server (服务器) address. For instance,

joe@uselessknowledge.com. Its widespread use on the Internet made it necessary to put this symbol on

keyboards in other countries that have never seen or used the symbol before. As a result, there is really no

official name for this symbol.

      The actual origin of the symbol remains a mystery. History tells us that the @ symbol came from the

tired hands of the Middle Ages. During the Middle Ages before the invention of printing machines, every

letter of a word had to be copied with great efforts by hand for each copy of a published book. The monks

that performed these long, boring coping duties looked for ways to reduce the number of individual strokes

(笔画) per word for common words. Although the word "at" is quite short to begin with, it was a common

enough word in text and documents so that those monks thought it would be quicker and easier to shorten

the word "at" even more. As a result, the monks changed the shape of "t" into a circle to surround "a", thus

leaving out two strokes in the spelling "t".

1. Which of the following is the best title of the passage? [ ]

A. How"at" developed into @.

B. How @ came into being.

C. How monks invented @.

D. How people wrote the cost of something.

2. Which is NOT the reason for the monks to spell "at" as @? [ ]

A. Though "at" is short, it was used very often.

B. The monks wanted to be quicker and easier with their copying.

C. The monks wanted to invent a new word.

D. Copying work was long and boring for them.

3. According to paragraph 5, which is TRUE about the symbol of @ today? [ ]

A. When you are online, you must use the @ symbol.

B. Kittly 163.com @ is an email address.

C. In countries where @ is used, governments have given it an official name.

D. It is likely to find the @ symbol on computer keyboards worldwide.

单项选择题

  大家都知道,计算机的记忆能力是十分惊人的,即使是关掉电源以后,该记住的也不会忘记。这是芯片的功劳。但是,有了瓦伦的发明,电子配件也可以有计算机芯片般良好的记忆能力了。当然,现在的蜂窝式移动电话和数码摄像机等电器中已经配有非易失性芯片,但是,制造成本非常昂贵,同常规芯片相比,速度也很慢。瓦伦的芯片制造成本和平常芯片的一样低廉,速度也同样快。1998年4月,第一批新型芯片正式问世。同计算机芯片相比,电子设备上的芯片显得大多了,所以瓦伦戏称他的发明为“大象芯片”――他的发明和得奖完全是“意外之财”:他们做试验时一时疏忽,把电路上的一个晶体管烧得过热。出于好奇,他们给这个晶体管通了电,关掉电源后,晶体管内还带电。以前从未注意到硅片做的晶体管还有这个特性,即使是注意到了,肯定也只是觉得好玩而已。几周以后,在某次电子会议休会时,瓦伦提到了他试验室里好玩的事,有位同行脱口指出,那很可能会解决非易失性记忆问题!

  瓦伦才真意识到,好玩的东西有好大的市场潜力。

                    (选自《新华文摘》1999年第3期)

“这个特性”指代什么()

A.晶体管内带电

B.硅片做的晶体管带电

C.晶体管烧热后带电

D.烧热后的晶体管,停电后还带电