1、2008職稱英語等級考試用書理工類第二部分閱讀判斷（二篇）第十一篇 Computer Mouse The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and

2、pasting1,drawing,and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think2 how it works until it gets dirty and we have to learn how to clean it. We learn to point at things before we learn to speak, so the mouse is a very n

3、atural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screens。but the mouse is still our workhorse. The computer mouse was invented in l964 by Douglas Englehart of Stanford University. As computer screens became more popular and arrow keys were used t

4、o move around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would he very useful. The introduction of the mouse, with the Apple Lisa computer in l983, really started the computer public on the road to relying on the mous

5、e for routine computer tasks.3 How does the mouse work? We have to start at the bottom, so think upside down tor now. It all starts with the mouse ball. As the mouse hall in the bottom of the mouse rolls over the mouse Dad, it presses against and turns two shafts. The shafts are connected to wheels

6、with several small holes in them. The wheels have a pair of small electronic light-emitting devices called lightemitting diodes (LED) mounted on either side4. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on

7、the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects a changing pattern of light, converts the pattern into an electronic signal, and sends the signal to the computer through wires in a cable that goes out the mouse body. This cable is the tai

8、l that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen. So far we have only discussed the basic computer mouse that most of you probably have or have used.5 One problem with this design is that the mouse gets dirty as t

9、he ball rolls over the surface and picks up dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.詞匯：Scroll v.(在顯示屏上)上下移動文本pad n.墊板mouse pad鼠標(biāo)墊板 graphics n.圖形,圖表tablet n.書寫板graphics tablet圖形書寫板workhorse n.重負(fù)荷T作部件shaft n.軸。桿狀物emit v.射出diode

10、 n.二極管cursor n.光標(biāo) optical adj.光學(xué)的注釋：1. copying and pasting：復(fù)制和粘貼2. without stopping to think：沒有停下來想一下?！皊top+動詞不定式”是“停下來去做某件事”,“stop+動名詞”是“停止做某件事”。例如： We stopped to rest for a while.我們停下來休息一會兒。 He stopped smokin9.他停止抽煙。3. started the computer public on the road to relying on the mouse for routine com

11、puter tasks：使廣大電腦用戶開始踏上一條依賴鼠標(biāo)完成常規(guī)電腦T作的道路。computer public：電腦公眾。road t0中的t0是介詞,所以后接動名詞relying。4. mounted on either sidemounted on both sides5. So far we have only discussed the basic computer mouse that most of you probably have or have used：到目前為止.我們只限于討論基本型的電腦鼠標(biāo),你們中間多數(shù)人也許擁有一個鼠標(biāo),也許你們已用過鼠標(biāo)。練習(xí)：1.Moat co

12、mputer users want to know how the computer mouse works. ARight BWrong CNot mentioned2.According to the author. general computer users need not to know how the computer mouse was invented. ARight BWrong CNot mentioned3.The computer mouse derives its name from tile cable that goes out its body, which

13、looks like the tail of a mouse. ARight BWrong CNot mentioned4.The key components of a computer mouse are the two LEDs. ARight BWrong CNot mentioned5.When an ordinary computer mouse gets dirty, it has to be replaced with a new one. ARight BWrong CNot mentioned6.The most durable computer mice on sale

14、are the IBM ones. ARight BWrong CNot mentioned7.The optical mouse is superior to the basic OHC in that the former has no moving parts ARight BWrong CNot mentioned答案與題解：1. B題句的意思是大多數(shù)電腦使用者都想了解鼠標(biāo)的工作原理。這與短文的介紹不符。短文第一段第三句說,大多數(shù)電腦使用者天天用電腦卻沒有想到要了解一下鼠標(biāo)的工作原理。題句的信息是錯誤的,故答案為B。2. C題句表達(dá)的意思是,短文作者認(rèn)為一般電腦使用者無需了解鼠標(biāo)是如何

15、發(fā)明的。題句表達(dá)的內(nèi)容短文中找不到,故答案為C。3. A題句說鼠標(biāo)的名稱源自鼠標(biāo)主體拖出的一根看上去像鼠尾巴的電線,這與短文第三段倒數(shù)第二、第三句所介紹的信息相符,所以,本題選項(xiàng)A是正確答案。4. A短文的第三段說到鼠標(biāo)的部件有滾動部件如滾球,還有光電裝置如二極管等。二極管將光信號轉(zhuǎn)換為電信號,傳送到電腦,電腦根據(jù)收到的電信號做出相應(yīng)的反應(yīng),因此,二極管是鼠標(biāo)的主要部件.而滾輪等只是輔助性的機(jī)械部件。題句對短文信息的推斷是正確的,故答案為A。5. B題句說鼠標(biāo)臟了,就得換用新的。這一說法與短文包含的信息不符。第一段第三句和末段倒數(shù)第二句都提到,鼠標(biāo)臟了,可以擦干凈再用。題句的信息是錯誤的,故答

16、案為B。6. C題句說,當(dāng)前市場上出售的最耐用的鼠標(biāo)是IBM生產(chǎn)的鼠標(biāo)。這一說法短文中找不到,故答案為C。7. A末段說到光學(xué)鼠標(biāo)因?yàn)闆]有普通鼠標(biāo)使用的滾動部件,所以不會吸附灰塵,用不著擦拭,這是一種新型的鼠標(biāo)。題旬是對短文信息的一種合理的推斷,所以選項(xiàng)A是答案。第十三篇The Northern Lights The Sun is stormy and has its own kind of weather. It is so hot and active that even the Suns gravity cannot hold its atmosphere in check1! Ener

17、gy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour2. These particles are called plasma, and the stream of plasma3 coming from the Sun is called the solar wind. The more active the Sun, the stronger the solar wind. The

18、solar wind constantly streams toward the Earth, but dont worry because a protective magnetic field surrounds our planet. The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles. The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earths magne