2017年職稱英語理工類閱讀判斷練習(xí)題(6)

　　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 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 natural pointing device. Other computer pointing devices include light pens，graphics tablets and touch screens，but the mouse is still our workhorse.3

　　The computer mouse was invented in 1964 by Douglas Englehart of Stanford University.As computer screens became more popular and arrow keys were used to 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 be very useful.The introduction of the mouse，with the Apple Lisa computer in 1983，really started the computer public on the road to relying on the mouse for routine computer tasks.

　　How does the mouse work? We have to start at the bottom，so think upside down for now.It all starts with the mouse ball.As the mouse ball in the bottom of the mouse rolls over the mouse pad，it presses against and turns two shafts.The shafts are conneected to wheels

　　with several small holes in them.The wheels have a pair of small electronic light-emitting devices called light-emitting 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 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 tail 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 the 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/skrEul/v.(在顯示屏上)上下移動(dòng)文本 pad/pAd/n.墊板

　　mouse pad 鼠標(biāo)墊板 graphics/5^rAfiks/n.圖形，圖表

　　tablet/5tAblit/n.書寫板 graphics tablet 圖形書寫板

　　workhorse/5w\:khC:s/n.重負(fù)荷丁作部件 shaft/FB:ft/n.軸，桿狀物

　　emit/i5mit/v.射出 diode/5daiEud/n.二極管

　　cursor/5kE:sE/n.光標(biāo) optical/5CptikEl/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。“stop+動(dòng)詞不定式”是“停下來去做某件事”，“stop+動(dòng)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(huì)兒。

　　He stopped smoktng.他停止抽煙。

　　3....started the computer public on the road to relying on the mouse for routine computer tasks：使廣大電腦用戶開始踏上一條依賴鼠標(biāo)完成常規(guī)電腦工作的道路。computer public：電腦公眾。road to中的to是介詞，所以后接動(dòng)名詞relying。

　　4.mounted on either side=mounted on both sides

　　5.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(gè)鼠標(biāo)，也許你們已用過鼠標(biāo)。

　　練習(xí)：

　　1.Most computer users want to know how the computer mouse works.

　　ARight BWrong CNot mentioned

　　2. According to the attthor，general computer users need not to know how the computer mouse was invented.

　　ARight BWrong C Not mentioned

　　3.The computer mouse derives its name from the cable that goes out its body，which looks like the tail of a mouse.

　　A.Right BWrong CNot mentioned

　　4.The key components of a computer mouse are the two LEDs.

　　ARight BWrong CNot mentioned

　　5.When an ordinary computer mouse gets dirty，it has to be replaced with a new one.

　　ARight BWrong CNot mentioned

　　6.The most durable comptner mice on sale are the IBM ones.

　　ARight BWrong CNot mentioned

　　7.The optical mouse is superior to the basic one 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(cuò)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)的名稱源白鼠標(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(dòng)部件如滾球，還有光電裝置如二極管等。二極管將光信號(hào)轉(zhuǎn)換為電信號(hào)，傳送到電腦，電腦根據(jù)收到的電信號(hào)作出相應(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(duì)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(cuò)誤的，故答案為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(dòng)部件，所以不會(huì)吸附灰塵，用不著擦拭，這是一種新型的鼠標(biāo)。題句是對(duì)短文信息的一種合理的推斷，所以選項(xiàng)A是答案。