2014年职称英语综合类B级练习题:阅读判断

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　　第3部分：阅读判断。下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A;如果该句提供的是错误信息，请选择B;如果该句的信息文中没有提及，请选择C。

　　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 pasting, 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 think 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.

　　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 connected 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 side. 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 of 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 bare used. 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.

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

　　A. Right

　　B. Wrong

　　C. Not mentioned

　　17. According to the author, general computer users need not to know how the computer mouse was invented.

　　A. Right

　　B. Wrong

　　C. Not mentioned

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

　　A. Right

　　B. Wrong

　　C. Not mentioned

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

　　A. Right

　　B. Wrong

　　C. Not mentioned

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

　　A. Right

　　B. Wrong

　　C. Not mentioned

　　21. The most durable computer mice on sale are the IBM ones.

　　A. Right

　　B. Wrong

　　C. Not mentioned

　　22. The optical mouse is superior to the basic one in that the former has no moving parts.

　　A. Right

　　B. Wrong

　　C. Not mentioned

　　参考答案：

　　16.B【解析】句意：大多数计算机用户都想知道鼠标的工作原理是什么。

　　根据第一段第三句可知，大多数计算机用户天天用计算机，却没有想到要了解一下鼠标的工作原理……。由此可见此题是“错误”的。

　　17.C【解析】句意：作者认为一般的计算机用户不需要了解鼠标是如何发明的。

　　由第二段可知作者只介绍了鼠标的发明者和发明时间，并没有介绍计算机用户需不需要了解鼠标是怎么发明的。所以此题是“未提及”的。

　　18.A【解析】句意：电脑鼠标的命名得自于鼠标主体拖出的一根看上去像鼠尾巴的电线。

　　根据第三段倒数第二句、第三句可知是the tail that helps give the mouse its name。由此可见此题是“正确”的。

　　19.A【解析】句意：鼠标的主要部件是二极管。

　　根据第三段可知，鼠标的部件有滚动部件如滚球、光电装置如二极管等。二极管将光信号转换为电信号，传送到计算机，计算机根据收到的电信号作出相应的反应，因此，二极管是鼠标的主要部件。因此此题是“正确”的。

　　20.B【解析】句意：一个普通鼠标被用脏了，就必须更换新的。

　　根据第一段第三句可知，鼠标脏了，我们必须了解怎么清理它。最后一段倒数第二句也说到，滚球鼠标脏了，可以擦干净再用。由此可见此题是“错误”的。

　　21.C【解析】句意：目前市场上出售的最耐用的鼠标是IBM生产的。

　　由于文中并未提及任何有关IBM的信息，所以此题是“未提及”的。

　　22.A【解析】句意：光电鼠标比普通鼠标要好，因为它没有滚动部件。

　　最后一段说到光电鼠标没有普通鼠标的滚动部件，不会吸附灰尘，不用擦，是一种新型的鼠标。由此可知此题是“正确”的。