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TThe optical mouse is superior to the basic one in that the former has no moving
parts.
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更多“TThe optical mouse is superior…”相关的问题
The optical mouse is superior to the basic one in that the former has no moving parts.
A．Right
B．Wrong
C．Not mentioned
The optical mouse is superior to the basic one in that theformer has no moving parts.
A. Right
B. Wrong
C. Not mentioned
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 (涂), 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 (图形) 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 (常规) 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 (轴). 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 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 (发现) a changing pattern of light, converts the pattern into an electronic signal, and sends the signal (发信号) 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. 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.
Most computer users want to know how the computer mouse works.
A．Right
B．Wrong
C．Not mentioned
A. Right
B. Wrong
C. Not mentioned
请根据短文的内容，回答题。
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.＜br＞
The computer mouse was invented in 1964 by Douglas Engle hart 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.＜br＞
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.＜br＞
So far we have only discussed the basic computer mouse that most of you probably have or have 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.
Most computer users want to know how the computer mouse works. 查看材料
A.Right
B.Wrong
C.Not mentioned
第二节 短文理解1
阅读下面短文，从[A](Right)、[B](Wrong)、[C](Doesn't Say)三个判断中选择一个正确选项。
Once there were two mice. They were friends. One mouse lived in the country; the other mouse lived in the city. After many years the Country mouse saw the City mouse; he said,“Do come and see me at my house in the country.”So the City mouse went. The City mouse said,“This food is not good, and your house is not good. Why do you live in a hole in the field？ You should come and live in the city. You would live in a nice house made of stone. You would have nice food to eat. You must come and see me at my house in the city.”
The Country mouse went to the house of the City mouse. It was a very good house. Nice food was set ready for them to eat. But just as they began to eat they heard a great noise. The City mouse cried,“Run! Run! The cat is coming!”They ran away quickly and hid.
After some time they came out. When they came out, the Country mouse said,“I do not like living in the city. I like living in my hole in the field. For it is nicer to be poor and happy, than to be rich and afraid.”
The two mice both lived in the country.
A．Right.
B．Wrong.
C．Doesn't say.
听力原文：W: Your glasses are fine. If you don't like the frames we could change them.
M: Actually I was thinking of trying some contact lenses, if you think that I would be able to wear them.
Q: Where does this conversation most likely take place？
(14)
A．In an art gallery.
B．In a chemical laboratory.
C．In an optical shop.
D．In a man's wear store.
"Well," the workman answered, "you remember the house we were repairing in Newbridge last week, don't you？ One of the things we had to do there was to put in some new electric wiring. Well, in one place we had to pass some wires through a pipe thirty feet long and about an inch across, which was built into solid stone and has four big bends in it. None of us could think how to do this until I had a good idea. I went to a shop and' bought two white mice, one of them male and the other female. Then I tied a thread to the body of the male mouse and put him into the pipe at one end, while Bill held the female mouse at the other end and pressed her to help her. I suppose he was a gentleman even though he was only a mouse. Anyway, as he ran through the pipe, he pulled the thread behind him. It was then quite easy for us to tie one end of the thread to the electric wires and pull them through the pipe."
The manager paid the bill for the white mice.
The manager wondered why ________.
A．the workman sent a bill to the company
B．the mice bought for the job were a male and a female
C．the workman had paid for the mice
D．mice were needed in repairing a house
