较难首字母

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A

In the early days, using a computer was very hard because of its large size. Douglas

Engelbart, a researcher who worked in Silicon Valley, wanted to find a way to make using

computers e__(1)__. In 1963, he invented the first computer mouse.

Nowadays, a computer mouse is a standard p __(2)__ of a computer. It is used to tell a

computer what to do. It got its name because the wire coming out of the end of the first computer

mouse reminded people of the t__(3)__ of a real mouse. Many mice today are wireless and run on

batteries.

The user can move the mouse to move the cursor(指针)shown on the screen in the same

direction. If there is something on the screen that the user wants to c__(4)__, he can move the

cursor over it and click the l__(5)__ button of the mouse. The right button is used to open menus.

Most computer mice have only two or three buttons, but some have more buttons to do more work.

They also have a "scroll wheel" - a small wheel b__(6)__ the two main mouse buttons. The user

can move the wheel back or forth to "scroll" through things like a website or folder(文件夹),

which m__(7)__ moving it up or down on the screen.

1. ______ 2. ______ 3. ______ 4. ______ 5. ______ 6. ______ 7. ______

Key:1. easier 2. part 3. tail 4. choose 5. left 6. between 7. means

B

Dreams may be more important than sleep. Some people don't need much sleep. H__(1)__,

we all need to dream according to the scientists.

Dreams take up about one quarter of our sleeping time. People have several dreams

e__(2)__ night. Dreams are like short films. They are usually in color. Some dreams are l__(3)__

old films. They come to us over and again. That may be because the dreamer is worrying about

something.

Dreaming may be a w__(4)__ of trying to find an answer. Some people get new ideas about

their work from dreams. They could have been t__(5)__ about their work all day. Then these

things go into their dreams.

Sometimes we wake up with a good feeling from a dream. But often we can't remember the

dream. Dreams can d__(6)__ quickly from memory.

Too much dreaming isn't good. The m__(7)__ we sleep, the longer we dream. Our mind is hard at

work when we dream. That is why we may have a long sleep and still wake up tired.

1. ______ 2. ______ 3. ______ 4. ______ 5. ______ 6. ______ 7. ______

Key:1. However 2. every 3. like 4. way 5. thinking 6. disappear 7. more

C

Should children stop playing computer games or not? That's always a hot topic.

Computer games may h__(1)__ you learn how to use computers skillfully. And they are

more f__(2)__ than going to a computer class. You will learn all kinds of things through playing

games on your computer.

Games a __(3)__ get your brain(脑子)to work fast. When you play games, you have to

work out w__(4)__ to do in a very short time. Your brain, eyes and hands must work quickly. It

makes you free from schoolwork and helps you e__(5)__ yourself and relax.

But wait, you'd better not take that as an excuse and play computer games all day. If you sit

before your computer for a long time, your hands, back and eyes will get h__(6)__. Children

shoudn't use a computer for more than 30 minutes w__(7)__ a rest.

1. ______ 2. ______ 3. ______ 4. ______ 5. ______ 6. ______ 7. ______

Key:1. help 2. fun 3. also 4. what 5. enjoy 6. hurt 7. without

D

When the Chinese swimmer Liu Zige won the gold medal in the women's 200-meter butterfly

at the 2008 Beijing Olympics, many people said her success was just good l__(1)__. Now, Liu's

talent and effort has proved that she is no falling star in world swimming.

At the World Cup short-course meet in berlin on November 15, 2009, Liu broke her own

world record that had been set four days earlier in Stockholm, Sweden, in the women's 200-meter

butterfly. During the past month, she has won gold medals and b__(2)__ the world record three

times in this event.

Liu attributes her great success to her tough training. The 20-year-old girl says she hasn't

had a day off s__(3)__ she won the silver medal at Rome World Championships in July, 2009.

When she's not training, Liu keeps herself away from the noisy world outside. That's

w__(4)__ she never appears on front pages but wins top results in competions.

Unlike most players who struggle for victory, Liu doesn't care too m__(5)__ about setting

the world record. "Even tiny progress can make a new record, which is very common in the

pool," Liu sai."I believe hard work pays off."

Liu started swimming at the age of seven. A__(6)__ being trained at a sports school in