Computers can injure you. Most other injuries happen suddenly. For example, if you fall off a bike and break your arms, it happens very quickly. But computer injuries slowly.
　 You probably know how to ride a bike safely. Now learn to use a computer safely.
Your eyes
　 Too much light can injure your eyes, so never sit too close to a computer screen. Your eyes should be at least 50 centimeters from the screen. Remember to look away from it sometimes. This gives your eyes a rest.
　 When you use a computer, the window should be on your left or your right. If it is behind you, the light will reflect on (反射) the screen. If the window is in front of you, the sun and the screen will both shine into your eyes.
Your hands and wrists (手腕)
　　Hand and wrist injuries can happen because the hands and wrists are moved in the same way hundreds of times. If you use a keyboard for a long time, follow these three rules: 1) Rest your wrists on something. 2) Keep your elbows (肘部） at the same height as the keyboard. 3) Stop something and exercise your hands, wrists and fingers in a different way.
Your back
　　Some people sit for many hours in front of a computer. If you sit in the wrong way, you can injure your back or your neck. So you should sit with your back straight. The top part of the screen should all be in front of your eyes. Your forearms（前臂）, wrists, hands and the upper（上部） part of your legs should all be parallel (平行) to the floor. If you are sitting for a long time, get up every 30 minutes and exercise your arms, legs and necks.
　 Enjoy your computer, but use it safely.
【小题1】A computer screen may injure your eyes if __________.

A．you sit 60 centimeters away

B．you remember to look away

C．your eyes are too close to it

D．the window is on your left or your right

【小题2】Hand and wrist injuries are caused when you _________.

A．get plenty of exercise

B．move in the same way again and again

C．rest your wrists on something

D．keep your elbows as high as the keyboard

【小题3】Your eyes and hands will be safe if __________.

A．you work near a window

B．you often take a rest from working

C．you use a keyboard for a long time

D．the window is behind you

【小题4】It is good for your back and neck if you sit __________.

A．in the right way

B．for many hours

C．with the screen below your eyes

D．with your back leaning forward

【小题5】What would be the best title for the passage?

A．How to protect your eyes

B．How to protect your hands and wrists

C．How to use a computer safely

D．How to protect your back

Asking for information or help is a very common and necessary activity, especially when we visit a foreign country. So knowing how to ask for information politely is important. In English, "Where are the restrooms?" and "Could you please tell me where the restrooms are?" are similar requests—both are correct English, but the first could sound rude. It's important to use correct language, but sometimes this alone is not enough—we need to learn how to be polite when we make requests.

In English, just like in Chinese, we change the way we speak when talking with different people. The expressions you use might depend on whom you are speaking to or how well you know them. If you say to your teacher, "Where is my book?" this will sound rude. But if you say, "Excuse me, Mr West. Do you know where my book is?" your question will sound much more polite. On the other hand, it might be alright to say "Where is my book?" in some situations, perhaps with people you know well.

And you would not usually say, "Peter, lend me your pen. " A very direct order like this can sound rude in English. Usually in English polite questions are longer and include extra language, such as "Could you please...?" or "Can I ask...?" It sounds more polite to say, "Peter, could you please lend me your pen?" Sometimes we might even need to spend some time leading in to a question or request. For example, if you stop a stranger in the street, we might first say, "Excuse me. I wonder if you can help me. " or "I'm sorry to trouble you but," before asking them for help.

It might seem that speaking politely is more difficult than being direct, and in a way this may be true. However, in order not to offend people, learning about the language etiquette is just as important as learning grammar or vocabulary. And doing this will also help you become better at English, or any other language you wish to speak.

1. It's important to know how to_     _in English when we visit a foreign country.

2. When you talk with different people, you need to__       _.

3. Extra words are used to help__      ___.

4.._      _is as important as learning language structure.

5. How do you say " Don't smoke here. " politely? "_         __*

 

The Internet joins millions of computers all over the world, and it’s used by people all over the world. It was invented in the 1960s in the USA. The American government needed a network of computers for its army. Then in the 1970s scientists and businesspeople also wanted to use the Internet to send and receive messages. For some years, they weren’t allowed to use US network, and when they were allowed to, the messages were in very simple text without photos.

The World Wide Web was invented by a British scientist named Tim Berners-Lee in 1989. He wanted to send documents to other scientists. So he developed the World Wide Web. This allowed him to send and receive scientific documents with text, drawings and photos. In the 1990s, more and more people began to use the Internet and the World Wide Web.

So, what’s the difference between Internet and the World Wide Web? The Internet is the hardware .It allows us to communicate with other people. The World Wide Web is the software. It allows us to create , see, and read multimedia documents.

The web is made up of millions of documents called web pages. These pages are held in computers all over the world. Many people have a favourite website with a number of web pages on the same subject.

Email is a way of using your computer to send and receive messages. It’s cheaper and quicker to use email than send normal mail. New users call normal mail “snail mail” because it’s so slow.

It took 50 years for 100 million people to listen to the radio. It took 15 years for 100 million people to watch television. By the year 2000, it had taken only about three years for 100 million people to use the Internet. What will happen next on the Internet?

1.When was the Internet invented?

A．In the 1970s

B．In the 1960s

C．In the 1990s

D．In 1989

2.Who made the Internet easier to use?

A．Businesspeople	B．The American government
C．A British scientist	D．American Scientists

3.Why is email better than snail mail?

A．Because email was invented early.

B．Because email came from America.

C．Because email is cheaper and quicker.

D．Because email is fashionable.

4.According to the passage, which of the following is not true.

A．Tim Berners-Lee developed the World Wide Web.

B．At first, the message were in very simple text without photos.

C．Web pages are held in computers all over the world.

D．The World Wide Web allows us to communicate with other people.

5.What’s the best title of the passage?

A．The history of the Internet

B．The World’s greatest invention

C．The World Wide Web

D．The future of the Internet

 

Mr．Jenkins liked all kinds of delicious foods．As an important officer，he was often asked to dinner．The shopkeepers tried their best to fawn on(巴结)him．They knew it was good for their business．Now the officer got fatter and fatter．He could hardly go upstairs at home and had to sleep downstairs． He often felt tired if he walked or did some housework. He was  worried about it and had to go to see a doctor．“Stop eating much fat(脂肪)and sugar，Mr Jenkins，”said  the doctor .Or it will be worse for your health! It was difficult for the officer to do it. He wouldn’t do as the doctor said. Of course． He found something was wrong with his heart a few months later． Now he thought the doctor was fight．And he had to be in hospital．“You must lose weight(减肥)，sir，” said the doctor．“unless you want to die soon!”“Could you tell me a way to lose weight,please?”“You must do an exercise first．”“Which  exercise?”“To move your head from side to side when you’re invited to dinner!”
【小题1】Mr．Jenkins wag often asked to dinner because       ．

A．he liked the delicious foods	B．he was ready to help others
C．he was friendly to the shopkeepers	D．he was helpful to their business

【小题2】It was difficult for Mr．Jenkins to do everything．so      ．

A．he didn’t go to dinner	B．he began to do some exercise
C．he went to ask the doctor for help	D．he had to take much medicine

【小题3】Mr．Jenkins wag afraid       , so he went to the doctor again．

A．to die

B．to be thin

C．to stop working

D．to do housework

【小题4】Which of the following is true according to the passage?

A．The doctor told Mr．Jenkins to do some exercise．

B．The doctor told Mr．Jenkins to move his head．

C．The doctor told Mr．Jenkins not to go to dinner．

D．The doctor thought Mr．Jenkins would die．

It was the last day of final examinations at a large college. On the steps of one building, a group of engineering students were discussing the exam that was ahout to begin. On their faces was confidence. This was their last exam before they graduated(毕业)and found jobs.
Some talked of jobs they already had，others of jobs they would get. With four years of college study，they felt ready and able to conquer(征服)the world.
The coming exam，they knew，would be easy. The professor(教授)had said they could bring any books or notes they wanted，but they couldn’t talk to each other during the test.
They walked into the classroom. The professor passed out the papers. The students’ smiles became wide as they saw that there were only five essay-type questions.
Three hours passed and the exam came to an end. Then the professor began to collect the papers. The students no longer looked confident. They seemed worried. No one spoke as the professor faced the class with the papers in her hand.
She looked at all the worried faces in front of her, and then asked，“How many students completed all five questions?”
Not a hand was put up.
‘‘How many of you answered four?” Still no hands.
“Three?Two?”The students moved restlessly in their seats.
“One，then. Certainly somebody finished one．”But the class stayed silent. The professor put down the papers.“That is just what I expected，”she said.
“I just wanted to make sure you realize that even though you have studied engineering for four years, there are still many things about the subject you don’t know. Instead of testing you on what you learned in this class, I’ve given you questions that skilled engineers face in the world outside the classroom. You can’t expect to be an expert(专家)on the day you graduate. You have to learn as you go.”
Then，smiling, she added，“You will all pass this course, but remember that your education has just begun.’’
【小题1】What does the underlined word“restlessly”mean in the passage?

A．confidentIy

B．proudly

C．excitedly

D．nervously

【小题2】Why did the professor design the final exam in such a way?

A．To make the students realize that they still had much to learn after graduation.

B．To find out whether the students could put what they had learned into practice.

C．To show that she had much more knowledge than her students in engineering.

D．To examine whether the students learned what they had been taught in her class.

【小题3】What can be the best title of the passage?

A．A Playful Joke	B．A Lucky Chance
C．A Strange Professor	D．A Special Exam