阅读短文，根据要求完成下面各小题。

3If the only sports you do are dancing your fingers across your keyboard, you could be in serious danger of more than just becoming fat!

Do you feel sleepy, like something is weighing down on your head? Do you feel forgetful? Do you sometimes feel uncomfortable up and down your neck and lower back, and you can’t explain why? Do you get sick often? It could be radiation（辐射） from your computer causing it. If you spend three hours or more a day in front of a computer, （and at this point, who doesn’t?） you are more easily harmed by these hazards（危害）.

4 We have got so used to using computers that we don’t often think of them as dangerous sources（来源） of harmful（有害的） radiation. A safe amount radiation is 25 V/m（Volts/meter）. Do you want to guess how much our personal computers give off?

★ Keyboard: 1000 V/m        ★Mouse: 450V/m         ★Monitor: 218 V/m 

★CPU: 170V/m                   ★Notebook computers: 2,500 V/m

Ways to Protect Yourself from Harmful Computer Radiation:

1. Decorate your desk with cactus（仙人掌） plants, they take in radiation.

2. Drink two to three cups of green tea a day and eat an orange daily. The vitamins in tea leaves and oranges protect us from radiation and keep our eyes healthy as well.

3. Use a screen filter（过滤器） for your monitor.

4. Avoid having metal objects nearby on your desk.

5. Put the back of the computer to the wall. Most of the radiation comes off the back.

6. Keep your monitor at least 50cm away from your face.

7. Keep your computer rooms ventilated（空气流通的）.

8. Eat healthily—especially fruits and vegetables.

9. Don’t fall asleep on your computer. Turn it off if you have to rest nearby.

10.The ways above are useful, why not have a try at once?

A．根据短文内容简要回答问题。

1. Which is safer, using a desk computer or a notebook computer?

__________________________________________________________________________

2. Which of the nine ways mentions diets?

__________________________________________________________________________

B．将短文中划线的句子译成汉语。

3.__________________________________________________________________________

4. _________________________________________________________________________

C． 请给短文选一个适当的英文标题。

5. Which is the best title of this passage? ___________

A．Harmful radiation                                                 B．Computer problems

C．Protect yourself from computers                         D．Computer radiation: a silent killer

　　Small cars may take the place of（代替）big cars in the future（将来）. There is ___(1)___ for only two people in such a car. If everyone ___(2)___ such a car, there will be less pollution（污染）___(3)___ the air. There will also be more space for ___(4)___ cars in cities, and the streets will be less crowded. The little cars will cost ___(5)___ less. Driving will be ___(6)___, too, as these little cars can go only 65 kilometres per hour. If big cars are still used along with the small ___(7)___, two sets of road will be ___(8)___ in the future. Some roads will be used ___(9)___ the big, fast cars, and ___(10)___ roads will be needed for the slower small ones.

Bicycles in China

Bicycles are very popular in China. In our country you can see bicycles almost everywhere. When you walk on the road, you will find a lot of people riding bicycles to school, shops and anywhere else. Therefore(因此), China is known as “the kingdom of bicycles”. In China, many families have one or two bicycles.

Compared(与……比) with cars, bicycles have many advantages. First, they are much cheaper than cars. Most Chinese can’t afford cars, but they can afford bicycles. Second, bicycles are small enough to park anywhere, while cars need a larger piece of land to park. What’s more, with lower speed, bicycles are safer than cars.

However, bicycles also bring some problems. Some riders don’t obey the traffic rules and some riders don’t think about others’ safety. So they ride too fast. During rush hours, too many bicycles may cause traffic jams. We still have a long way to go to solve the problem.

1.Where can you see bicycles in China?

2.“The kingdom of bicycles” here is saying ____.

3. Which of the following is NOT an advantage of bicycles?

4.What problems can bicycles bring?

5.What does the last sentence mean?