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.
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
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
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
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
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
The
16th Asian Games was held from November 12th to 27th in
2010 in Guangzhou, China. There were 41 events in the Games.
China got 199 gold medals and reached the total medals of 416. Guangzhou was the second Chinese city to host the Asian Games. In 1990 Beijing held the 11th Asian Games.
Premier
Wen Jiabao went to Shanxi province on April 2nd , 2011. He made a
three-day visit to impoverished(穷困的) Luliang.
During his visit, he said that farmers’ right（权利）must be protected and he warned(警告) that no land should ever be taken against a farmer’s will(意愿).
The
Beijing-Shanghai High Speed Railway will be put into operation at the end of
June, 2011. The journey takes about five hours. The train can reach speeds of
up to 380 kilometers an hour. The passenger volume (容量) is expected to reach 160 million a year, marking(标志) a great step in China’s
Railway development.
1.The 16th Asian Games was held in __________.
A．Guangzhou B．Shanghai C．Beijing D．Tokyo
2.How many gold medals did China get in the 16th Asian Games ?
A．11. B．41. C．199. D．416.
3.________ went to Shanxi province on April 2nd , 2011.
A．A farmer B．Our premier C．A worker D．A passenger
4.Premier Wen Jiabao said that_________ right must be protected.
A．officials’ B．women’s C．students’ D．farmers’
5.The Beijing-Shanghai High Speed Railway will be put into operation at the end of _______, 2011.
A．June B．July C．August D．September
People use money to buy food, books and hundreds of other things they need. When they work, they usually get paid in money.
Most of the money used today is made of metal or paper. But in the time long ago, people used to use all kinds of things as money. One of the first kinds of money was shells.
In China, cloth and knives were used as money. Elephant tusks(牙), monkey tail and salt were used in some parts of the world. Rice was also a kind of money used by the people in some islands. Some animals were used as money, too.
The first copper coins were made in China. They were round and had a square hole in the center. Different countries have used different metals for their money. Later, some countries began to make coins of gold and silver(银). But gold and silver were heavy to carry when people needed a lot of coins to buy something expensive. The Chinese were the
first to use paper money. The first paper money looked more like a note from one person to another than the paper money used today.
Money has had an interesting story from the days of shell money till today.
1.People usually use money ．
A．to buy gold
B．to get something they want
C．to buy shells
D．to buy something expensive
2.Long, long ago people all over the world used as money.
A．the same metal
B．the same paper
C．the different metals
D．all kinds of things
3.In the past, the ancient Chinese used to have cloth and knives .
A．as a tool
B．as money
C．as a gift
D．as a kind of goods
4. was also a kind of money used by the people in some islands.
A．Gold
B．Animals
C．Rice
D．Knives
5.The first paper money .
A．looked like the same as the paper money used today
B．1ooked interesting
C．1ooked like a note
D．had a square hole in the center
Tomorrow is Saturday. It is Linda, my 1 birthday. She will 2 seven years old. She is very happy because she 3 to school in autumn. We are all very 4 , too. We are going to 5 a party for her. My mother will make her a big _6 __. She likes reading ,my father will buy her an interesting 7 _. I will buy a CD _8 her ,9 she likes singing. She is going to 10 her favorite songs for us. We all hope she can be happy forever (永远).
1. A．father’s B．mother’s C．sister’s D．brother’s
2. A．be B．is C．are D．/
3. A．going B．go C．goes D．will go
4. A．sad B．nice C．happy D．cool
5. A．give B．have C．make D．use
6. A．photo B．plan C．cake D．picture
7. A．science B．storybook C．computer D．bike
8. A．to B．of C．from D．for
9. A．because B．but C．and D．or
10. A．write B．sing C．show D．give
Because there weren’t many books, people learned to read.
A． fewer B． few C． less D．little
If you have any problem, you can _________me for help. Which is wrong?
A．come to B．ask C．turn around D．turn to
