Computers can injure you. Most other injuries happen suddenly. For example, if you fall off a bike and break your arms, it happens very fast. But computer injuries happen slowly. You probably know how to ride a bike safely.
Your eyes
Never sit too close to a computer screen. Too much light can injure your eyes. Your eyes should be at least 50 centimetres from the screen. After some time, remember to look away from it. This gives your eyes a rest.
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.
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.
A.If you use a keyboard for a long time, follow these rules. |
B.When you use a computer, the window should be on your left or your right. |
C.Now learn to use a computer safely. |
D.Enjoy your computer, but use it safely. |
E.The top part of the screen should be in front of your eyes. |
With more and more cars on the road, the traffic jam will happen. How do we see it and how can we solve the problem?
We know that the traffic jam happens in many places, especially in big cities. What are reasons for the problem? On one hand, some people think that they should have a car when they have enough money, and then it’s easy to go out and they can feel comfortable. On the other hand, a growing number of people hope to use their cars to show off. What’s more, years of research has shown that one of other reasons for the traffic jam is the driving habit. For example, many young people enjoy driving very fast, so they can feel excited. At last, most of them hardly care about the speed rules.
Many governments are working at how to make the traffic better. In my opinion, firstly, the governments should educate those people who have cars or plan to buy cars. The governments must make them know that the traffic jam is very serious, and set up a much more perfect traffic system(体系) to solve the traffic pressure.
【小题1】The underlined word “jam” means ________ in Chinese.A.事故 | B.堵塞 | C.规则 | D.房间 |
A.there are not enough ways of transportation(交通方式) |
B.there are fewer speed rules |
C.there are more and more cars on the roads |
D.many governments are working at how to make the traffic better |
A.People have too much work | B.the driving habit |
C.Some people want to show off | D.Many young people enjoy driving very fast |
A.educate those people who are young | B.set up a much more perfect traffic system |
C.allow people to buy so many cars | D.hardly care about the speed rules |
A.reasons why people want to buy cars |
B.how drivers should drive |
C.the traffic jam, reasons for it and solutions |
D.many young people enjoy driving very fast, so they can feel excited |
Happiness is important in our life. It can make us active. Are you happy?
Be confident (自信的)
Every morning when you wake up and look at yourself in the mirror (镜子) , what will you do? If you want to be happy in the following hours, please say “You are the best!”to yourself. Don’t always think that you are worse than others.
Smile
When you have problems, what will you do?
Talk to others
Being alone isn’t always nice.
A.You can be the best in the world. |
B.All in all, it is not hard to be happy. |
C.Do you want to be happy every day? |
D.You should talk to your friends or your parents. |
E.Are you often unhappy because of the problems? |
It is breakfast time. You have been looking forward to eating a nice ripe banana ever since you woke up. Just when you reach for the delicious piece of fruit on your table, you see something that makes you much less hungry: a swarm of fruit flies!
Fruit flies are tiny insects that are attracted to ripe or rotting fruits and vegetables. The flies not only eat the fruit, they also lay their eggs there. A single fruit fly can lay up to 500 eggs on the surface of a piece of fruit. Within eight days, the fruit flies from these eggs are full adults and they can then lay their own eggs. As you can see, what might start out as a small fruit fly problem can become very large, very quickly. There is a chance fruit flies can carry germs onto your food and this is not very likely. Fruit flies are not likable, but they probably will not hurt you. Because they are such a nuisance, most people want to stay away from these unpleasant bugs as quickly as possible. Luckily, there is a completely safe way for you to do away with fruit flies in your house.
The first step is for you to remove all fruits or vegetables from your table. Store these items in the refrigerator or in sealed containers. Clean up everything. Empty the recycling bin. Wash any dirty dishes that are in your sink. Doing all of these things will stop new fruit flies from finding food or places to lay their eggs.
Next, make a trap to catch all of the remaining fruit flies in your house. First, put a few tablespoons of vinegar into a small bowl. Then, put a piece of very ripe or rotting fruit into the vinegar. Cover the bowl very tightly with a piece of plastic wrap(包裹膜) and pok (刺) a few tiny holes in the wrap with a fork. If all goes according to plan, the flies will enter the trap through the holes but will be unable to fly back out. You can either kill these flies or set them free outdoors.
Fruit flies can be a pest, but they do not have to make you crazy. With a little effort, you can get existing flies out of your house and prevent new ones from taking over your kitchen.
【小题1】The first paragraph is written mainly to _________.A.show the importance of having breakfast | B.advise people to eat banana on time |
C.tell an interesting experience | D.draw the readers’ attention to fruit flies |
A.die immediately after they lay their eggs | B.can grow into adults after 8 days |
C.are very harmful to human | D.lay eggs in the water |
A.causes trouble or problems | B.is very dangerous |
C.can grow very fast | D.is very small |
A.the clean room is perfect for fruit flies to live in |
B.fruit flies do not like vinegar naturally |
C.some people do not like killing insects |
D.some people do not mind having fruit flies in their house |
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