题目内容
Carbon monoxide poisoning (一氧化碳中毒) causes death and injuries around the world. This gas is a problem in all parts of the world that experience cold weather. A few years ago, America’s Centers for Disease Control (C. D. C.) studied deaths linked (联系) with carbon monoxide poisoning. It found that the number of carbon monoxide deaths in the United States was greatest in January. The C.D.C. also found that carbon monoxide kills more than four hundred Americans each year. And, it said more than twenty thousand people are taken to hospital for treatment of health problems linked with the gas.
Carbon monoxide is called the silent killer because people do not know it is in the air. The gas has no color, no taste and no smell. It does not cause burning eyes. And it does not cause people to cough. Yet, carbon monoxide gas is very deadly (致命的). It steals the body’s ability to use oxygen.
Carbon monoxide makes it difficult for the blood to carry oxygen to body tissues (血管). It does this by linking with the blood. When the gas links with the blood, the blood is no longer able to carry oxygen to the tissues that need it. Damage (损害) to the body can begin very quickly from large amounts (数量) of carbon monoxide.
How quickly this can happen depend on how long a person is breathing the gas and how much gas he or she breathes in.
Carbon monoxide poisoning has warning signs(标志). But people have to be awake to realize them. Small amounts of the gas will cause a person’s head to hurt. He or she may begin to feel tired. Their stomachs may feel sick. The room may appear to be turning around. The person may have trouble thinking clearly.
People develop serious headache as the amount of the gas continues to enter their blood. They will begin to feel very tired and sleepy. They may have terrible stomachache.
Doctors say carbon monoxide influences people differently. For example a small child will experience health problems or die much sooner than an adult. The general health of the person or his or her age can also be important.
【小题1】The damage of carbon monoxide to the body has something to do with _____.
A.the amount a person breathes in |
B.whether a person is healthy |
C.how many signs a person finds |
D.ages of people |
A.burning eyes | B.bad cough |
C.serious headache | D.high fever |
A.Carbon monoxide poisoning seldom happens in cold areas. |
B.Twenty thousand Americans are killed by carbon monoxide each year. |
C.Most people know whether there is carbon monoxide in the air. |
D.Carbon monoxide stops the blood from carrying oxygen to body tissues. |
A.Warning signs that carbon monoxide poisoning has. |
B.Reasons why carbon monoxide can cause person’s death. |
C.The damage of carbon monoxide and how it works. |
D.Influences of carbon monoxide on children and adults. |
【小题1】A
【小题2】C
【小题3】D
【小题4】C
解析【小题1】根据文章内容Damage (损害) to the body can begin very quickly from large amounts (数量) of carbon monoxide.How quickly this can happen depend on how long a person is breathing the gas and how much gas he or she breathes in.可知答案为A
【小题2】根据文章内容可知答案为C
【小题3】根据文章内容答语可知答案为D
【小题4】根据文章内容大意可知答案为C
What will the weather be like? Some people say they can know what the weather will be like from birds. When they see birds fly high out to the sea , they know it is a nice day, because birds don’t like to fly out when it will rain. When the weather will be bad, the birds come back to the beach. A big wind may come with a rain. Birds do not like to fly in a big wind. They may sit in a tree when rain is coming. Other animals can also tell the weather. It’s a cloudy day. The rain is coming. Chickens aren’t quiet, and they are running here and there. Frogs(青蛙) are making big noise in the pool. If it is a nice day, the frogs will come out of the water.
A. 放 B. 落 C. 游 D. 飞
【小题1】We can play beach soccer when birds ________.
A.fly in the sky | B.come back |
C.play on the beach | D.B and C |
A.in the pool | B.out of the water |
C.making a big noise | D.swimming in the water |
A.Weather | B.Birds | C.Sea | D.Rain |
When you get tired of homework, several minutes’ walk in a nearby green park helps you relax at once. Or you may stand facing the lake or the sea. They’ll calm (not to be excited or nervous) you just like the green plants.
Wonder why? Color is a key part of the answers. Since it is so, green and blue help make people feel more quiet and safe.
All colors have special power. Scientists have found that many colors have specific effects (效果) on people’s minds and feelings.
Try an easy and interesting experiment and you’ll see how color “misleads” you sometimes. Wrap (包装) two boxes of the same size with colored paper, one red and the other white. Then weigh the two boxes with your hands. Which one is heavier? Most people will think that the red box is heavier, even though they weigh the same.
Colors can affect (影响) learning. Scientists have found that students spend more time reading if they read information written in blue text. Blue helps most people calm down and think more.
Smart (clever) uses of colors in daily life are to be seen everywhere. Hospital and libraries seldom (很少) paint their walls, tables and desks red. They use light colors, like light blue or green. Red makes people excited while light colors help them relax. Haven’t worked out how color affects your daily life? Start with your small room. Try to make some changes in it and you’ll get to know how important color is!
【小题1】The underlined word “misleads” means ______
A.affects |
B.effects |
C.causes someone to have a wrong idea |
D.give wrong directions |
A.light blue or light green |
B.deep red or deep brown |
C.deep orange or deep red |
D.light green or light yellow |
A.weigh something with your hands |
B.study attentively |
C.face the lake or the sea |
D.enjoy some rock music |
A.When you are going to have a rest, you’d better sit in the room painted green |
B.Scientists have known some differences among some colors |
C.When you get tired of homework, you should look at the green plants far away |
D.The passage has told us clearly why some colors are warm and other are cool |
A.the difference between red and white. |
B.how to get on well with others |
C.how to make smart uses of different colors in our daily life |
D.how to paint and decorate our rooms |
When does music in public places become noise pollution?
You may like at least some kind of music. But the problem is that, in lots of places, you’re made to hear somebody else’s choice in music. Say you’ve just landed at an airport. At the airport, the “background” (背景)music may be played loudly.
When you are on the way to your hotel, there may be another kind of music played by the taxi driver. Then you finally reach your hotel. But when you are taking the elevator(电梯),there is elevator music.
You go out to dinner and end up in a place where the owner of the restaurant thinks music will help make you eat more and spend more. Then a person playing the violin comes around. This is called the “music wallpaper”. It is to make you buy more and eat a lot. Even the government thinks this is “noise pollution,” especially when the music is too loud.
Noise pollution may be bad for our hearing. It’s also bad for some of our daily activities, such as sleeping, conversations and so on.
The fact that you can’t see, taste or smell it may help explain why it has not received as much attention as other kinds of pollution, such as air pollution or water pollution. The air around us is always filled with sounds, but most of us would not think we are surrounded(包围) by noise. This can be bad for our health. So many people like soft and quiet music in their house.
【小题1】In the restaurant, the music is to make you _____________.
A.have a nice meal |
B.eat more food and spend more money |
C.enjoy some wonderful music |
D.have a great time in the restaurant |
A.food pollution | B.water pollution |
C.air pollution | D.noise pollution |
A.it’s played at the airport |
B.it’s played by the taxi driver |
C.it’s played when you are taking the elevator |
D.you are made to hear someone else’s choice in music |
A.music that is too loud is bad for our health |
B.people pay as much attention to noise pollution as they do to air pollution |
C.people like loud music in their house |
D.most people think that there’s lots of noise around us |
阅读理解
| A | B | O | AB |
A | A,O | A,B,O,AB | A,O | A,B,AB |
B | A,B,O,AB | B,O | B,O | A,B,AB |
O | A,O | B,O | O | A,B |
AB | A,B,AB | A,B,AB | A,B | A,B,AB |
【小题1】If both parents are blood type O, then their children must be _________.
A.blood type A | B.blood type B | C.blood type AB | D.blood type O |
A.any blood type | B.blood type A and B |
C.blood type AB and O | D.blood type A,B and AB |
A.blood type A | B.blood type AB | C.blood type O | D.blood type B |
A.blood type A and B | B.blood type A and AB |
C.blood type B and AB | D.blood type AB and AB |
A.blood type A | B.blood type B | C.blood type AB | D.blood type O |
Soon computers and other machines will be able to remember you by looking at your eyes! The program works because everyone’s eyes are different. So in the future you won’t have to remember a number when you want to use a machine or take money out of a bank. You’ll just have to look at the machine and it will be able to tell who you are.
The eye-recognition(眼睛识别) program is already being tested in shops and banks in the USA, Britain and France. Soon, this technology(技术) will change all other ways of finding out who people are.
However, scientists are working on other systems. Machines will soon be able to know you from the shape of your face or hands or even your smell! We already have machines that can tell who you are from your voice or the mark made by your fingers.
Eye-recognition is better than other kinds because your eyes don’t change as you get older, or get dirty like hands or fingers. And even twins have different eyes, so the program can be up to 94% correct, depending on(依靠) how good the technology is. Some programs may only be right 51% of the time. In Britain, it was found that 91% of people who had tried it said that they liked the idea of eye-recognition.
In the future your computer will be looking at you in the eye. So smile!
【小题1】 How does the eye-recognition program work?
A.You type in your number. | B.You say your name. |
C.You look at the machine. | D.You show your ID card. |
A.Because eyes hardly change. |
B.Because the program is widely used around the world. |
C.Because people like the idea of the program. |
D.Because hands or fingers can get dirty. |
A.Remembering smells. |
B.Remembering eyes. |
C.Remembering fingerprints. |
D.Remembering the shape of faces. |
A.The program is being tested in Japan. |
B.Computers can remember you by looking at your clothes. |
C.91% of people in Britain don’t like the idea of the eye-recognition program. |
D.Machines with other systems will also tell who you are in the future. |