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 _____.

I like to get up late, so my ideal school starts at 9 a.m. It finished at 3 P.m., so we will have lots of time for after-school activities. There is a big dining hall.

We have an hour for lunch. We eat lunch and chat there. We can also listen to pop music in the hall. We eat fruit and vegetables every day.

We have Maths every day because I think Maths is very interesting to us. I love computers, so we have Computer Studies every day. We wear school uniforms, but we do not wear ties. The classes are quite small. There are 15 students in each class.

There is a park on one side of our school and a shopping mall on the other. We have a big library with lots of useful books. We also have a tennis court and a swimming pool.

There are lots of clubs and after-school activities. We only have half an hour of homework every day, and we do not do homework at weekends. Every month, we go on a school trip to a museum or a theater.

36. How many hours for lessons are there in my school?

A. Five hours.　 　　　　　　 B. Six hours.　　 C. Four hours.　　　　　　　　　　 D. Three hours.

37. How many hours for lunch are there in my school?

　 A. Half an hours.　　　　 B. One hours. 　　C. One and a half hours. 　 D. Two hours.

38. Why do we have Maths every day?

A. Because it is useful.　　　　　　　　　　　 B. Because it is the main subject.　

C. Because we’re interested in it.　　 D. Because I’m going to be a Maths teacher.

39. How many students are there in my class?

　 A. Ten.　　　　　　　　　B. Sixteen.　　　　　 C. Fourteen.　 　　　　　　　　　 D. Fifteen.

40. The underlined word “with” means_______.　

A. 用　 　　　　　　　　　　 B. 在……下　 C. 和……一起　　　　　　　　　 D. 有

41. How often do we go on a school trip to a museum or a theater?

A. Every week.　　　 B. Every day.　 C. Every month.　　　　　　　　 D. Every two months.

42. What’s the best title for the passage?

A. My school.　 　　　　　　　　　　　　　　　 B. My ideal subject.　

C. My ideal school.　 　　　　　　　　　　　　 D. My ideal park.

完形填空
The telephone rings and Sue answers it. “  1  I speak to Mrs Potts, please?” a man asks.
“I’m afraid you’ve got the wrong  2 ,” Sue says.
“I’m sorry,” the man says.
A few minutes later the telephone rings  3 . Sue  4  it. It is the same man. He makes a mistake again. Three minutes   5  the telephone rings once more, but she   6  answer it this time, It rings and rings. Her mother hears the  7 . “Why   8  you answer the phone, Sue? she calls.
“Oh, all right,” Sue says. “I’m sure it’s that man again.” But she is   9 . It is her father and he is very   10  . Sue keeps him waiting.