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You've just finished with middle school and you may start wondering, “What is high school like? Is high school a lot 32 middle school? Is it going to be hard to start out in a new place?"
Most high schools in America hold a freshman class 33 school actually starts. When you talk to people in the freshman class, you 34 that a lot of them are feeling just like you are, excited, maybe 35 afraid. Talking about a question of common interest with your classmates could start a new 36 .
The work in high school builds on what you 37 in middle school, and gives you more knowledge of many subjects. So you 38 feel that it's a bit more challenging. But these challenges can make you feel 39 . And there are many resources (资源）to use if you feel that the work is too much.
At the beginning of high school, you'll get to know it has more activities than middle school, such as clubs, music groups, and sports teams. These activities may 40 before or after school, or during your free time. 41 this, time management is an important skill in your 42 year.
Middle school teaches you the 43 of study and social skills while high school gives you the chance to learn 44 to be more independent (独立的).It's all right if you're nervous 45 . Just be patient and keep 46 . Once you've got used to your new independence, you can go farther than you ever imagined.
【小题1】A. the same as B. different from C. helpful to
【小题2】A. before B. after C. since
【小题3】 A. found B. will find C. have found
【小题4】 A. too B. so C. a little
【小题5】 A. hobby B. friendship C. topic
【小题6】A. are learning B. will learn C. have learned
【小题7】A. have to B. should C. may
【小题8】A. more bored B. less bored C. less excited
【小题9】A. take part B. take up C. take place
【小题10】A. Because of B. Thanks to C. Instead of
【小题11】A. first B. second C. third
【小题12】A. aims B. pleasure C. ways
【小题13】A. what B. how C. whether
【小题14】A. at first B. at last C. at that moment
【小题15】A. doing B. studying C. trying 查看习题详情和答案>>
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.
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
2.One of the signs of carbon monoxide poisoning is _____.
A. burning eyes B. bad cough
C. serious headache D. high fever
3.Which of the following is TRUE according to the passage?
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.
4.What does the passage mainly talk about?
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.
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