题文
阅读理解。 Carbon monoxide(一氧化碳) poisoning kills and injures many people and animals around theworld. The gas has been a problem since people first began burning fuels to cook food or to create
heat. It is a problem in all parts of the world that experience cold weather.
Carbon monoxide is called the silent killer because people do not know it is in the air. The gas
has no color. It has no taste. It has no smell. It does not cause burning eyes. And it does not cause
people to cough. But it is very deadly. It robs the body of its ability to use oxygen.
Carbon monoxide decreases the ability of the blood to carry oxygen to body tissues. 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 to the body can begin very quickly from large amounts of carbon monoxide. How
quickly this happens depends on the length of time a person is breathing the gas and the amount of
the gas he or she breathes in.
Carbon monoxide poisoning has warning signs. But people have to be awake to recognize them.
Small amounts of the gas will cause a person's head to hurt. He or she may begin to feel tired. The
person may feel sick. The room may appear to be turning around. The person may have trouble
thinking clearly. People develop severe head pain as the amount of gas continues to enter their blood.
They will begin to feel very tired and sleepy. They may have terrible stomach pains.
Medical experts say carbon monoxide affects people differently. For example, a small child will
experience health problems or die much quicker than an adult will. The general health of the person
or his or her age can also be important. An older adult with health problems may suffer the effects
of carbon monoxide more quickly than a younger person with no health problems. People with
heart disease may suffer chest pains. They may begin to have trouble breathing.1. Why is carbon monoxide called the silent killer?A. Because it tastes and smells good.
B. Because it is not easily noticed.
C. Because it kills and injures people.
D. Because it always harm people.2. How does carbon monoxide harm people?A. It makes people's blood unable to move.
B. It decreases the amount of blood in the body.
C. It makes body tissues full of blood.
D. It makes the blood less able to carry oxygen.3. When people breathe in small amounts of the gas, they may ________.A. feel a little dizzy
B. suffer a severe headache
C. go around in the room
D. have a terrible stomachache4. Which of the following about carbon monoxide poisoning is true?A. Adults are affected more seriously than children.
B. Young people are more severely affected than old people.
C. People in poor health may have more severe consequences.
D. People with heart problem only suffer from chest pains.5. The purpose of the passage is to ________.A. warn people not to burn fuels to keep warm in the winter
B. list the damages that carbon monoxide brings to people
C. give advice on how to avoid carbon monoxide poisoning
D. introduce some knowledge about carbon monoxide poisoning 题型：未知难度：其他题型
答案
1-5:BDACD解析
该题暂无解析
考点
据考高分专家说，试题“阅读理解。 Carb.....”主要考查你对 [健康环保类阅读 ]考点的理解。健康环保类阅读
健康环保累阅读概念：
健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。
健康环保类文章阅读技巧：
健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考，理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文，从结构上看大致可分为三个部分：
第一部分一般是文章的首段，主要用来提出文章的主题，即文章想要阐述、说明的主要内容；
第二部分是文章的主体，可由若干个段落组成，对文章的主题进行展开说明；
第三部分是结尾段，对文章的主题进行归纳总结。这类文章多用一般现在时，而且一般多使用客观性词语表述。有时为了强调客观性，也常使用被动语态。
从近几年的考试题来看，科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节，很多同学对此类文章感到费解。但一般的科普类文章都是就事论事，需要逻辑推理和想象的时候较少，因此此类阅读题也没有同学们想象中的那么难，只要多加训练，就能较好地答题。
【阅读策略】
1、概要(Summarizing)：
阅完材料后，将所阅材料浓缩，摘要，做出所阅材料的书面或口头梗概。
2、组织(Organization)：
阅读后根据阅读内容，识别观点、人物、事件之间的关系以及文章的结构关系。如：时间关系、比较或对比关系、相关关系及因果关系等。
