问题 单项选择题

下列关于类风湿因子的描述,正确的是()

A.是类风湿关节炎诊断的必备条件

B.是针对变性IgGFc端的自身抗体

C.只有类风湿关节炎病人才出现类风湿因子

D.是类风湿结节的一种表现

E.IgA的免疫复合物

答案

参考答案:B

阅读理解

阅读理解。

      Your body, which has close relations with the food you eat, is the most important thing you own, so

it needs proper treatment and proper nourishment (食物). The old saying "an apple a day keeps the

doctor away." is not as silly as some people think. The body needs fruit and vegetables because they

contain vitamins. Many people take extra vitamins in pill form (丸剂), believing that these will make them

healthy. But a good diet is made up of nutritive food and this gives all the vitamins you need. The body

doesn't need or use extra vitamins, so why they waste money on them?

     In the modern Western world, many people are too busy to bother about eating properly. They throw

anyt hing into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or made worse

by bad eating habits is frightening.

1. The old saying referred to in the passage tells us that        .

A. eating apples regularly does lots of good to our health.  

B. the apple is the best among all kinds of fruits  

C. apples can take the place of doctors

D. an apple is a sure cure for illness

2. In the second paragraph, the writer tries to let us know        .

A. our bodies need food, or we can't live  

B. often eating apples is a good habit  

C. taking extra vitamin pills is completely useless  

D. a good diet is of great importance for our health  

3. In the modern western countries        .

A. people won't want to pay more attention to their eating  

B. people throw everything into their stomachs without chewing.

C. list of people's illness are caused or made worse by bad eating habits

D. people are only too busy to cook meals for themselves  

4. From the passage we can draw a conclusion that if we want to keep healthy, we should        .

A. only eat an apple a day  

B. take as many vitamin pills as possible

C. eat properly    

D. throw something into our stomachs slowly and carefully.

单项选择题