问题 多项选择题

下列关于主动脉瓣狭窄的描述哪些是正确()

A.严重的狭窄是指瓣口面积<1.5cm2

B.主要病因是风湿

C.临床表现主要有心绞痛,充血性心功能衰竭,晕厥

D.可以导致向心性的心肌肥厚

E.主动脉瓣狭窄病人早期就有左房压的升高

答案

参考答案:C, D

阅读理解

阅读理解。

    Chris is not a traditional explorer (探险家) -- he usually works in an office for a large organization.

However, Chris' job can be just as exciting and dangerous as being an explorer.

    Chris works for MSF, an organization also known as.Doctors Without Borders. Since1971, MSF has

sent trained doctors all over the world to help people who have suffered from disasters (遭受灾难), such

as wars and illnesses. Chris is a doctor from France who has traveled to many places to organize programs

that help people.

    At the moment, over 27,000 trained doctors have taken part in MSF projects. The organization received

the Nobel Peace Prize in 1999. All kinds of doctors can volunteer for MSF. They need to be ready to go

almost anywhere in the world and, of course, they should face difficulties. Most of MSF's work is in Africa.

When MSF chooses a doctor for a task, they have to go for at least six months. When doctors have

completed a few tasks, they might be sent on an emergency (紧急的) task following a disaster, such as an

earthquake.

     But why would doctors leave a comfortable life and a good pay to join MSF? According to Chris, the

experience they have is a great help in their life. What's more, just like the explorers of the past, they need to

keep an open mind and learn to get on well with the people they meet. One thing that they can say at the end

of any task is that they have made a real difference to people's lives.

1. What may MSF's work be like?

A. Tiring and boring.

B. Exciting and dangerous.

C. Relaxing and colorful.

D. Peaceful and comfortable.

2. As a volunteer doctor for MSF, he or she should ______.

A. have worked in Africa for six months

B. have been sent on an emergency task

C. be ready to work for a task for at least half a year

D. have suffered from wars, illnesses or other disasters

3. Why would doctors like to join MSF?

A. Because they can get a good pay.

B. Because they can have a comfortable life.

C. Because they can help others and get experience.

D. Because they can travel abroad with their families.

4. What is the main idea of this passage?

A. Chris is a doctor who has organized programs to help people.

B. MSF received the Nobel Peace Prize for helping poor countries.

C. Volunteer doctors make a real difference to their own lives in MSF.

D. MSF offers medical help to people who have suffered from disasters.

多项选择题