问题 单项选择题 A1/A2型题

在慢性肺心病的发生主要由于肺动脉高压所致,不属于引起肺动脉高压常见因素的是()

A.缺氧

B.肺血管解剖结构改变,CO2排出受阻潴留

C.血容量及血红蛋白含量增加

D.血液黏稠度增加

E.电解质紊乱

答案

参考答案:E

解析:肺动脉高压的主要原因为功能性肺血管阻力增加,主要由缺氧和(或)CO2潴留引起。长期缺氧可使得血管解剖结构发生改变。而血容量增加和缺氧导致的血红蛋白含量增加(血液黏稠度增加)使肺循环的负荷和阻力升高,从而加重肺动脉高压。电解质紊乱对于血管的功能影响较小,对于肺循环阻力的增加也影响不大。

阅读理解

“Your honor(法官大人)! Let me say a few words for myself.What they have told you is just not true.I was not trying to kill anyone, and it was hardly possible to try to kill three strong young men at the same time.I didn’t have anything to tell people that night and was quite alone.I didn’t know them and needn’t hate them.I was attacked by them, and I knocked one of them down, it’s true, but Iwas made to do it, or I might be killed by them.I did this not because I hated the white men as they said.I just had to do so.While I was beaten in the dark street by the three men, a policeman came, caught me and took me here.I know why I was beaten.I have just moved into a house next to these three white men.I have felt that I am not welcome and I have tried to be quiet.I think, as an American, I have the right to choose where to live.I am guilty.What makes me guilty is my color opposite to theirs and I can’t enjoy justice.Yes, I am not guilty.This is all I want to say.Thank you, your honor.”

1.What color was the speaker?

A.Black.        B.White.       C.Brown.       D.Yellow.

2.Why did he speak for himself?

A.He wanted to live in the house next to the whites.

B.He wanted to have the right to choose where to live.

C.He wanted to show he was not guilty.

D.He wanted to show he didn’t hate the whites.

3.The speaker was caught because ____.

A.the policeman wanted to save him

B.he was black and was fighting with the whites

C.he killed the three men in a dark street

D.he lived in a house next to the whites

4.What’s the right order of the story?

a.The speaker said something for himself.

b.The three men said something.

c.The speaker knocked down one of the three men.

d.The speaker was beaten by the three men.

e.He was caught by the policeman.

f.The speaker moved into a house near the whites.

A.a-b-f-d-c-e      B.b-a-f-c-d-e         C.f-d-c-e-b-a    D.f-c-d-e-a-b

多项选择题