问题 单项选择题 A1/A2型题

男性,72岁,M型超声显示二尖瓣前叶曲线舒张期震颤、主动脉瓣活动曲线呈双线,提示诊断为()

A.二尖瓣关闭不全并主动脉瓣狭窄

B.二尖瓣狭窄

C.主动脉瓣关闭不全

D.主动脉瓣狭窄

E.二尖瓣狭窄并主动脉瓣关闭不全

答案

参考答案:C

解析:主动脉瓣关闭不全由于主动脉瓣增厚、钙化,不能合拢,M型超声显示主动脉瓣活动曲线呈双线;主动脉瓣反流血流冲击二尖瓣前叶,二尖瓣前瓣或前后瓣可有舒张期振颤运动。

阅读理解

阅读理解。

     Beep …beep … There went the bell! Robbie opened his eyes. He had been sitting in the room

for a whole day, and now it was time for him to do something.

     Robbie looked out of the window. It was still snowing heavily and there was ice on the window. It

was another cold day. Robbie was told to turn the heat on before the family got home. And he did it.

     Then Robbie was told to do some cleaning work at once. It was an easy job for him, but a tough

one for his master, Helen. He kept on working until every room was clean and tidy.

      For now, he had to cook supper for the family.

     The first thing Robbie did was to get the big pot(锅) in the kitchen. Then he put some water in the

pot and put it on the stove. He used one of his hands to cut up a chicken and added the pieces to the

water to make a good soup. Then he got some tomatoes, cabbages and carrots to make a vegetable

salad.

     At ten past eight he laid the table. Then he put some bread, the chicken soup and the salad on it.

What a sweet smell! The moment he turned on the lights, the whole family came home.

     "The soup smells great, Victor," said Helen. "You really know how to tell Robbie what to do."

Robbie is one robot that really saves the family a lot of work.

1. What is Robbie?

A. A cook.      

B. A robot        

C. A cleaner      

D. A computer

2. What do the underlined words "did it" in the second paragraph mean?

A. Looked out            

B. got home    

C. turned the heat on       

D. did some cleaning

3. What time did Robbie lay the table?

4. What can we learn from the passage?

A. The story happened on a rainy day.

B. Robbie didn't have to be told what to do.

C. Helen found it easy to do cleaning work at home.

D. Victor and Helen felt comfortable when they got home.

判断题