问题 单项选择题

属于潴留性囊肿的是

A.皮脂腺囊肿
B.皮样囊肿
C.胞裂囊肿
D.表皮样囊肿
E.甲状舌管囊肿

答案

参考答案:A

解析: 皮脂腺囊肿主要为由皮脂腺排泄管阻塞,皮脂腺囊状上皮被逐渐增多的内容物膨胀而形成的潴留性囊肿;皮样囊肿或表皮样囊肿为胚胎发育时期遗留于组织中的上皮细胞发展而形成的囊肿;甲状舌管囊肿在胚胎第6周时甲状舌管不消失,则残存上皮分泌物聚积可形成先天性甲状舌管囊肿。故答案为A。

填空题
阅读理解

阅读理解。

     It was a hot Sunday afternoon and the two of us were heading for the capital city. Suddenly my son

gave a shout of pain. He had somehow managed to tangle up (围绕) his small body in his seat belt. I

immediately pulled off the road.

     I could have tried to stop a car, but they were driving by so fast. At that moment, I would have cut

the belt if I had something to cut it with. Then I thought that I could retract (缩回) little further in order

that it might work. But if that failed, my son's little stomach would be squeezed even tighter.

     Just then a man appeared. He wore a white shirt and trousers that I'd seen on Costa Rican cowboys

and his clothes so dirty that I thought he might be a beggar or worse.

     Yet when the stranger reached us, he asked me if I needed help. I pointed to my son and he took a

look. He then bent down beside my son, tracing the path of the smooth seat belt with with his rough fingers. After a long moment, he asked my son to bend sideways and a little bit forward. He then put his hands

on the belt, controlled it in a way that I still don't understand now, and my son was free.

     I thanked him warmly. I also reached into my wallet and gave him a bill, although his calm face

suggested that he didn't care about a reward. He had found a new way to use his roping skills, particularly those he used when freeing animals. And I had experienced the kindness.

1. What happened to the author's son? 

A. He was unable to move in his seat belt.

B. He suddenly suffered from a stomachache.

C. He fell off his seat and hurt his stomach.

D. He saw something interesting on the journey.

2. From the passage, we know the cowboy __________.  

A. taught the author how to free her son      

B. was familiar with the author's son

C. refused to accept the money            

D. was good at roping.

3. What would be the best title for the passage? 

A. cowboy in Costa Rican.

B. A kind and quick roadside help.

C. A hard journey

D. A story of a cowboy