问题 单项选择题

男性,45岁,持续性黄疸伴皮肤瘙痒个月余,近来加重。超声见肝内外胆管及胆囊均扩张,扩张的胆总管下端呈截断阻塞,局部隐约见一实性结节。主胰管扩张,内径0.5 cm。可能的阻塞病因是

A.壶腹周围癌

B.胆总管结石

C.硬化性胆管炎

D.胆总管囊肿

E.非特性胆管炎症

答案

参考答案:A

解析:患者进行性黄疽,肝内外胆管及胆囊均扩张,扩张的胆总管下端呈截断阻塞,局部隐约见一实性结节主胰管扩张,确切的阻塞部位应是胆总管下段壶腹周围癌。

阅读理解

When the world was very young, people lived in hot places .They didn’t live in cold places because they could not keep warm there.

At first men didn’t know how to make a fire. Sometimes trees were hit by lightning .Then a fire was started .People took some of the fire near their homes. A fire was very important for three reasons. It kept them warm. Wild animals were frightened when they saw it. And when food was cooked, it tasted much better.

But men didn’t know how to make a fire. When they had a fire, they didn’t let it stop burning. If it went out, they couldn't start it again. They had to wait for lightning to start another fire. Sometimes they had to wait for years.

Later, they learned how to make a fire. But it was not easy to make something burn . Now we have matches. We can carry them in our pockets and make a fire when we want to.

小题1:Millions of years ago people didn’t live in cold places because________.

A.they were afraid of cold

B.they didn’t know how to keep warm

C.they couldn’t make a fire

D.they couldn’t find cold places小题2:People found that _______.

A.wild animals enjoyed fire very much

B.the cooked food tasted better than uncooked food

C.the uncooked food tasted much better

D.wild animals needed fire to keep them warm小题3:Now we can make a fire___________.

A.in cold places

B.in our pockets

C.if it is necessary

D.in the forest小题4:Which of the following is NOT true according to the passage.

A.People are much cleverer now than they were long before.

B.A fire could be made by lightning.

C.We can make a fire with matches

D.After man knew how to make a fire, it became very easy to burn something .

单项选择题