问题 单项选择题

慢性肾病引起组织水肿的原因是()

A.毛细血管血压升高

B.血浆胶体渗透压降低

C.组织液胶体渗透压升高

D.组织液静水压降低

E.淋巴回流受阻

答案

参考答案:B

解析:

[考点] 组织液的生成与回流

[分析]: 组织液是血浆从毛细血管壁滤过形成的,液体通过毛细血管壁的滤过和重吸收取决于四方面因素的共同作用:毛细血管血压和组织液胶体渗透压是促使组织液生成的因素,组织液静水压和血浆胶体渗透压是促使重吸收(回流)的因素。当组织液的生成大于回流时可以发生水肿。右心衰竭引起组织水肿是毛细血管血压升高引起的,因为右心衰竭时,静脉血回流受阻,毛细血管血压升高,组织液生成增加导致组织水肿;慢性肾病引起组织水肿的原因是血浆蛋白减少(长期蛋白尿,血浆蛋白丧失),血浆胶体渗透压降低,从而引起组织液回流减少所致。

阅读理解

阅读理解。

     It was very difficult to find jobs in the northeast of England, and when John lost his job, he found it

impossible to get a new one. He had soon spent all his money, so he decided to go down to the south of

the country, where he had heard that things were better, and that it was easier to find work. The best way

to go was by train, so he went to the railway station and got in a train which was going to London. He

was the only passenger into his compartment (车厢) when another man with a gun (枪) in his hand said

to him, "Your money, or your life! "

     "I haven't got money," John answered.

     "Then why are you trembling (发抖)  so much?"  the man with the gun asked angrily.

     "Because I thought you were the ticket collector, and I haven't even got a ticket," answered John.

根据短文内容,选择正确答案。

1. John left the northeast of' England because              in the northeast than in the south.

A. it was colder

B. it was more difficult to find jobs

C. it was easier to find jobs

D. it was richer

2. John went to the south              .

A. to have his holidays

B. to see his friends

C. to see his children

D. to look for work

3. The man with a gun wanted John to             .

A. show his ticket

B. take out his money

C. die          

D. tremble

4. John was trembling because _           

A. he was afraid of the man's gun

B. he was afraid of being robbed (抢)

C. he thought the man was the ticket collector

D. he thought the man wanted his life

5. Which of the following statements is TRUE?

A. John had to take out his money.

B. John rang up the police station.

C. John was too poor to buy his ticket.

D. John gave his money to the man in order to save his life.

选择题