问题 单项选择题

肾炎性水肿发生的主要原因是

A.以双下肢水肿最常见
B.血浆胶体渗透压明显下降
C.血浆白蛋白明显降低
D.肾小球滤过率下降
E.全身性毛细血管通透性降低

答案

参考答案:D

解析:肾炎性水肿主要是由于肾小球滤过率下降,而肾小管的吸收功能基本正常造成“球一管失衡”和肾小球滤过分数下降,导致水钠潴留。

阅读理解

阅读理解。

     Mr. Turner likes fishing. It is his favorite sport. He often fishes for hours without catching anything.

But this does not worry him. Some fishermen couldn't catch fish. Sometimes they catch old boots or

rubbish ( 靴子或垃圾), Mr. Turner is even worse than the fishermen. He never catches anything-not

even old boots. After he spends the whole morning on the river, he always goes home with an empty

bag.

     "You must give up fishing!" his friend says, "It is a waste ( 浪费 )of time."

      "But they don't realize( 意识到 )one important thing. I'm not really interested in fishing. I am only

interested in sitting in a boat and doing nothing at all. It can make me forget the noise of the city and live

quietly for some time." he always says to himself.

1. Mr Turner always goes fishing because             . 

A. he could sell the fish and get some money

B. he thinks it is a good sport

C. he could cook the fish for supper

D .he could sit in a boat

2. Mr Turner 1ikes to fish .

A. by the river

B. in a boat on the river

C. in the river

D. with other fishermen

3. He always goes home with an empty bag because .

A. he couldn't fish at all

B. there are not any fish in the river

C. he gives the fish to others fishermen

D. he doesn't pay attention to fishing at all

4. His friend tells him when they know he couldn't catch anything.

A. to learn how to fish

B. to change the way fishing

C. not to fish any more

D. to buy some fish

5. From the story we know .

A. Mr. Turner lives in the country

B. Mr. Turner is a good fisherman

C. Mr. Turner is not good at fishing

D. Mr. Turner doesn't like the noise in the city

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