问题 单项选择题 A1型题

尿液检查下列哪项对慢性肾功能不全的诊断最有价值()。

A.蛋白量

B.红细胞数

C.白细胞数

D.比重固定于1.010

E.颗粒管型

答案

参考答案:D

解析:【考点】慢性肾功能不全的诊断。肾脏通过浓缩稀释功能来调节机体水的平衡,缺水则少排尿(浓缩尿)保留水分,水过多即多排尿(稀释尿)以防水肿。尿比重固定在1.010,提示肾失去浓缩稀释功能,保持着原尿(去蛋白后的血浆)的比重值。因此这是一项肾功能衰竭的很好指标。尿中红白细胞多少一般可提示其疾病性质与严重程度,如白细胞多,示感染性炎症重,红细胞多常为肾炎活动性高,但均不能提示肾功能情况。蛋白尿多少与导致通透性增加的机制有关。电荷屏障异常有蛋白尿,但常是可逆性,机械屏障改变而尿蛋白可不多,但常是持续难以恢复的。有的肾脏病可缺血,肾脏病可无蛋白尿,但肾功能可以处于尿毒症状态。颗粒管型是尿蛋白量大、酸性环境等因素导致在肾小管沉积,故尿中蛋白量多少及管型均不代表肾功能损伤程度。

单项选择题
阅读理解

From the beginning of human history, wild animals provided food, clothing and sometimes medicine. We may not depend as much on wild animals now. But we hear about them every day. Americans use the names of animals in many ways. Automobile manufacturers(制造商) and gasoline companies especially like to use big cats to sell their products. They like lions, tigers and wildcats. When Americans say wildcat, they usually mean a lynx, an ocelot or a bobcat. All these cats attack quickly and fiercely. So wildcats represent something fast and fierce.

An early American use of the word wildcat was quite different. It was used to describe members of Congress(国会) who declared war on Britain in 1812. A magazine of that year said the wildcat congressmen went home. It said they were unable to face the responsibility of having involved their country in an unnecessary war.

Wildcat also has been used as a name for money in the 1800s. At that time, some states permitted banks to make their own money. One bank in the state of Michigan offered paper money with a picture of a wildcat on it. Some banks, however, did not have enough gold to support all the paper money they offered. So the money had little or no value. It was called a wildcat bill or a wildcat bank note. The banks who offered this money were called wildcat banks. A newspaper of the time said those were the days of wildcat money. It said a man might be rich in the morning and poor by night.

Wildcat then was also used for an oil well or gold mine that had almost no oil or gold in it. Dishonest developers would buy such property. Then they would sell it and leave town with the money. The buyers were left with worthless holes in the ground. Today, wildcat oil wells are in areas that are not known to have oil.

小题1: What is the main idea of the passage?

A.Wildcats and their stories.

B.Wildcats and their characters

C.Varieties of animal species.

D.Relationship between animal and humans.小题2:From the passage we can know that______.

A.wildcats represent the state of Michigan

B.the use of wildcat was not always the same

C.wildcats are the best friend of human beings

D.honest developers never buy wildcat oil wells小题3: The underlines words “a lynx, an ocelot or a bobcat” in Paragraph 1 may refer to “      ”.

A. gasoline companies                    B. automobile manufacturers

C. names of wildcats                     D. brands of automobile

64. Which of the following would people like to have or trust according to the passage?

A. Wildcat congressmen.                  B. Wildcat oil wells.

C. Wildcat banks.                        D. Wildcat cars.

小题4: It can be inferred that during the days of wildcat money_________.

A.people couldn’t buy anything with the money

B.people didn’t know how to save money.

C.the rich invested too much on oil wells.

D.people complained and suffered a lot