问题 多项选择题


以下提供若干个案例,每个案例下设若干个提问,请根据题干所提供的信息和提示信息,在每题下面备选答案中选出全部答案。

患者女性,47岁。头晕、乏力、面色苍白半年余。既往有十二指肠溃疡病史。查体:T 36.6℃,P 96次/分。贫血貌,皮肤干燥,黏膜无出血点,心肺(-),肝脾不大。实验室检查:RBC 2.8×1012/L,Hb 61g/L,Hct 0.21,RDW 20%。WBC 7.1×109/L,PLT 220×109/L。

如果对患者用铁剂治疗有效,则实验室检查可出现哪些变化

A.红细胞计数持续增加

B.网织红细胞计数增高

C.RDW可增大,红细胞直方图可出现双峰

D.血清铁含量下降为3.4μmol/L

E.血小板计数逐渐增多转铁蛋白饱和度增加可出现有核红细胞

答案

参考答案:A,B,C,F

解析: 当缺铁性贫血得到有效治疗后,由于体内缺乏的铁得到补充,血红蛋白合成增加,故会出现:网织红细胞计数增高,红细胞计数持续增加,转铁蛋白饱和度增加。由于新合成的正常红细胞和原来的小红细胞同时存在,RDW可增大,红细胞直方图可出现双峰。

单项选择题

Americans are often contrasted with the rest of the world in terms of material possessions. We are accused of being materialistic, gadget crazy. And, as a matter of fact, we have developed material things for some very interesting reasons. Lacking a fixed class system and having all extremely mobile population, Americans have become highly sensitive to how others make use of material possessions. We use everything from clothes to houses as a highly evolved and complex means of ascertaining each other’s status. Ours is a rapidly shifting system in which both styles and people move up or down. For example:

The Cadillac (卡迪拉克) ad men feel that not only is it natural but quite insightful of them to show a picture of a Cadillac and a well-turned out gentleman in his early fifties opening the door. The caption (标题) underneath reads, "You already know a great deal about this man. "

Following this same pattern, the head of a big union spends an excess of $100, 000 furnishing his office so that the president of United States Steel cannot look down on him. Good materials, large space, and the proper surroundings signify that the people who occupy the premises (建筑物及其周围所属土地) are solid citizens, that they are dependable and successful.

The French, English, and the Germans have entirely different ways of using their material possessions. What stands for the height of dependability and respectability with the English would be old-fashioned and backward to us. The Japanese take pride in often inexpensive but tasteful arrangements that are used to produce the proper emotional setting.

Middle East businessmen look for something else-family, connections, friendship. They do not use the furnishings of their office as part of their status system; nor do they expect to impress a client by these means or to fool a banker into lending more money than he should. They like good things, too, but feel that they, as persons, should be known and not judged solely by what the public sees.

One of the most common criticisms of American relations abroad, both commercial and governmental, is that we usually think in terms of material things. "Money talks," says the American, who goes on talking the language of money abroad, in the belief that money talks the same language all over the world. A common practice in the United States is to try to buy loyalty with high salaries. In foreign countries, this maneuver almost never works, for money and material possessions stand for something different there from they do in America.

It can be inferred from the third paragraph that ().

A. the president of United States Steel looks down upon his inferiors

B. the head of the big union is a corrupt leader

C. a director with a small and poor office is usually considered undependable

D. a good citizen does not use material things to show his status

单项选择题