问题 单项选择题

患者,女性,39岁,突然头痛、心悸、呕吐、视力模糊就诊,血压:160/120mmHg。超声特征:右肾上腺区可见一直径3cm大小边界清楚的低回声实性肿块。本病最有可能的诊断为()。

A.肾上腺神经母细胞瘤

B.肾上腺皮质腺瘤

C.肾上腺嗜铬细胞瘤

D.肾上腺血肿

E.肾上腺结核

答案

参考答案:C

解析:嗜铬细胞瘤的临床表现主要是由于儿茶酚胺分泌增多,大量儿茶酚胺作用于肾上腺素能受体引起。因此高血压为本病的主要症状。由于肿瘤间歇或持续分泌儿茶酚胺,故高血压表现为阵发性或持续性。肿瘤一般多呈圆形或椭圆形,边界清楚,直径一般在3~5cm,内部为均匀的中等或弱回声。本例患者的超声图像特征结合患者有高血压和头痛、呕吐病史,答案应该选择C。

阅读理解

Will it matter if you don't take your breakfast? Recently a test was given in the United States. Those tested included people of different ages, from 12 to 83. During the experi­ment, these people were given all kinds of breakfasts, and sometimes they got no breakfast at all. Special tests were set up to see how well their bodies worked when they had eaten a certain kind of breakfast. The results show that if a person eats a proper breakfast, he or she will work with better effect than if he or she has no breakfast. This fact appears to be especially true if a person works with his brains. If a student eats fruit, eggs, bread and milk before going to school, he will learn more quickly and listen with more attention to class.

Opposite to(与.....相反) what many people believe, if you don't eat breakfast, you will not lose weight. This is because people become so hungry at noon that they eat too much for lunch, and end up gaining weight instead of losing. You will probably lose more weight if you reduce your other meals.

小题1:During the test, those who were tested were given ________.

A.no breakfast at all

B.very rich breakfast

C.little food for breakfast

D.different breakfast or none小题2:The results of the test show that ________.

A.breakfast has great effect on work and studies

B.breakfast has little to do with a person’s work

C.a person will work better if he has a simple(简单的) breakfast

D.those working with brains needn’t have anything for breakfast小题3:The passage mentions that many people believe that if you don't eat breakfast, you will _________.

A.lose weight

B.not lose weight

C.be healthier

D.gain a lot of weight小题4:Which of the following is not true according to the passage?

A.Poor breakfasts affect those who work with brains.

B.Eating nothing in the morning may cause one to get fatter.

C.Reducing lunch and supper is of less use in weight losing.

D.Eating less in lunch and supper may help to lose weight.

单项选择题