问题 单项选择题 案例分析题

男,61岁,冠心病心肌病伴左心衰竭入院,应用洋地黄2周后出现频发多源性室性早搏。

患者在应用上述药物的基础上,仍有呼吸困难,故加用速尿治疗2周,呼吸困难好转,但病人无力,心电图短阵室速,首先考虑().

A.低钾血症

B.低蛋白血症

C.低钠血症

D.低氯血症

E.低钙血症

答案

参考答案:A

单项选择题
阅读理解

阅读理解。

     Modern inventions have speeded up people's loves amazingly. Motor-cars cover a hundred miles in little

more than an hour, aircraft cross the world inside a day, while computers operate at lightning speed. Indeed,

this love of speed seems never-ending. Every year motor-cars are produced which go even faster and each

new computer boats (吹嘘) of saving precious seconds in handling tasks.

     All this saves time, but at a price. When we lose or gain half a day in speeding across the world in an

airplane, our bodies tell us so. We get the uncomfortable feeling known as jet-lag; our bodies feel that they

have been left behind on another time zone. Again, spending too long at computers results in painful wrists

and fingers. Mobile phones also have their dangers, according to some scientist; too much use may transmit

harmful radiation into our brains, a consequence we do not like to think about.

     However, what do we do with the time we have saved? Certainly not relax, or so it seems. We are so

accustomed constant activity that we find it difficult to sit and do nothing or even just one thing at a time.

Perhaps the days are long gone when we might listen quietly to a story on the radio, letting imagination take

us into another world.

     There was a time when some people's lives were devoted simply to the cultivation of the land or the care

of cattle. No multi-tasking there; their lives went on at a much gentler pace, and in a familiar pattern. There

is much that we might envy about a way of life like this. Yet before we do so, we must think of the hard tasks

our ancestor faced: they farmed with bare hands, often lived close to hunger, and had to fashion tools from

wood and stone. Modern machinery has freed people from that primitive existence.

1. The new products become more and more time-saving because _____.

A. our love of speed seems never-ending

B. time is limited

C. the prices are increasingly high

D. the manufactures boast a lot

2. What does "the days" in Paragraph 3 refer to?

A. Imaginary life.

B. Simple life in the past.

C. Times of inventions.

D. Time for constant activity.

3. What is the author's attitude towards the modern technology?

A. Critical.

B. Objective.

C. Optimistic.

D. Negative.

4. What does the passage mainly discuss?

A. The present and past times.

B. Machinery and human beings.

C. Imaginations and inventions.

D. Modern technology and its influence.