问题 单项选择题

慢性肺源性心脏病急性加重期的治疗最不适宜的是

A.控制感染

B.通畅呼吸道

C.早期强心利尿

D.持续低流量吸氧

E.纠正酸碱失衡

答案

参考答案:C

解析:题解:慢性肺源性心脏病患者在有效地控制感染,改善呼吸,合理氧疗,纠正呼吸衰竭,常能使心力衰竭得以纠正。经上述治疗无效或病情反复、严重心力衰竭者尚需用利尿剂、强心剂和血管扩张药。强心剂适用于感染已控制,呼吸衰竭已好转,利尿剂疗效差,心力衰竭不能纠正,或出现急性左心衰竭者,不宜早期应用。

阅读理解

阅读理解。

     Waste can be seen everywhere in the school. Some students ask for more food than they can eat and

others often forget to turnoff the lights when they leave the classroom. 

     They say they can afford these things. But I don't agree with them.

     Waste can bring a lot of problems. Although China is rich in some resources (资源), we are short of

(缺乏) others, for example, fresh water (淡水). It is reported that we will have no coal (煤) or oil to use

in 100 years. So if we go on wasting our resources, what can we use in the future and where can we

move? Think about it. I think we should say no to the students who waste things every day. Everybody

should stop wasting as soon as possible.

     In our everyday life, we can do many things to prevent waste from happening, for example, turn off

the water taps (水龙头) when we finish washing, turn off the lights when we leave the classroom, try

not to order more food than we need, and so on. Little by little, everything will be changed. Waste can

be stopped one day if we do our best.

1. From the passage we know that some students often ______ in the school. [ ]

A. eat too much

B. don't work hard

C. waste things

D. throw rubbish everywhere

2. Which is not mentioned in this passage? [ ]

A. Fresh water.

B. Forest.

C. Oil.

D. Coal.

3. What may happen in 100 years? [ ]

A. We may still have enough oil.

B. We may still have enough coal.

C. We may have a bottle oil.

D. We may have no coal or oil to use.

4. Which of the following is right? [ ]

A. Waste brings problems.

B. Waste can bring no problem.

C. China is rich in fresh water.

D. Students never waste things.

5. Which is the best title (题目) of this passage? [ ]

A. Stop wasting

B. School lift

C. Waste in the school

D. Rich Resources in China

单项选择题 B型题