问题 单项选择题

硝酸甘油为临床常用抗心绞痛药物,常与β受体阻断剂合用,其重要理由为()

A.二者均可使心率减慢

B.在心室压力改变方面可相互拮抗

C.二者均可使心室容积减小

D.二者均可使心肌收缩减弱

E.二者均可使心肌耗氧量下降有协同作用

答案

参考答案:E

解析:硝酸甘油扩张冠脉降低容量负荷,降低心肌耗氧,但增加心率与β受体阻滞剂合用,有协同作用使心肌耗氧量下降。

选择题
阅读理解

阅读表达(共5小题;每小题3分,满分15分)

阅读下面短文并回答问题,然后将答案写到答题卡相应的位置上(请注意问题后的词数要求)。

If you are worried about things and are under a lot of stress at work or school, then you are probably not sleeping well. Worry can keep you awake, and turning in bed until the early hours of the morning when you eventually fall asleep. When you wake up, you don’t feel refreshed, but tired and worn out and unable to face a new day.

Dr. Henry Winkle, in a recent newspaper article entitled StressandSleep, indicates that stress / worry and (lack of ) sleep are directly related. Dr. Winkle says, “The more we worry, the less we sleep, the more we are unable to deal with stress. If we can find a way to get a good night’s sleep,” he adds, “we can often find the energy to deal with what’s worrying us.”

So, what is a good night’s sleep? Research shows that the amount of sleep which people need in order to keep healthy varies a lot. Seven hours is about the average amount, though strangely enough, sleeping longer often gives you a headache instead of making you feel more refreshed.

Dr. Winkle believes that preparing for sleeping is important. People who work late should try to give themselves a short break and do something restful before going to bed. This could be watching TV or listening to music. Doing some exercise earlier in the day should help you to feel physically as well as mentally tired. A bedtime drink can also help, but coffee or tea should be avoided as they contain caffeine and will keep you awake. “When you put the light out,” Dr. Winkle says, “concentrate on relaxing your muscles, working slowly up from your feet, and you’ll be asleep before you know it.”

小题1:What is the best title of the passage?  (No more than 10 words)

小题2:What does the underlined word “indicates” in the second paragraph mean?(1 word)

小题3:What’s the relationship between stress and sleep according to Dr. Henry Winkle? (No more than 20 words)

小题4:Someone says that the longer you sleep, the better you feel. Try to find some arguments from the passage against the idea. (No more than 30 words)

小题5:Doing what things can help us fall asleep quickly? (No more than 10 words)