问题 单项选择题

女性,47岁,上消化道出血致失血性休克,接受补液治疗后血压.80/50mmHg,中心静脉压10cmH2O。于10分钟内静脉输入 250ml等渗盐水后,血压100/65mmHg,中心静脉压10cmH2O,提示

A.外周血管张力偏低
B.血容量不足
C.充血性心力衰竭
D.血容量过多
E.血管张力过高

答案

参考答案:B

解析:输液后血压升高,CVP不变提示血容量不足。

选择题
阅读理解

As you grow older, you’ll be faced with some challenging decisions—like whether to cut class or try cigarettes.Making decisions on your own is hard enough, but when other people get involved and try to pressure you one way or another it can be even harder.People who are your age, like your classmates, are called peers.When they try to influence how you act, to get you to do something, it’s called peer pressure.

Peers can have a positive influence on each other.Maybe another student in your science class taught you an easy way to remember the planets in the solar system.Maybe you got others excited about your new favorite book, and now everyone’s reading it.These are examples of how peers positively influence each other.

Sometimes peers influence each other in negative ways.For example, a few kids in school might try to get you to cut class with them; your soccer friend might try to convince you to be mean to another player and never pass him the ball.

It is tough to be the only one who says “no” to peer pressure, but you can do it.Paying attention to your own feelings and beliefs about what is right and wrong can help you know the right thing to do.

You’ve probably had a parent or teacher advising you to “choose your friends wisely.” Peer pressure is a big reason why they say this.If you choose friends who don’t cut class, smoke cigarettes, or lie to their parents, then you probably won’t do these things either, even if other kids do.

If you continue to face peer pressure and you’re finding it difficult to handle, talk to someone you trust.Don’t feel guilty if you’ve made a mistake or two.

小题1:For whom is the passage most probably written?

A.Students.

B.Parents.

C.Teachers.

D.Doctors.小题2:In the last three paragraphs, the author mainly_____.

A.explains why friendship is so important

B.gives advice on how to deal with peer pressure

C.discusses how peers influence us

D.shows how to make more good friends小题3:Which of following may help handle peer pressure?

A.Spending more time with classmates.

B.Taking up more relaxing hobbies.

C.Choosing friends with no bad habits.

D.Helping others who are in trouble.小题4:What is the topic of the passage?

A.Friendship.

B.Making decisions

C.Self-confidence

D.Peer pressure