问题 单项选择题 A1型题

关于血液净化的临时血管通路的建立,以下错误的是()

A.包括直接血管穿刺和留置中心静脉管两种方式

B.中心静脉置管可出现血、气胸、心律失常、中心静脉穿孔等并发症

C.使用锁骨下静脉导管的再循环率高于股静脉导管

D.股静脉置管留置时间可在2周以上

E.当血流量超过200ml/分钟时,再循环率会超过10%

答案

参考答案:C

解析:使用锁骨下静脉置管的再循环率低于股静脉置管,这可能与局部解剖结构和血流动力学有关。故选择C。

阅读理解

阅读理解

      Every child should have a solid science education whether they want to be the next Albert Einstein

or Michael Jordan.Science is all around us. it is everywhere. reaching everything that we do.The  "we" 

 in that last statement includes children.Children that understand how science plays a role in our everyday

lives have a wonderful foundation (基础) for success in life.

     Children can learn science at any age really.The earlier they start the better.The best way for kids to

learn is through play and repetition.There are wonderful science toys for preschool science activities.With

play being the best way kids learn. it only makes sense then to introduce toys to them that encourage

understanding science.Children love to use their imagination to have fun and to help them understand the

world around them.So play is a wonderful time to be introducing science to them.Think of the games that we used to play:Don't Spill the Beans. Don't Break the Ice. the Telephone Game. Lincoln Logs. each of

these games has science behind it.

     Children are by nature curious (好奇的) as they feel out the world. trying to make sense of what is

around them.Science feeds that curiosity that they have.It is a hunger that needs to be encouraged and

satisfied.Finding these toys is not as hard as one would think.To make sure that you get good quality toys. visit science toy shops online.These are the best places to find unique (独特的) science toys such as 3D

space projectors. or Hydro Greenhouses.

      Help your children appreciate the world around them by understanding the world around them.This

way. they understand how we are all connected together.Children will not only question the world. but

be able to come up with answers to those questions on their own.Science is life.

1. Children should have a good science education because________.

A. they want to be famous scientists in the world

B. it can help them to make a large amount of money

C. it plays a decisive role in their daily lives

D. it is hepful to their success in the future.

2. According to the passage. which of the following is TRUE?

A. Science is hardly connected with our daily lives.

B. Children learn science best through playing.

C. Children learn science using their hands.

D. Parents should encourage their children to study hard.

3. Don't Spill the Beans. Don't Break the Ice. the Telephone Game and Lincoln Logs are

    the games________.

A. that are the most widely played

B. that can introduce science to children

C. that most students like to play at school

D. that keep children strong and healthy

4. The third paragraph is mainly to tell us that________.

A. children are born curious about the world

B. it is necessary to feed children in time

C. science toys can satisfy children's curiosity

D. most of the toys online are very cheap

5. The text is most probably written for________.

A. parents  

B. scientists  

C. children          

D. teachers

问答题