问题 单项选择题 A1/A2型题

动脉血压升高时可引起()

A.心交感神经兴奋

B.心迷走神经兴奋

C.交感缩血管神经兴奋

D.窦神经传入冲动减少

E.主动脉弓传入冲动减少

答案

参考答案:B

解析:当动脉血压升高时,动脉壁被牵张的程度升高,颈动脉窦和主动脉弓压力感受器刺激加强,经窦神经和主动脉神经传入延髓孤束核、延髓腹外侧心血管中枢,使迷走神经紧张性活动加强。

单项选择题 B1型题
阅读理解

阅读理解。

     "Let's go Dutch, shall we?" Jim said after a dinner to his friends in a restaurant. What does Jim mean?

     Long ago, there was a kind of dinner called Dutch treat. At a Dutch treat, the invited guests were expected

to pay for their own share of the food and drink. Now, Dutch treat means when friends go out to have fun,

each person pays his or her own share.

     There are many other expressions related with "Dutch" in American English. However, most of them were

first used in England in the 17th century. At that time, the British and the Dutch were war enemies. So when

British people talked about something wrong or bad, they would like to use the word"Dutch".

     A common expression heard a few years ago was in Dutch. A friend may tell you,"You are in Dutch. The

teacher is angry with you. Be careful!" When a soldier took Dutch leave, he left the army without permission.

Dutch courage was the false courage produced by the effects of drinking wine.

      There is one expression that did come from the Dutch. That is to talk like a Dutch uncle. The Dutch were

known for the strict and serious way they educated their children.

1. What did people mean by saying "Let's go Dutch"?

A. The guests should leave first.

B. Each person should pay his or her own bill.

C. The food should be better next time.

D. People should go to another restaurant.

2. According to the passage, the British in the 17th century ______.

A. first used the word "Dutch"

B. were mistaken for Dutch people

C. got along well with the Dutch people

D. used the word "Dutch" for something bad

3. If your friend says that he is in Dutch, he most probably means that ______.

A. he is happy

B. he is lucky

C. he is in trouble

D. he is on vacation

4. If someone spoke to you in a very serious way, you may say that he ______.

A. was like a Dutch uncle

B. would take a Dutch leave

C. had Dutch courage

D. had a Dutch treat