问题 单项选择题

房颤患者心室律变为慢而规则(30~60次/分)提示可能出现下列哪种情况

A.恢复窦性心律
B.房性心动过速
C.完全性房室传导阻滞
D.发生房室交界区性心动过速或室性心动过速

答案

参考答案:C

解析:[考点] 心房颤动的并发症
心房颤动患者心律极不规则,心率快可达100~160次/分(房室传导正常者)。若患者心室律变为慢而规则,最大的可能是发生了完全性房室传导阻滞,此时心房的冲动完全被阻滞,心室的潜在起搏点起动,使心室搏动慢而规则。故答案为C项。

阅读理解

Nearly all the visitors to southeast France pay a visit a Monaco, too. Lying near the French-Italian border, Monaco is not part of France, but a separate principality (大公国)—though it is surrounded by its great neighbour.

Monaco became a principality in the 16th century after being owned by a family member of a certain Italian king. The French and Italian, however, soon came to protect it one after another until 1861, when it became its own master again.

Facing the blue Mediterranean (地中海), Monaco is mainly made up of two cities, Monaco, where the palace for the Prince stands, and Monte Carlo, which is a wonderful place for visitors. Every year, about half a million people come to Monaco, nearly 25 times as much as its population.

Believe it or not, Monaco has no soldiers or policemen of its own. Law and order is kept by the French police, and the French stand for it in its foreign affairs, even the money used in Monaco is the franc, too.

1. Which of the following maps shows the right position of Monaco and its neighbouring countries? (Mc="Monaco," Fr="=France," I="Italy," Md=Mediterranean)

 

2. Monaco has a population of ____.

A. nearly 25 thousand                B. no more than 20 thousand

C. about 12,500 thousand             D. a little over 20 thousand

3. Which of the following is TRUE?

A. The national income of Monaco must be very little.

B. Monaco isn’t a completely independent country.

C. A principality is a country ruled by foreigners.

D. Monaco belongs to France since law and order is kept by the French police.

4. Now the head of the government of Monaco is ____.

A. an Italian        B. a French      C. a prince        D. a president

问答题 简答题