问题 单项选择题

男性,40岁。临床诊断为等渗性缺水、低钾血症。经补液、补充钾盐后,出现脉率缓慢,手足感觉异常,肌无力,恶心、呕吐等症状。查体:血压90/60mmHg,脉搏50次/分。神志淡漠,心音减弱。ECG检查:T波高而尖,QT时间延长。临床判断为高钾血症,下列紧急治疗措施中,不宜采取的是().

A.立即停止钾盐的输入,静注5%碳酸氢钠60~100ml

B.25%葡萄糖溶液100~200ml,按每5g糖加入1IU胰岛素进行静脉滴注

C.硫酸镁1g,加入5%葡萄糖液或生理盐水500ml中静滴

D.呋塞米20~60mg加入50%葡萄糖40ml静注

E.10%葡萄糖酸钙20ml静脉注射

答案

参考答案:C

计算题
阅读理解

阅读理解

     San  Francisco is a spectacular city. It is famous for its steep hills, its earthquakes and the prison island of Alcatraz, but its most famous landmark is the Golden Gate Bridge. This is one of the most beautiful

bridges in the world. It has a simple, graceful shape, and is painted in an attractive orange.

     Work on the Golden Gate Bridge started in 1933 and continued for the next four years. The total cost of the bridge was US$35 million. At that time, its span of 1,200 meters made the Golden Gate Bridge the

longest suspension(悬浮) bridge in the world. The bridge is 2.7 kilometers long and, at the middle point,

70 meters above the water of San Francisco Bay. The main cables that hold the bridge are one meter in

diameter. The bridge can safely withstand(抵挡) winds of up to 160 kilometers an hour, and it can sway(摇摆) as much as 8 meters in strong winds.

     On Thursday, May 27, 1937, 200,000 people walked across the bridge to mark its opening. People

are still allowed to walk across: it takes about half an hour each way. It is worth the effort. As you cross,

you understand the engineering skill that went into the construction of the bridge. You also get wonderful

views of San Francisco and the Bay Area.

      The Golden Gate Bridge has been the scene of many events since it was completed. It was shaken by

the earthquake of 1989. Daredevil(喜欢冒险的) pilots have flown their planes under it. Sadly, too, some people have taken their own lives by jumping from the bridge. But throughout its history, the Golden Gate Bridge has been the symbol of San Francisco, like the Temple of Heaven symbolizes Beijing and the

Eiffel Tower symbolizes Paris

1. How many things make San Francisco famous?

A. Two (its history and its present).

B. Three (steep hills, earthquakes, the prison island of Alcatraz).

C. Four (Golden Gate Bridge, steep hills, earthquakes, the prison island of Alcatraz).

D. Five (the orange color of the bridge, the shape of the bridge, steep hills, earthquakes, the prison island

of Alcatraz).

2. The Golden Gate Bridge has been there for ______ years.

A. less than 70      

B. more than 70  

C. about 15  

D. about 50

3. What is TRUE about the bridge?

A. It was greatly damaged by the earthquake in 1989.

B. It can fight back strong winds of up to 180 kilometers an hour.

C. It has caused many deaths since its opening.

D. It is the symbol of the history of San Francisco.