问题 单项选择题 B型题

造成急性上呼吸道感染的病原体临床最常的是()

A.病毒

B.细菌

C.真菌孢子

D.刺激性气体

E.奴卡菌

答案

参考答案:A

解析:急性上呼吸道感染70%~80%是由病毒引起的。而致敏原花粉、有机粉尘、真菌孢子的吸入可以引起气管-支气管过敏反应,从而导致急性气管-支气管炎的发生。

阅读理解

阅读理解。

     SINA-In order to let people go out more easily during the 2008  Olympic Games,  Beijing is  Going to

start a special bus line and seven more nihgt bus lines. 40% of the taxis will be in service for 24 hours. The subway will run longer hours, too.(December 27, 2007)

    YAHOO-An old man called Shen Yuan made five Fuwa toys with 6,000 pieces of paper. It took him a few months of to finish them. Mr. Shen will make another five bigger  Fuwa toys and send them to Beijing.

(January 7, 2008)

     BAIDU-The Olimpic Flame(圣火)  has arrived in Beijng, show that the Olympic Games  in China will

soon begin. From today, the torch(火炬)will carry the Flame across the world. (March 31, 2008)

     XINHUA-Yang Yang, a famous Chinese skater,  received the Beijing Olympic torch from a leader in

Sanya,  May 4, 2008. Yang ran the first 200 metres during the torch relay (接力) in Sanya, the first leg in

the Chinese mainland(大陆). (May 4, 2008)

1. ____ isn't mentioned in the news above.

A. The bus      

B. The    

C. The subway    

D. The plane

2.  The old man's Fuwa toys were made of ___. 

A.  glass    

B. paper    

C. cotton    

D. silk

3.  The torch has carried the Flame across the world since ___.

A.  December 27, 2007      

B. January 7, 2008

C.  March 31, 2008        

D.  May 4, 2008

4.  In the Chinese mainland, the first leg of the torch relay started in ____.

A. Beijng    

B. Chongqing    

C. Shanghai    

D. Sanya

5.  There ____ of news about the Olympic torch relay here.

A. is only one piece      

B. are two pieces    

C. are three pieces

D. are four pieces

单项选择题 B型题