问题 填空题

单相桥式整流电路的二极管导通原则中,其阴极组的管子,其阴极电位是相等的,那么阳极()的管子导通。

答案

参考答案:电位最高

阅读理解

阅读理解。

       In 1896, the first modem Olympic Games was held in Athens, Greece. Since then many

countries have successfully held the Olympics, such as the UK, France , Cermany, Canada, the USA ,

Spain and Australia.

       After more than a century the Games returned to its hometown in 2004.

       When people hold the Olympic Games, they always make an emblem (会徽). The emblem of the

2004 Athens Olympic Games is a white circle of oliver branches in the sky.

        

      Now Athens is developing a spirit of peace (和平). An officer said "While in Athens, the world

should be at peace. We hope the peace is not just for a short time. We would like the message from

the Athens Games to help countries come together and solve their problems."

      In 2008, the Olympic Games will be held in China. And China has already made a seal as the

emblem of the Beijing 2008 Olympic Games.The emblem has a single Chinese character on a red seal

and means "Chinese seal-dancing Beijing". Below it, there are the words "Beijing 2008". The character

in the emblem is "Jing". It means "capital" of China and it is also like a runner or a dancer. The running

figure (人形) of the emblem shows the spirit of the Olympics—faster, higher and stronger.

1. In which country was the first modem Olympics held?

A. In Greece. 

B. In China. 

C. In Australia.  

D. In France.

2. What do people always make when they hold the Olympic Games?

A. picture    

B. An emblem 

C. A flag 

D. A map

3. What message does the Athens Olympic Games want to give?

A. War 

B. Luck 

C. Danger 

D. Peace. 

4. How many years have passed when Athens again holds the Olympic Games?     

A. 100

B. 104

C. 108 

D. 112

5. The spirit of the 2008 Olympic Games is _____.

A. history and friendship

B. faster, higher and stronger

C. running and dancing  

D. peace, friendship and development

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