51. (    ) 

50. Which of the following is NOT true?

• A、Washington was brought up in England. 
  
  

• B、Washington became leader of colonists when he was 43 years old. 
  
  

• C、Washington D.C. is the capital of the USA. 
  
  

• D、Washington died at the age of 67.
  
  

31. (      )

• A、common
  
  

• B、usual
  
  

• C、ordinary
  
  

• D、strange