54. (    ) 

二、詞匯與語法知識: 共15小題; 每題2分, 共30分。從每小題的四個選擇項中, 選出最佳的一項。

6. Teachers recommend parents (   ) their children under 12 to ride bicycles to school for safety. 

• A、not allow
  
  

• B、do not allow
  
  

• C、mustn't allow
  
  

• D、couldn't allow
  
  

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.