10.—Thank you for your guiding. — (   ). 

• A、My duty
  
  

• B、It's a piece of cake
  
  

• C、I'm fine
  
  

• D、It's my pleasure
  
  

53. (    )

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. If you smoke too often, your lungs will be even (   ). 

• A、good
  
  

• B、 worse
  
  

• C、poor
  
  

• D、well