49. If a person says that he had a dream that lasted for four hours, (   ). 

• A、he is lying purposely
  
  

• B、he is trying to be funny
  
  

• C、he is honest and accurate(精確的)
  
  

• D、he is mistaken
  
  

17. I like to talk to my parents, (   ) I do not like them to add their ideas to me. 

• A、but
  
  

• B、because
  
  

• C、and
  
  

• D、so
  
  

55. (    )