27. (   )

• A、sending
  
  

• B、keeping
  
  

• C、contacting
  
  

• D、in touch with
  
  

54. (   )

48. It can be inferred from the passage that (   ). 

• A、when one is in a bad mood, he or she may not work very well
  
  

• B、the best way to overcome a bad mood is to talk to oneself
  
  

• C、some drugs are more effective than physical exercises
  
  

• D、taking drugs is at the risk of being poisonous