43. The author of this passage seems to be (   ) the"law of nature". 

• A、against
  
  

• B、in favor of
  
  

• C、uncertain of
  
  

• D、very much interested in
  
  

32. (      )

• A、seat
  
  

• B、seating
  
  

• C、sitting
  
  

• D、sit
  
  

52 .(    ).