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51. (     ) 

43. What is the author's attitude towards the"law of nature"?

• A、Against.
  
  

• B、Supportive. 
  
  

• C、Skeptical. 
  
  

• D、Very much interested in.
  
  

37. Which of the following statements is NOT true?

• A、People should take their naps secretly. 
  
  

• B、Cats have the same moods as people.
  
  

• C、Some famous people take cat naps.
  
  

• D、Some people have full energy after they lake cat naps.