_云南成考网

40. The main idea of this passage is (   ).

• A、warfare is a "law of nature"
  
  

• B、warfare is not a "law of nature"
  
  

• C、warfare does not control human population
  
  

• D、none of the lowlier animals, except ants, practice warfare upon their own species
  
  

51. (    ) 

50. Which of the following is NOT true?

• A、Washington was brought up in England. 
  
  

• B、Washington became leader of colonists when he was 43 years old. 
  
  

• C、Washington D.C. is the capital of the USA. 
  
  

• D、Washington died at the age of 67.