_云南成考网

According to Sentence 2，which of the following is true?

• A、The destruction is similar to the killing of each other within human beings.
  

• B、There is not the similar destruction now．but it occurred before．

• C、There is never a time when we may see the similar destruction．
  

• D、The destruction is now a thing of the past．

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

55__________。