According to the passage, which of the following reached the moo first?

• A、A pair of tortoises.
  
  

• B、American astronauts.
  
  

• C、Russian astronauts.
  
  

• D、Dogs and monkeys.
  
  

What does the author think of the role of music?

• A、It is important for dealing with social crises.
  
  

• B、It may offer children future job opportunities.
  
  

• C、It is fundamental to the growth of a child.
  
  

• D、It can help children learn core subjects.
  
  

57.(  )