_江西成考网

56.(  )

 Researchers are trying to（）what’s wrong with their experiments. 

• A、pull out
  
  

• B、call out
  
  

• C、take out
  
  

• D、 figure out
  
  

What did Robert want to show with his video on YouTube?

• A、Dogs’conflict with other pets.
  
  

• B、Dogs’naughty behaviors.
  
  

• C、Dogs’trust in their owners.
  
  

• D、Dogs’apparent guilty looks.