49. Parents can find out what their kids will study next year by______. 

• A、doing math-related activities
  
  

• B、having a learning-filled summer
  
  

• C、reading the textbooks
  
  

• D、talking with the teachers
  
  

47. What did Dr. Harris Cooper find in his study?

• A、Kids love reading more after the summer.
  
  

• B、Kids show a special interest in math after the summer.
  
  

• C、Kids' math skills become weaker after the summer.
  
  

• D、Kids have a lot of fun in the summer.
  
  

 53.