49. Where is a visitor advised to park his car if he'll spend several hours at the Museum?

• A、In a garage provided by the Museum. 
  
  

• B、On a parking space near the Museum. 
  
  

• C、On a metered parking space on the street. 
  
  

• D、In a public garage at one end of Old Sacramento. 
  
  

37. Mr. Brown sees his sister (   ). 

• A、very seldom
  
  

• B、only at the end of the year
  
  

• C、only at Christmas
  
  

• D、on Mark's birthday every year
  
  

53. (      )