51.(      )

44. Why must we have good eating habits according to the passage?

• A、We want to eat more. 
  
  

• B、We want to enjoy our meals. 
  
  

• C、We want to be healthy and strong. 
  
  

• D、We want to grow up quickly. 
  
  

38. "... he hasn't forgotten one of Mark's seventeen birthdays"means (   ).

• A、he has forgotten more than one
  
  

• B、he sent Mark something on his 17th birthday
  
  

• C、he always sends a Christmas card on Mark’s birthday
  
  

• D、he always sends Mark something on his birthday