59.(  )

He（）late into the night, but now he goes to bed early due to health reasons.

• A、used to work
  
  

• B、 used to working
  
  

• C、is used to working
  
  

• D、is used to work
  
  

What do Teitel' s words in the last paragraph imply?

• A、The tortoises were fond of seeing Earthrise.
  
  

• B、The tortoises were not given due credit for their experience.
  
  

• C、The tortoises were not named after the Soviet spacecraft.
  
  

• D、The tortoises were famous all over the world.