_临沂成人高考网

Naps usually last____．

• A、three hours
  

• B、less than half an hour
  

• C、forty-five minutes
  

• D、fifty-five minutes
  
  

Which of the following is true?

• A、How the light shines on our work is of much importance.
  

• B、The way the light shines on your work makes no difference.
  

• C、We needn’t care about where the light comes from.

• D、People Call write or study under a light that opines from any direction.

54.__________.