54. (    ) 

44. You shouldn't sit with your back towards the window because (   ). 

• A、the light is too bright
  
  

• B、the light is bad for your eyes
  
  

• C、you are in a dark room
  
  

• D、your book is in your shadow
  
  

43. The author of this passage seems to be (   ) the"law of nature". 

• A、against
  
  

• B、in favor of
  
  

• C、uncertain of
  
  

• D、very much interested in