_江苏成考网

51. (    )

30. (   )

• A、Hence
  
  

• B、for
  
  

• C、but
  
  

• D、or
  
  

39. If the information given in this passage is correct, when we look at a star at night (   ). 

• A、we will notice that it is not moving
  
  

• B、we cannot tell whether or not it still exists
  
  

• C、it is four years that the light we can see will reach us
  
  

• D、it will be brighter than the moon