_江苏成人高考网

The reason why some professors ask students to make presentations and lead discussions is that____．

• A、these professors are often not well prepared before class
  

• B、these professors want to stress“doing”

• C、these professors want to test the students’abilities

• D、these professors are not wiHing to teach theory

 ____and I’ll get the homework finished．

• A、Have olle more hour
  

• B、One more hour
  

• C、Given one more hour
  

• D、If I have one more hour
  
  

51.__________。