The problem of organic farming is_____.

• A、poor qualities of soils
  
  

• B、high production costs
  
  

• C、the use of too much land
  
  

• D、the shortage of farm workers
  
  

Task 1　　

16.Paragraph①_____.

17.Paragraph②_____.

18.Paragraph③_____.

19.Paragraph④_____.

20.Paragraph⑤_____

A.proteins and calcium

　　B.fat and sugar

　　C.cough and cold

　　D.your body look and feel young

　　E.drink milk and honey

　　F.of calcium

College teachers are often annoyed with students' high self- esteem

• A、True
  
  

• B、False
  
  

• C、Not Given