17. Paragraph ②（   ）

• A、

  Making droughts worse

  
  

• B、
  
  
  
  
  
  
  
  
  

  Harmful elements in bottled water

  
  
  
  
  
  
  
  
  
  
  
  

• C、
  
  
  
  
  
  
  
  
  

  Need for a better image of tap water

  
  
  
  
  
  
  
  
  
  
  
  

• D、Growing attention to tap water

• E、Causing waste and pollution

• F、
  
  
  
  
  
  
  
  
  

  Increasing sales of bottled water

  
  
  
  
  
  
  
  

21.City people prefer bottled water

• A、

  in tiny amounts

  
  

• B、

  towards tap water

  
  

• C、

  does harm to the environment

  
  

• D、

  brings more health benefits

  
  

• E、

  with the problem of drought

  
  

• F、

  despite the safety of tap water

  
  

A.consists	E.small	I.raise
B.mainly	F.center	J.known
C.attending	G.hardly	K.home
D.clear	H.beautiful	L.way