2、 

Many people know Nobel Prize，but perhaps they have no idea what Stockholm Junior Water Prize is．It is annual (年度的)award given for an outstanding water project by young people aged l5 to 20．After taking part in the contest four times，Chinese teenagers won the title this year．

   The three Chinese students are all from Shanghai Nanyang Model High School．They won the prize for their achievement in designing a cost-effective ecological management(生态管理)program to reduce river pollution．They started the research on waste water treatment in 2004．Last year，they succeeded in reducing pollution of a river near their school，changing the dirty river into a clean one．

   The Stockholm Junior Water Prize contest is held during the World Water Week in Stockholm each August，aiming to encourage young people's interest in water and the environment issues．The Prize was awarded first in l995 and quickly developed into an international contest．

  Besides the award of$5，000，the Prize winner also gets a blue crystal sculpture(水晶雕塑)in shape of a water droplet(水滴)．Because of the contest，many young people around the world become interested in water．Let's hope all the rivers will become clean in the future．

  1．How many times have Chinese teenagers taken part in the contest?

  2．Where do the three Chinese students come from?

  3．What is the Stockholm Junior Water Prize?

  4．Why did they win the prize?

  5．What did they get for the prize?