题目

 He is Yi Yangqianxi. His English name is Jackson. Yi is 16 years old. He is a student in a school in Beijing. And he is also a boy in the group (组合) TFBOYS.TFBOYS has another (再一) two boys—Wang Yuan (Roy) and Wang Junkai (Karry)．They all have good looks. They all like singing and dancing.    Wang Yuan and Wang Junkai are Yi's friends. And Yi has another friend. He is a toy bear. He is always in Yi's schoolbag.Yi goes to school with him every day.“He can't speak (说)，but he can listen to me. He is very nice. I like him very much，” Yi says. 根据短文内容，五（3）班有48名同学，如果每人每月节约0.2吨水，则一年节约水多少吨？