随着气温越来越高,孩子们喝饮料的频率也高了。校园里到处是孩子们随手扔掉的饮料瓶。“老办法”是在班内放一个袋子,把饮料瓶收集起来,卖到废品收购站,换来的钞票再变成奖品,奖励班中表现优异的同学。这个做法学生早已熟悉,现在也不感兴趣了。怎么办?必须想一个两全其美的办 As temperatures get higher and higher, children drink more often. There are drink bottles thrown away by children on campus. “The old way ” is to put a bag in the class, the collection of beverage bottles, sold to the waste collection station, in exchange for banknotes and then turned into prizes, rewards class outstanding students. This practice is already familiar with the students, are not interested now. What to do? You must think of the best of both worlds