自从《求学》2004年第3期刊出昌嘉快乐新化学有奖征答题后,广大读者踊跃参与,截至3月3l日收到来信近万封。这是第1期有奖征答,所以主要由我来批改应征答卷。在批改的过程中,我越来越感到现在的中学生很有灵气、有水平,前途无量。有的读者居然能把“燃烧规律”原文中的疏漏给改正过来。如,能发现原文中 H_2S 的不完全燃烧反应式不妥当,即不应只局限于一种反应比例: 2H_2S+2O_2=SO_2+S+2H_2O,还应有许许多多种反应比例,不管是哪 Since the “study” in 2004 the third issue of Changjia Happy New Chemistry prize answer questions, the majority of readers actively involved, as of March 31, received nearly 10,000 letters. This is the first prize solicitation, so I mainly to modify the application form. In the course of correcting the amendment, I feel more and more that the middle school students now have a very aura, a level and a promising future. Some readers actually can “flames ” in the original omissions to correct it. For example, it can be found that the incomplete combustion reaction equation of H 2 S in the original text is improper, that is, it should not be limited to a reaction ratio: 2H_2S + 2O_2 = SO_2 + S + 2H_2O. There should be many kinds of reaction ratios, no matter where