我的妈妈对我每件事情要求都很严格。我无论做什么事,妈妈总能或多或少地挑出些毛病。可就在前天,妈妈竟然开心地笑着说我长大了,那甜丝丝的滋味到现在还在我的心头荡漾。为什么会这样呢唉!说来话长,这事儿还得从我们班里的卫生说起…… My mom asked me everything is strict. No matter what I do, my mother always more or less singled out some problems. But just the day before yesterday, my mother even said with a smile that I grew up happy, that sweet taste still rippling my heart. Why is this? Alas! Speaking from a long story, we have to talk about the health in our class ...