时间，如同一张过滤网，当杂质都留在网上，被丢弃后，剩下的便都是精华了。蓦然回首以往那上千次的“一节课”，却惊异地发现，印在脑海中的，寥寥无几。最使我难忘的那节课，是一节班会课，距今已快七年了。那是我人生中第一次探讨有关情感的问题———“爱”的一堂课。爱是 Time is like a filter. When impurities are left on the Internet and discarded, all that remains is essence. If I look back at the “one lesson” that was used thousands of times in the past, I am amazed to find that there are very few words printed in my mind. The class that made me most memorable was a class lesson, which was almost seven years ago. It was the first time in my life to discuss issues related to emotions—“love”. Love is