上课了，我在讲台上拉家常似的笑吟吟问学生：“同学们常说‘世上只有妈妈好’，可你们知道自己的妈妈今年多大了？”学生们莫名其妙，七嘴八舌地回答：“我妈今年三十九。”“我妈今年四十三。”……我微笑着点点头：“哦，同学们的妈妈大都在四十岁上下。”我边说边在黑板右 In class, I asked the students at the podium on the podium. “Classmates often say ’only mom is good in the world’, but do you know how old your mother is this year?” The students were puzzled and replied: “ My mother is thirty-nine this year.” “My mother is forty-three this year.”...I smiled and nodded. “Oh, most of my classmates’ moms are in their forties.” I said, right on the blackboard