清亮的河水里,一群小河蚌正在老河蚌的带领下欢快地“散步”。暖暖的阳光照耀着河水,微风吹拂,河面上仿佛洒下了一层金子。忽然,在一道河湾里,老河蚌停了下来,回过头,语重心长地对小河蚌们说：“孩子们,你们不能光顾着玩,应该去捡一粒沙子了。”那副神情,就像为我们传播知识的老师,既有希望,也有忧虑。 In the clear river, a group of small mussels are merry “walking” under the leadership of the old mussels. The warm sunshine shines on the river, the breeze blows, and the river seems to shed a layer of gold. Suddenly, in a river bay, the old mussels stopped and looked back earnestly to the river mussels who said: “Children, you can not patronize play, should pick up a sand.” That look, Like the teacher who spreads knowledge for us, there are both hope and worry.