很古的时候,大雁和鸭子是两姐妹,住在南方的一个湖边上。大雁比鸭子早出世七天,大雁懂的事儿自然就比鸭子多一些。大雁和鸭子慢慢都长大了,也就是说,她们能够飞行了。这个时候,南方的气候发生了变化,天气渐渐热起来,一天比一天变得更加热。后来,她们所生活的那个湖干涸了;而且,附近所 In ancient times, geese and ducks are two sisters, living in a lake in the south. Dayan born seven days earlier than ducks, wild goose understand things naturally more than the duck. Geese and ducks have grown up slowly, that is, they can fly. This time, the climate in the South has changed. The weather is getting hotter and getting hotter day by day. Later, the lake where they lived dried up; and, nearby