从前,有夫妻两人,他们一直没有孩子。后来,他们生了一个儿子,他们叫他南南。他长得很结实,胖乎乎的,干干净净的。他可碰上了爱干净的父母:动不动就洗手。南南长大了一点,父母开始教他正确走路:“乖儿子,上街时要看着脚底下,当心别跌倒了。在走山路时还是要看着脚底下,那上面最容易滑倒,可别摔断了脊梁骨。下山时照样要看着脚底下,不然 Once upon a time, there were two couples, who had never had children. Later, they gave birth to a son who called him south-south. He looks strong, chubby and clean. He can run into clean-minded parents: wash hands at will. South grew up, parents began to teach him to walk correctly: ”good son, when the street to look under the foot, be careful not to fall.When walking down the mountain or looking at the foot, it is most likely to slip , Do not break the spine.Also look down at the foot of the mountain, otherwise