成语是我国语言宝库中的珍贵财富。它不仅具有文字简练、意味深长的特点,而且有些成语中,还含有一定的物理知识。“刻舟求剑”、“掩耳盗铃”、“海市蜃楼”等成语中就包含着丰富的物理知识。“刻舟求剑”来源于《吕氏春秋.察今》,说的是楚国有一个人带着宝剑乘船过江,当船正在行驶的时候,一不小心,把剑掉入江中,他立即用刀在剑落 Idioms are precious treasures in our language treasure house. It not only has a concise, meaningful features, but also some idioms, but also contains a certain amount of physical knowledge. “Carved sword ”, “deceive”, “mirage ” and other idioms contains a wealth of physical knowledge. “Inscribed sword ” from “Lu Spring and Autumn .At present,” said that there is a person in Chu with a sword across the river, when the ship is driving, accidentally, the sword fell into the river, he immediately Swords in the sword with a knife