學(xué)生英語笑話 問得好 Good question

055 問得好 Good question

A chemistry teacher told his friends,"Oxygen was not found until18 th century."

A friend asked,"So,what did people breathe before that"

一位化學(xué)老師對(duì)朋友們說:"氧氣是在 18 世紀(jì)才被發(fā)現(xiàn)的。"

一位朋友問:"那么在那之前,人呼吸什么呢?"

chemistry n. 化學(xué)