The Fourth Element1

Teacher: What are the four element of nature?

Student: Fire, air, earth, and... and ...

Teacher: And what? Just think it over, what do you wash your hands with?

Student: Soap!

第四元素

老師:自然界的四大元素是什么?

學生:火、氣、和。。。和。。。

老師:和什么?想一想, 你用什么洗手的?

學生:肥皂。