An instructor in chemical warfare asked soldiers in his class: "Anyone knows the formula for water?"
"Sure. That‘s easy," said one man.
"What is it?"
"H, I, J, K, L, M, N, O."
"What, what?" reasked the instructor.
"H to O," explained the chemistry expert.
如果覺(jué)得這篇文章對(duì)您有幫助,請(qǐng)打賞支持一下!