New chemical warfare

　　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.

• 上一篇：Painting shows it all
• 下一篇：Flying near Athens