A fourth-grade teacher was giving her pupils a lesson on logic.

"Here is the situation," she said. "a man is standing up in a boat in the middle of a river, fishing. He loses his balance, falls in, and begins splashing and yellin
g for help. His wife hears the commotion, knows that he can't swim, and runs down to the bank. Why do you think she ran to the bank?"

A girl raised her hand and asked, "to draw out all of his savings?"

小學四年級的教師正在給學生們上一堂邏輯課。

她舉了這么一個例子：“有這樣一種情況，一個男人在河中心的船上釣魚，突然失去重心掉進了水里。于是他開始掙扎并喊救命。他的妻子聽到了他的喊聲，知道他并不會游泳，所以她就急忙跑向河岸。誰能告訴我這是為什么？”

一個女生舉手答道，“是不是去取他的存款？”

笑點在這里：bank在英語中除了我們平時很熟悉的“銀行”之外，還有“河岸”的意思。