A teacher was giving her pupils a lesson on logic...这篇短文老师说的bank和学生说的bank各是什么意思

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?"
逻辑推理
小学四年级的教师正在给学生们上一堂逻辑课.她举了这么一个例子：“有这样一种情况,一个男人在河中心的船上钓鱼,突然失去重心掉进了水里.于是他开始挣扎并喊救命.他的妻子听到了他的喊声,知道他并不会游泳,所以她就急忙跑向河岸.谁能告诉我这是为什么?” 一个女生举手答道,“是不是去取他的存款?
PS:老师说的是河边的意思,学生以为是银行的意思