你還記得我沒做出來的那道麵試題嗎？

來源: 於 2010-05-11 08:17:48 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

A cow has none but a bull has one. There are two in a big chuck of beef.
what is it?

ha