Why do people never feel hungry on a beach

　　腦筋急轉(zhuǎn)彎最早起源于古代印度。就是指當(dāng)思維遇到特殊的阻礙時(shí)，要很快的離開習(xí)慣的思路，從別的方面來思考問題?，F(xiàn)在泛指一些不能用通常的思路來回答的的智力問答題。腦筋急轉(zhuǎn)彎分類比較廣泛：有益智類，搞笑類，數(shù)學(xué)類，成人類等。 腦筋急轉(zhuǎn)彎是種娛樂方式，同時(shí)也是一種大眾化的文字游戲。

　　1、Why do people never feel hungry on a beach?

　　2、What's the difference between a monkey and a flea?

　　3、What hangs on the wall without nail or string?

　　答案：

　　1、Because of the sand which is there

　　2、A monkey can have fleas but a flea cannot have monkeys

　　3、Cobweb