“水牛儿,水牛儿,先出犄角后出头……”雨后,在墙角经常可以看到缓慢爬动的蜗牛,小孩们对它轻轻地唱着儿歌.儿歌中唱的“犄角”是指蜗牛的触角.蜗牛有两对触角,一对长一对短,蜗牛的眼睛长在长触角的顶端.蜗牛在爬行过程中,两对触角不断地伸缩摇摆,如果触角接触到障碍物,蜗牛就会立即停止或转变前进的方向.有趣的是,蜗牛的触角还可以闻到气味,如果把蜗牛的触角切断,那么蜗牛就什么味道也 “Buffaloes, Buffaloes, the first after the horns out of the first ... ...” After the rain, you can often see slowly crawling snail in the corner, the children sing it gently to children’s songs. "Refers to the snail’s tentacles.Silk has two pairs of antennae, a pair of long a pair of short, snail’s eyes long at the top of the long antennae.S snail in the process of crawling, two pairs of tentacles continue to telescopic swing, if the antennae contact obstacles Things, snails will immediately stop or change the direction of the forward.It is interesting that the snail tentacles can smell, if the snail cut off, then the snail what taste