曾读过一篇《麻雀与红襟鸟》的短文。文章的大意是这样的:在20世纪30年代,英国送奶公司送到订户门口的牛奶,既不用盖子也不用封口,因此麻雀和红襟鸟可以很容易吃到奶瓶内浮在上层的奶油皮。后来,牛奶公司把奶瓶用锡箔纸封起来,防止鸟儿偷食。没想到20年后,英国的麻雀学会了用嘴把奶瓶的锡箔纸啄开,继续吃它们喜欢的奶油皮。然而,同样是20年,红襟鸟却一直没有学会这种方法,自然它们就没有美 Have read a “sparrow and red-billed bird” essay. The article’s intentions are as follows: In the 1930s, milk from the British milk company to the door of the subscriber was neither covered nor sealed, so the sparrow and the red-billed bird were able to easily get to the top of the bottle . Later, the milk company sealed the bottle with foil to prevent the birds stealing food. Did not think 20 years later, the British sparrow learned to peck the foil paper bottle, continue to eat their favorite cream skin. However, the same is 20 years, the red-billed bird has not learned this method, naturally, they have no beauty