我们的生活中总是存在着一些非常流行的科学理论或说法。实际上，在这些理论当中，有的确实如此，有的却是人们的错误理解。日前，美国“生活科学网”就对这些问题进行了归纳总结。

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Chickens can live without a head
鸡没有脑袋也能存活

　　True, and not just for a few minutes. A chicken can stagger around without its noggin because the brain stem, often left partially intact after a beheading, controls most of its reflexes. One robust fellow lived a full eighteen months. Likely he was a real birdbrain, however.

　　正确！而且鸡在被“斩首”之后绝不只是能“苟延残喘”几分钟而已。事实证明，曾有一只精力充沛的家伙在被斩首后，居然摇摇摆摆、跌跌撞撞地活了整整18个月！