Bug Antifreeze Ever seen a cricket wearing a parka? Probably not, but you might have wondered how insects make it through the winter! After all, theyre cold-blooded, so their body temperature is pretty close to the temperature around them! Why dont b

发表于:2018-12-31 / 阅读(54) / 评论(0) 分类 英语听力文摘 English Digest

Honeybees in Winter 一只蜜蜂无法度过严寒的冬天。一群蜜蜂则不同。据说蜂箱中的蜜蜂要过冬的时候,往往要抱成一团。最外面的一层是工蜂,它们拼命地煽动着翅膀,像厚厚的衣服一样阻隔着外

发表于:2019-02-24 / 阅读(82) / 评论(0) 分类 英语听力文摘 English Digest