求有关于dinosaur灭亡的英语评论(100-200词左右,不用太长)
问题描述:
求有关于dinosaur灭亡的英语评论(100-200词左右,不用太长)
答
Dinosaurs were vertebrate animals that dominated terrestrial ecosystems for over 160 million years,first appearing approximately 230 million years ago.At the end of the Cretaceous Period,65 million ye...