...不用太长也不要太短 单词最好简单一点 也不要太简单 初二水平...
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发布时间：2024-09-26 16:21
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In more than two hundred million years ago the Mesozoic era, a large number of reptiles live on land, so the Mesozoic is also known as the "age of reptiles," the earth was first vertebrate widely held. At that time of the earth's climate is warm, and the land is lush forests, reptiles have enough food, flourish gradually, more and more species. They are constantly to differentiate into a variety of different types of reptiles, some became today's tortoise, some became today's crocodiles, some became today's snakes and lizards, including a kind of mammals evolved into all over the world today.
Dinosaur is the largest reptile in the medical category, very suitable for living in marshes and shallow lake, at that time the air is warm and humid, food also ?
