恐龙灭绝的原因 上面要中文 下面写英文
问题描述：
恐龙灭绝的原因 上面要中文 下面写英文
中文：.
英文：.
答
In 200 million years ago,a large number of Mesozoic reptile living on the land,so the Mesozoic is also called "reptiles age",the earth was first vertebrate widely held.Then the earth's climate warm,ev...