问题描述: people in past really didn't know the e___ is round 1个回答 分类:英语 2014-09-18 问题解答: 我来补答 earth 地球很高兴为你解答!老师祝你学习进步!请及时采纳哦!多谢你的问题!^_^ 展开全文阅读