ipad必装软件推荐:英语填空

来源:百度文库 编辑:高考问答 时间:2024/03/29 21:43:49
It is not surprising to find seashells in the sands .Most seashells are ______near the sea .But some seashells can be found on high mountains.How did they get there?
The earth did not ______look the way it does touday.Once the sea covered more land.Then mountains slowly rose up.They grew higher and higher.And at last land from the bottom of the sea ______mountains.seashells were thus(这样)left on the stones are______fossils (化石).Fossils have been found all ______our country.Have ever found one?