The Strange and Beautiful World of Arches National Park 犹他州拱门国家公园:奇怪而美丽的世界 This week on our national parks journey, we travel to Utah. The western state is home to several of the most popular national parks in Americ

发表于:2018-12-16 / 阅读(102) / 评论(0) 分类 2016年VOA慢速英语(十)月

He wears gloves and cleans his tools with alcohol to avoid contaminating the ancient salt samples with modern microorganisms.

发表于:2019-01-02 / 阅读(120) / 评论(0) 分类 寻访外星人

Mars Rover Finds Evidence of Ancient Sea David McAlary The U.S. space agency NASA says Mars once had a shallow, salty sea that could have supported life. The evidence has come from chemical and physic

发表于:2019-01-04 / 阅读(39) / 评论(0) 分类 VOA2004(上)--各类新闻

Lesson 28 A Block Of Salt 第28课 一块盐 Every day we eat some of the white powder which we call salt. Salt does our bodies good, and keeps them healthy. We eat it at dinner along with our meat. We eat it, too, with eggs, and watercress, and with

发表于:2019-02-13 / 阅读(44) / 评论(0) 分类 英国学生科学读本

Sea-water is salty, and people who live near the sea can get salt by filling shallow ponds with sea-water in summer, when the sun is strong. 海水里面是有盐的。夏天日照很强烈的时候, 住在海边的人, 只要把浅浅的池子灌满海

发表于:2019-02-13 / 阅读(50) / 评论(0) 分类 英国学生科学读本

Amid rumors that there were prehistoric mammoths wandering around the unknown region and that somewhere in its wilds was a mountain of rock salt 80 by 45 miles in extent,the two captains set out. (同位语从句rumors that) 当时有一些传言,说

发表于:2019-02-21 / 阅读(41) / 评论(0) 分类 托福英语