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爱垦北美外教|我们的RAZ绘本这样读

2020-06-17
RAZ全称是“Reading A-Z”,是目前市面上最为流行的英文分级阅读读物。在北美,超过半数公立学校将RAZ作为阅读教材,美国80%的学区和中国大部分的国际学校都是RAZ的忠实用户。其覆盖量已经超过全球180多个国家,数百万学生正在使用...

Follow me around our solar system - The Sun

2020-05-31
The Sun, our star, the heart of our solar system is a yellow dwarf star, a hot ball of glowing gases.OverviewThe Sun is ...

Follow me around our solar system - Kuiper Belt

2020-05-31
A donut-shaped region of icy bodies beyond the orbit of Neptune. There may be millions of these icy objects, collectivel...

Follow me around our solar system - The Oort Cloud

2020-05-31
The Oort Cloud is the most distant region of our solar system. Even the nearest objects in the Oort Cloud are thought to...