读报
登录注册网站首页
 

LEARNING

Key course: Lighting up the sky

作者:TEENS
Aa
  • -   
  •    +

I. Getting started

Have you heard of auroras?

Where can you see auroras? What do they look like?  

II. Vocabulary in use

active    adj. 活跃的

点击阅读全文
联系我们  |  诚聘英才  |  关于我们  |  版权声明
© i21st.cn   京ICP备2024066071号-1
 
选择报纸
选择报纸
关闭