Learn More About Water
Water world
神奇的水世界
Water covers more than 70 percent of the Earth’s surface (表面). It’s found in oceans, rivers, waterfalls (瀑布) and streams (溪流).
- 对本期电子报订户、有效期内的VIP教师会员和本学期初一尊享卡用户,我们开放所有内容:
- 如果您拥有以上权限,请点这里登录;
- 订阅电子报,请点这里;
- 激活VIP教师卡,请点这里;
- 激活21英语尊享卡,请点这里。