OUR WORLD
Sun-powered plane starts its world tour
JUST after dawn on March 9, Swiss pioneers started their first round-the-world trip on a solar-powered plane.
- 对本期电子报订户、有效期内的VIP教师会员和本学期高三尊享卡用户,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。