SCIENCE STUDY
Phelps races a shark
“菲鱼”与“鲨鱼”,谁游得更快?
Michael Phelps is a US swimmer. He is one of the world’s fastest. He has 28 Olympic medals (奖牌) in hand.
- 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。