读报
登录注册网站首页
 

EXTRA CREDIT

Running in the right direction

作者:TEENS
Aa
  • -   
  •    +

Getting started

How quickly can you finish a 50-meter run? How long does it take for girls to complete the 800-meter race? What about boys in the 1,000-meter race?

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