what does the passage mainly talk about?意思why are teenagers at ri_其他解答

what does the passage mainly talk about?意思
why are teenagers at risk of injuries?
how can teenagers keep them safe during exercise?

人气：444 ℃　时间：2019-12-01 11:41:24

解答

这篇文章主要谈论的是什么?
为什么青少年有受伤害的危险?

青年人如何在训练中保护自己的安全