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Activehealth 發表於 15-6-1 08:44
回覆 shadeslayer 的帖子
Yes, in fact it's encouraged. As all kids at school are learning PTH at the ... Most people know these facts. Does the school have a target ideal mixture of playground language? How do they Maintain that ideal mixture? What if the playground has 80% PTH? How do they know the best mixture? |
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