中國孩子現在讀書太多了，文革前以及文革中近視並不多，可視為佐證。一個結果常有多種原因。

來源: 欲千北於 2016-04-11 18:40:04 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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