確實如此。非洲的疫情最輕，人口年輕是一個方麵，沒有書本是另一個方麵。中國的河南就比北京好得多。

來源: solo1 於 2023-05-20 14:51:20 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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