你得說下娃的水平。往上，AOPS，他家大城市有據點。補課，kumon , Nextdoor,wyzant。問老師家長。

來源: TigerLady 於 2024-01-05 14:44:33 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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