成绩好的十年级后的暑假搞定，不用补习班。娃说网上很多免费题，khan academy也有，没有用我自作多情买的书。

来源: TigerLady 于 2025-06-19 13:10:12 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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