这个我不知道，我知道有的书附带一年的线上练习，所以书不能早买

来源: 于 2026-01-25 18:15:33 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Online Access (e.g., Kaplan, AAMC): Most companies offer a 1-year (365-day) access period for digital content, which can sometimes be extended within 60 days of expiration.