导读 Primer 是一个免费读书网站:按学科列出最值得读的书,每本书有导读、划线提问、小测验和阅读地图,不用登录就能看。登录(Google 账号或邮箱验证码)只用来保存你自己的划线、提问和阅读进度;用 Google 登录时,我们只获取你的 Google 账号编号、名字和邮箱,不用于广告,也不与第三方共享,详见隐私政策。

Primer (daodu.org) is a free reading site: for each subject, the books most worth reading, each with a guide, highlights and questions, a short quiz and a reading map — all readable without signing in. Signing in (with Google or an emailed code) only saves your own highlights, questions and progress; with Google we receive only your Google account ID, name and email, never used for ads or shared with third parties. See our Privacy Policy.

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