John Burroughs on Birds and Patient Attention
TOEFL-level close reading adapted from John Burroughs's public-domain essays on birds and field observation.
抽代笔记整理
抽代笔记整理 说明：以下内容按原 PDF 的出现顺序整理，并把手写笔记中的定义、定理、例子与证明改写为较接近数学书的排版。明显划掉、重复或笔误的地方已按上下文修正。 1. 素理想与极大理想 定义：素理想 设 R 为交换环， P subseteq R 为理想。若 1. P ne R ； 2. 对任意
Le carnet de quartier
A1-A2 French daily reading about a small neighborhood notebook.
Gilbert White on Swallows and Observation
TOEFL-level close reading adapted from Gilbert White's public-domain natural history observations.
动词 Verbe
Francisez 初学者的必备的１００个动词 常见法语动词变位（吐血整理，建议收藏） - 知乎 人称 appeler faire prendre porter avoir être aller trouver partir visiter -------------- --------------
Une matinée à la bibliothèque
A1-A2 French daily reading about a calm study morning at the library.
Darwin on Earthworms and Soil
TOEFL-level close reading from Charles Darwin's public-domain study of earthworms and vegetable mould.
Darwin on the Struggle for Existence
Darwin on the Struggle for Existence Blog permalink: https://kalax524.com/readings/2026-05-27-darwin-struggle-for-existence/ Source Charles Darwin, On
Le marché du samedi
Le marché du samedi Blog permalink: https://kalax524.com/lectures-francaises/2026-05-30-marche-samedi/ Niveau A1-A2. Texte original court pour lecture
John Muir on the Economy of Forests
John Muir on the Economy of Forests Blog permalink: https://kalax524.com/readings/2026-05-29-muir-forest-economy/ Source Adapted from John Muir, Our N