TF阅读真题第799篇Surviving as a Conifer

TF阅读真题第810篇The Evolution of Grass and Herbivores

TF阅读真题第801篇Spectroscopy and the Substance of Stars

TF阅读真题第839篇Money in the European Middle Ages

TF阅读真题第800篇Ocean Currents

TF阅读真题第829篇Expansion of the Inca Empire

TF阅读真题第841篇The Beginnings of Radar Astronomy

TF阅读真题第842篇Waking Up: Coming Out of Hibernation

TF阅读真题第808篇Effects of Plate Tectonics on Species

TF阅读题目合集：https://shimo.im/docs/Wr3DpZZKnwi1El3J/read     第1篇Grinding Grain http://www.tuonindefu.com/?p=719 第2篇Machines and Manufacturing http://www.t...