TF阅读真题第726篇The Horse and the Camel in Early China

Lenape Horticulture       Older scholarship on Native Americans assumed that, at the time of their first contact with Europeans, Native Americans in the northeaste...

Extraterrestrial lmpact and Megafauna Extinctions     About 13,000 years ago, near the end of a period called the Pleistocene, North America was populated by megafauna (...

American Licensing Laws 题目：   In the early-nineteenth-century United States, the medical profession was largely unregulated. There were several competing schools of medic...

TF阅读真题第827篇The Theory of Geographic Speciation

TF阅读真题第735篇The Role of Fragrance in Plant Pollination

Characteristics of Tropical Rain Forests Almost all the action in a rain forest (not just photosynthesis but also flowering, fruiting, predation, and herbivory) happens high in t...

TF阅读真题第704篇Air-Breathing Fishes

TF阅读真题第822篇Newspapers in the Nineteenth-Century

TF阅读真题第784篇Proto-industrialization in Europe