TF阅读真题第685篇The Medieval Agricultural Revolution

TF阅读真题第684篇Escape Mechanisms of Ypsolopha Dentella

It is now generally accepted that dinosaurs (and large numbers of other animals and plants) went extinct about 65 million years ago, when Earth was hit by a giant asteroid (a rocky...

TF阅读真题第728篇Europe's Economic Recovery in the Fifteenth Century

TF阅读真题第705篇Freehold Society in Colonial New England

TF阅读真题第683篇The Solnhofen limestones and Archaeopteryx

By the twentieth century, making workers more “cost-efficient” had become the single most important management goal in large-scale industries. Everywhere in industrial America ma...

The physical and chemical properties of water, unsurprisingly, determine much about life in the ocean. Water is dense (high mass per unit of volume), about 840 times as dense as ai...

TF阅读真题第688篇Uniformitarianism and Earth's Cycles

The growing population of eighteenth-century Europe increased demand for cloth to clothe people. Urban merchants turned to rural people for additional, inexpensive labor: farming f...