TF阅读真题第696篇The Northern Long-necked Turtle

The Role of Climate Change and Ecology in History   A popular activity of historians and nonhistorians alike has long been to try to associate historical developments with cha...

TF阅读真题第693篇Iron, Steam, and Factories in Eighteenth-Century Europe

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707篇The Silk Makers

TF阅读真题第785篇Mate Choice in Birds

TF阅读真题第736篇Environmental Impact of the Anasazi

Woody plants produce a great variety of chemical compounds to provide protection against other plants, diseases, and herbivores (plant-eating animals) big and small. These chemical...

TF阅读真题第719篇Did a Volcano Destroy the Minoan Civilization?

TF阅读真题第678篇Telescopes