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TF阅读真题第757篇Water and ocean life
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764篇The Chemical Defenses of Trees
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706篇A Revolution in Consumption in the Eighteenth Century
TF阅读真题第706篇A Revolution in Consumption in the Eighteenth Century
TF阅读真题第748篇The Origin of the K-T Asteroid
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728篇Europe's Economic Recovery in the Fifteenth Century
TF阅读真题第761篇Oil Painting in Renaissance Florence
During the European Renaissance (1300-1600)， artists in Florence, Italy, made striking use of oil-based paints, but the development of these paints was part of a long and c...
TF阅读真题第765篇The Porcelain Industry at Jingdezhen
The Porcelain Industry at Jingdezhen Porcelain is a ceramic material that is prized for its translucence, hardness, and smoothness. Porcelainwas first produced in China, perhaps ...
