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TF阅读真题第740篇Economic Decline of the Roman Empire
The Roman Empire(31 B.C.E.-A.D. 476)， which conquered much of Europe, the Near East, and northern Africa, enjoyed great prosperity before facing economic decline in its later cent...
TF阅读真题第896篇Early Food Production in Africa
Early Food Production in Africa Farming appeared in Africa by 5000 B.c.E. Eventually, several different styles of food production developed. These variations were caused by ...
TF阅读真题第933篇The Collision Model of the Moon’s Formation
The Collision Model of the Moon's Formation The collection and analysis of rocks brought back from the Moon during the Apollo spaceflight prog...
TF阅读真题第965篇The Emergence of the State
题目： The Emergence of the State Before there was agriculture, people lived in small, loosely organized bands or tribes that hunted for and collected food in the wild. The emerg...
TF阅读真题第844篇Climate Change and Species Distribution
TF阅读真题第844篇Climate Change and Species Distribution
TF阅读真题第752篇Underground Water
Underground Water The hydrosphere is the collective mass of water at or near Earth’s surface. Beneath the land surface is the underground water component of the hydrosphere. The ...
