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TF阅读真题第943篇The Origin of Flight in Birds
The Origin of Flight in Birds 题目： Debate over avian origins was stimulated in 1861 when the 150-million-year-old fossil of a bird-like creature was unearthed. Called Archaeopt...
TF阅读真题第942篇Currency and the Emergence of china’s Market Economy
Currency and the Emergence of china's Market Economy 题目： China's Song dynasty (960-1279 c.E.), building on developments of the earlier Tang dynasty(618-907 c.E...
TF阅读真题第941篇Megapode Approaches to Incubation
TF阅读真题第941篇Megapode Approaches to Incubation Megapode Approaches to Incubation 题目： The megapodes are a family of birds with unusually large legs. Alone am...
TF阅读真题第940篇Transportation and Urban Development in Los Angeles
Transportation and Urban Development in Los Angeles 题目： In the early twentieth century, the key urban problem in the United States was congestion. Streetcars (pu...
TF阅读真题第939篇Indigo
Indigo 题目： Indigo is a blue dye produced from plants of the genus group Indigofera, grown in tropical and subtropical climates, and it has been highly valued since ancie...
TF阅读真题第938篇Deer and the Forests of Kinkazan
Deer and the Forests of Kinkazan 题目： The ancient beech forests of Kinkazan Island off the coast of northern Japan are in danger of disappearing. Few beech saplings (young tree...
TF阅读真题第937篇Wool Manufacturing in Europe in the High Middle Ages
Wool Manufacturing in Europe in the High Middle Ages During the High Middle Ages (1000-1300 c.E.), the Baltic Sea, North Sea, and English Channel tied together the peoples...
TF阅读真题第936篇The Key Factors Influencing Soil Formation
The Key Factors Influencing Soil Formation Soil is the product of the complex interplay of several factors. Weathering, a process that breaks down rocks by physical (mechani...
TF阅读真题第935篇Benefits of Migration
Benefits of Migration Why do animals migrate? One obvious answer is to escape cold weather by moving to a warmer region. Each fall, millions of monarch butterflies migrate southw...
