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...

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...

Lighting in Museums       The practice of reducing light exposure in museums was prompted by the publication, in 1978， of Garry Thomson's book, The Museum Environ...

    The Collision Model of the Moon's Formation       The collection and analysis of rocks brought back from the Moon during the Apollo spaceflight prog...

  The Phenomenon of Hypnosis   题目：   Hypnosis is a process in which the person being hypnotized (the volunteer) demonstrates willingness to adopt suggestions by...

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...

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...

The Collapse of Copán 题目：   The ancient Mayan kingdom of Copan, in what is now western Honduras, flourished for many years in the first millennium but declined sharpl...

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...

题目： Magma   Magma is a mixture of molten (melted)and semi-molten rock and other solids found beneath Earth's surface.Melting in Earth requires very specific conditions:the...