TF阅读真题第727篇The Ecology of Kirtland's Warbler

Dutch Art and the Middle Class     Throughout history,the wealthy have been the most avid art collectors. Indeed, the money necessary to commission leading artists to ...

The History and Composition of Laundry Detergent     The earliest ancient people used plain water for cleaning. Water can dissolve different kinds of substances and then...

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...

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TF阅读真题第734篇The Sound Revolution in American Film

Martian Volcanoes       Earth is not the only planet to have volcanoes; in fact Mars-though all of its volcanoes have long been inactive-has the two largest ones i...

TF阅读真题第703篇Ice Age Triggers

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