TF阅读真题第847篇Waking Up Coming Out of Hibernation

There is a much greater similarity between the flowering plant floras of different continents—South America, Africa, Asia, and Australia—than between the mammalian faunas  (anim...

TF阅读真题第690篇Egypt in Early World History

TF阅读真题第809篇Animal Locomotion

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...

TF阅读真题第687篇The Carboniferous Atmosphere

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...