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TF阅读真题第904篇The Nile River Valley
The Nile River Valley Though the verdant green course of the Nile Valley appears to be the very antithesis of the bleached Saharan sands through which it flows, these two contras...
TF阅读真题第888篇The Origin of Mars’s Moons
The Origin of Mars's Moons Mars has two tiny moons, Phobos and Deimos. The orbits of both these satellites are nearly circular and close to the planet: Phobos orbits...
TF阅读真题第885篇Periglacial Mounds
Periglacial Mounds Periglacial regions are cold-climate areas that are located near the margins of glaciers-permanent ice sheets covering parts of the Arctic and ot...
TF阅读真题第891篇The Early Iron Age
The Early Iron Age During the Bronze Age (roughly 3300-1200 B.C.E. in the Middle East), civilizations were limited in their use of iron. Most iron occurred not in ...
TF阅读真题第823篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第823篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第916篇New World and Old World Primates
New World and Old World Primates Evidence suggests that primates originated in the Old World and arrived in South America in a single migration. This perhaps occurre...
写作真题第263套（rs183）
综合写作： 写作真题第183套（rs103）听力音频 https://mp.weixin.qq.com/s?__biz=MzI2NzA4MDMwNA==&mid=2247522446&idx=8&sn=45bb358fadd2eb4dbedcac7682e7dba3&scene=21#w...
TF阅读真题第895篇Parental Care by Frogs
Parental Care by Frogs Only an estimated 10 percent of anuran (frog and toad) species provide any kind of parental care. But within this 10 percent there is very great diversity ...
