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写作真题第201套（rs121）
综合写作： 写作真题第201套（rs121）听力音频 https://mp.weixin.qq.com/s?__biz=MzI2NzA4MDMwNA==&mid=2247522555&idx=3&sn=a212c9cb6de589db17a15ba4fae7f60a&scene=21#we...
TF阅读真题第878篇Sensory Ecology
Sensory Ecology Some of the most important sensory information animals have to process comes from other animals. Interactions between predators and prey, pare...
TF阅读真题第896篇Early Food Production in Africa
Early Food Production in Africa Farming appeared in Africa by 5000 B.c.E. Eventually, several different styles of food production developed. These variations were caused by ...
TF阅读真题第897篇How Fossils Map the Past
How Fossils Map the Past Only a tiny fraction of the organisms that have lived during the geologic past have been preserved as fossils.Normally the remains of an ani...
TF阅读真题第892篇Mars’s Disappearing Atmosphere
Mars's Disappearing Atmosphere For about the first billion years of its life, Mars was probably a watery planet. There are signs of past water in surface features, such as d...
TF阅读真题第893篇Erratics and Drift
Erratics and Drift In the nineteenth century, scientists theorized that glaciers (ice sheets) covered much of Earth's surface during an ancient very cold period known as the...
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889篇The Moon’s Origin
The Moon's Origin One of the earliest scientific theories about the Moon's origin postulated that Earth and its moon formed out of a dust cloud alongside one another, much a...
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
