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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927篇Degradation and Erosion of Soil
Degradation and Erosion of Soil Land without soil can support only very small primitive plants such as lichens and mosses that can cling onto a rock surface. The rest of the worl...
TF阅读真题第838篇Germanic Invasions of the Roman Empire
TF阅读真题第838篇Germanic Invasions of the Roman Empire
TF阅读真题第745篇Centralized Societies: Archaeological Evidence
When studying an archaeological site, archaeologists must first try to understand how the society that lived there was organized. Some societies are centrally organized, and...
TF阅读真题第801篇Spectroscopy and the Substance of Stars
TF阅读真题第801篇Spectroscopy and the Substance of Stars
TF阅读真题第871篇Carbon Dioxide Levels in the Ocean
题目： Carbon Dioxide Levels in the Ocean The concentration of carbon dioxide gas (CO2) is rising in the atmosphere, and some of this CO2 is taken up by ocean surface waters. To ...
写作真题第220套（rs140）
综合写作： 写作真题第220套（rs140）听力音频 https://mp.weixin.qq.com/s?__biz=MzI2NzA4MDMwNA==&mid=2247522646&idx=2&sn=53dbb4dd42ea2b93e84521f827a69eae&scene=21#...
TF阅读真题第951篇A Cat’s Sense of Smell
A Cat's Sense of Smell 题目： Cats have sensitive noses that they use for a variety of purposes, including finding mates and identifying the territory of other cats...
