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TF阅读真题第849篇Azolla and Climate in the Arctic and Europe
TF阅读真题第849篇Azolla and Climate in the Arctic and Europe
TF阅读真题第882篇The Deforestation of England
The Deforestation of England Today's typical English countryside of rolling green fields and few trees did not evolve naturally. England was originally wooded. Forests of oak and ...
TF阅读真题第848篇Wool production in Europe on the high Middle Ages
TF阅读真题第848篇Wool production in Europe on the high Middle Ages
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 ...
