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TF阅读真题第783篇The European Agricultural Revolution in the Sixteenth Century
TF阅读真题第783篇The European Agricultural Revolution in the Sixteenth Century
TF阅读真题第890篇Equestrian Portraits in the Eighteenth and Nineteenth Centuries
重复时间 2024-06-18 2024-09-28 2025-02-22 Equestrian Portraits in the Eighteenth and Nineteenth Centuries It was common for European rulers from the eighteenth ...
TF阅读真题第926篇Sunspot Cycles
Sunspot Cycles Dark regions on the Sun, called sunspots, were studied in 1610 by Galileo, who turned the newly invented telescope on objects in the sky. A lively deba...
TF阅读真题第837篇Changes in Native American Food Production
Changes in Native American Food Production Changes in Native American Food Production 1 Native Americans expanded their sources of food in the centuries around the end of the fir...
TF阅读真题第744篇The K/T Boundary
In the late 1970s, several research groups were trying to determine the cause of the boundary between the geological layers corresponding to the Cretaceous and Tertiary periods, ab...
