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TF阅读真题第749篇Food Production in the Early Modern World
Starting in the sixteenth century, the population of Eurasia (the combined continental landmass of Europe and Asia) began an upward surge that, while the result of many factors, ow...
TF阅读真题第698篇European Cities and the Rise of Commerce
TF阅读真题第698篇European Cities and the Rise of Commerce
TF阅读真题第760篇Bird Molt
Molt is the process in which birds shed feathers and replace them by growing new ones. It is a costly effort that typically follows breeding in the warmest months of the year and p...
TF阅读真题第738篇Sauropods and Conifers
The sauropod dinosaurs were gigantic, long-necked herbivores (plant eaters) that flourished during the Jurassic period (201-145 million years ago). At the same time that the saurop...
TF阅读真题第766篇The River Nile in Ancient Egypt
The special character of the Nile, which made it central to ancient Egyptian culture, was its annual inundation (flooding). During June the river began to rise, and a quantity of g...
