Egypt Felled by Famine Even ancient Egypts mighty pyramid builders were powerless in the face of the famine that helped bring down their civilian around 2180 BC. Now evidence gleaned(搜集) from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blem — and the same or worse could happen today. The ancient Egyptians depended on the Niles annual floods to irrigate their crops. But any change in climate that pushed the African monsoons(季风) southwards out of Ethiopia would have diminished these floods. Dwindling(逐渐变少;使变小) rains in the Ethiopian highlands would have meant fewer plants to establish the soil. When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt, along with A. Because they once worked miracles. B. Because they were well-built. C. Because they were actually very weak. D. Because even they were unable to rescue their civilization. 更多"{{B}}第三篇{{/B}} Egypt F"的相关试题: [单项选择]{{B}}第三篇{{/B}}
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