Flooding is the most destructive weather disaster in the last hundred years. The ancient Egyptian civilization thrives in the d

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问题 Flooding is the most destructive weather disaster in the last hundred years.
The ancient Egyptian civilization thrives in the desert mainly because of the influence of ______ from the Nile.

选项

答案the expanding waters

解析 第4个小标题Sources of floods下Rainstorms部分的第2段第4、5句:The expanding waters would leave fertile silt all along the banks of the river,making the area ideal farming land once the river had sub- sided again.This is one of the main factors that allowed civilization to thrive in the Egyptian desert.空白处需要名词性成分。原文中第5句和本题中because前面的内容相同,而This则是指整个第4句的内容,即the expanding waters的作用和影响,故答案为the expanding waters。
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