Maize was first domesticated(喜歡家庭生活的, 被訓養的) in Mexico nearly nine-thousand years ago from a wild grass.
It was assumed(假設的) it took a good few thousand of years to reach South America, where it is an important part of today's diet(飲食).
But corn cobs(玉米棒) found at ancient(古代) archaeological(考古) sites (遺址)in northern Peru indicate(說明, 表示, 意味著) it was being eaten by people living there as long as 6,700 years ago.
And, tests carried out on the ancient cobs suggest it was being used in more varied(多樣) ways than previously(之前) believed(相信的): namely(即使) for making flour(麵粉) and popcorn!
This would mean that in some areas people were making popcorn even before they had pottery(陶器). How exactly they went about making it, especially if they lacked(缺乏) pottery, is not clear.
Even less clear is just when they would have eaten it, in an age before movies.
It was assumed(假設的) it took a good few thousand of years to reach South America, where it is an important part of today's diet(飲食).
But corn cobs(玉米棒) found at ancient(古代) archaeological(考古) sites (遺址)in northern Peru indicate(說明, 表示, 意味著) it was being eaten by people living there as long as 6,700 years ago.
And, tests carried out on the ancient cobs suggest it was being used in more varied(多樣) ways than previously(之前) believed(相信的): namely(即使) for making flour(麵粉) and popcorn!
This would mean that in some areas people were making popcorn even before they had pottery(陶器). How exactly they went about making it, especially if they lacked(缺乏) pottery, is not clear.
Even less clear is just when they would have eaten it, in an age before movies.
this report is from bbc learning english
http://www.bbc.co.uk/worldservice/learningenglish/language/wordsinthenews/2012/01/120123_witn_popcorn.shtml
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