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Despite hypotheses ranging from armed conflict to climate change, the abandonment of more than 600 Pueblo cliff dwellings in Mesa Verde by A.D. 1300 still puzzles archaeologists. Researchers analyzing refuse from one Pueblo community found remains of maize-a Pueblo crop-in 44 percent of samples from years when the community flourished, but in only 10 percent of samples from years near the time of depopulation, while the remains of wild plants increased significantly. Bones found in the samples showed that the consumption of domesticated turkeys-which were fed maize-decreased from 55 to 14 percent, while there was a marked increase in wild-animal bones. These data suggest that near the end of the site`s occupation, villagers experienced substantial food shortages and adopted hunting-and-gathering strategies to compensate for crop failure.
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当前版本由 长颈鹿在哪里呀 更新于2019-04-06 17:15:39 感谢由 长颈鹿在哪里呀 对此题目的解答所做出的贡献。
首先我们可以在首句看出文章想要讨论的内容 the
abandonment of more than 600 Pueblo cliff dwellings in Mesa Verde by A.D. 1300
still puzzles archaeologists，即the
abandonment of more than 600 Pueblo cliff dwellings，那么需要抓住后文都是在解决这个puzzle。而Researchers analyzing refuse from one Pueblo community found
remains of maize-a Pueblo crop-in 44 percent of samples from years when the
community flourished, but in only 10 percent of samples from years near the
time of depopulation从此句可以看出文章这个puzzle与crop的多少有关，那么A选项符合这个解释
当前版本由 长颈鹿在哪里呀 更新于2019-04-03 17:50:59 感谢由 长颈鹿在哪里呀 对此题目的解答所做出的贡献。
这道题可以定位回到文中最后一句These data suggest that near the end of the site`s occupation, villagers experienced substantial food shortages and adopted hunting-and-gathering strategies to compensate for crop failure.所以其实与crop的可获得性是有关的，应该要选A。
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