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Descendants of the Maya(玛雅后裔)

Updated at: 2018-12-01 新题 预测 机经题

Descendants of the Maya living in Mexico still sometimes refer to themselves as the corn people. The phrase is not intended as metaphor. Rather, it’s meant to acknowledge their abiding dependence on this miraculous grass, the staple of their diet for almost nine thousand years. Forty percent of the calories some Mexican eats in a day comes directly from corn, most of it in the form of tortillas. So, when a Mexican says I am maize or corn walking, it is simply a statement of fact: The very substance of the Mexicans body is to a considerable extent a manifestation of this plant.
What can you conclude from the text about the diet of descendants of the Maya living in Mexico?