The large populations and impressive cultural achievements of the Aztecs, the Mayas, and the Incas could not have come about without corn, which was not only nutritious but also was able to be dried, transported, and stored for long periods.
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Awhich was not only nutritious but also was able to be
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Bwhich not only was nutritious but also could be
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Cwhich was not only nutritious but also it could be
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Dnot only nutritious but it could also be
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Enot only nutritious but also able to be
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正确答案: B