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题库 / GMATAdvanced-SC-17
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.
which was not only nutritious but also was able to be
which not only was nutritious but also could be
which was not only nutritious but also it could be
not only nutritious but it could also be
not only nutritious but also able to be
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E选项：corn首先不能发出be able的动作，其次更不能说能够被dried.
去掉not only but also来看就是nutritious 和able 平行，错误，两者不平行
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