The surveys of ERS help low-income households develop economizing practices. The nutritional quality of food product varies in

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问题 The surveys of ERS help low-income households develop economizing practices.
The nutritional quality of food product varies in accordance with ______ .

选项

答案price differences

解析 参见“The Main Economizing Practices”小节最后一句话:Although quality differences...often contribute to prices differences,differences in nutritional quality are also evident.(食品营养含量的不同对价格的影响还是很明显的。)in accordance with与……一致。
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