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学员疑问：《220篇上册》基础80篇第16篇第4题C选项我有点不好理解。
老师解答：题干句子 Growth brought with it increased variety in consumer goods, but not increased flexibility for the home economy in obtaining these goods and services.定位文章，前一句... so most of the fruits of economic growth did not increase the options available to the home economy to either produce the goods or services or purchase them in the market. （=多数经济增长的成果并没有给home economy在自己生产产品、提供服务或在市场上购买商品带来更多的选择）这就可以对应了C. it could not supply them by itself。
点评分析：这是典型的选项与原文的同意表达， supply them by itself（home economy能自己提供这些）是produce the goods or services 的同义表达
