题目内容

4. As celebrities (名人) become more and more experienced at the market,they        their production scale rapidly,covering almost all the products of daily life.

   A. manage   B. command

   C. expand   D. calculate

4. C句意为:"随着名人对市场越来越有经验,他们往往能快速地扩大生产规模,其产品几乎可以涵盖日常生活的每个领域。"expand意为"扩大,增加",符合句意。

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