2. 外语
  3. During the Colonial days, the Iroquois had an agricultural economy basing mainly on corn with supplementary crops of pumpkins, b

During the Colonial days, the Iroquois had an agricultural economy basing mainly on corn with supplementary crops of pumpkins, b

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问题 During the Colonial days, the Iroquois had an agricultural economy basing mainly on corn with supplementary crops of pumpkins, beans, and tobacco.
选项
答案basing—based
解析 译文：殖民时期易洛魁族人的农业经济以玉米为主，南瓜、大豆和烟草为辅。
分析：考查过去分词。分词短语作定语修饰economy，其作用相当于从句that is based mainly on…，故应用过去分词based而不用basing。
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