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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