What is the topic of the passage? [br] Where was ice used after the Civil War?In

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问题 What is the topic of the passage? [br] Where was ice used after the Civil War?

选项

答案 In refrigerating freight cars and households.

解析 题目询问在内战后冰被用在哪些地方。根据题干关键词Civil War可以定位至文章第一段第四句话,由... ice was used to refrigerate freight cars... into household use 可知问题的答案。
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