第2题: [单项选择]What does "them" refer to in the sentence "It sent them streaming westward into the wilderness after their predecessors to raise still more children who wanted still more land" A. Urban dwellers. B. Dollars and cents. C. Yearners. D. Predecessors. 参考答案:C 答案解析:[解析] 见最后一段The obsession brought shiploads of yearners every week to Boston… and Savannah。从这句话可以看出the