2. 外语
  3. __________(只有当新的淘金人潮进入这片区域后) did gold land become troubling scarce.

__________(只有当新的淘金人潮进入这片区域后) did gold land become troubling scarce.

admin2010-07-24  74
问题  __________(只有当新的淘金人潮进入这片区域后) did gold land become troubling scarce.
选项
答案Only after new waves of gold miners entered the fields
解析 “淘金人潮”waves of gold miners，“只有”only，句子谓语用了过去时，所以，此处enter也用了相应的形式entered。
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大学英语四级

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