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题目内容双击单词支持查询和收藏哦～
Researchers' use of charcoal particles in soil as a marker for human arrival in prehistoric North America is ________: fire was a part of the continent' s natural ecology long before humans appeared.
- A.unwise
- B.unnecessary
- C.fortuitous
- D.inessential
- E.ingenious
- F.misguided
A,F显示答案
以上解析由 考满分老师提供。
