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题目内容双击单词支持查询和收藏哦～
The notion that prehistoric farming of Micronesia's Mariana Islands degraded the soils upon which savannas now occur is ______ by soil scientists, who attribute nutrient-poor savanna soils instead to long geological periods of tropical weathering.
- A.bolstered
- B.proposed
- C.contradicted
- D.elucidated
- E.revived
C显示答案
以上解析由 考满分老师提供。
