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题目内容双击单词支持查询和收藏哦～
Rocks of the Morrison Formation in the western United States yield many dinosaur fossils but few plant fossils. This apparent (i)___________ of plants leads some scientists to speculate that the region was once mostly barren. But others have (ii)__________, noting that the herbivorous dinosaurs there would have needed an abundant food supply.
- Blank(i)
- attrition
- dearth
- attenuation
- Blank(ii)
- abdicated
- acceded
- demurred
dearth , demurred 显示答案
以上解析由 考满分老师提供。
