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题目内容
The theory that the 1908 Tunguska event was the explosion of a cosmic body in the sky over Siberia is _____: no one has yet found fragments of the object or any impact craters in the affected region.
- Along-standing
- Bindisputable
- Cplausible
- Duncontested
- Eunproven
E显示答案
以上解析由 考满分老师提供。