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题目内容
In a major________ for bat populations in the United States, on average 90 percent of the hibernating bats in four important caves and mines in New York died in the space of one year.
- Aachievement
- Breversal
- Cventure
- Dcalamity
- Eundertaking
- Fdisaster
D,F显示答案
以上解析由 考满分老师提供。