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题目内容
Despite their extensive efforts to determine the mode of oil (i)_____, scientists still have not (ii)_____ the process by which oil is produced.
- Adispersion-excluded
- Bsynthesis-rejected
- Ccreation-investigated
- Drecovery-condoned
- Egenesis-established
E显示答案
以上解析由 考满分老师提供。