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题目内容
If giant X-ray flares churn circumstellar disks enough to keep newborn planets, such as Earth once was, from spiraling into their suns, it would be an ironic twist on our conception of X-ray flares as _____.
- Adangerous
- Bpredictable
- Cancient
- Dephemeral
- Eperilous
- Fforeseeable
A,E显示答案
以上解析由 考满分老师提供。