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Despite the rather _______ conditions required for its preservation, the evidence for glaciation during the late Proterozoic is found on every continent, suggesting that ice sheets were present throughout the globe.
- A.unusual
- B.hostile
- C.drastic
- D.stringent
- E.exacting
- F.complex
D,E显示答案
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以上解析由 考满分老师提供。
