❓ 题目 According to the passage, what is the main reason some geologists criticize the proposal to formalize the Anthropocene as a new epoch?
- A. A. The markers of human impact are not permanent enough to appear in the rock record.
- B. B. The 'Great Acceleration' began too recently to be compared with other epochs.
- C. C. The human footprint may not be sufficiently distinct or globally synchronous.
- D. D. The Holocene already encompasses all significant human-induced changes.