❓ 题目 According to the passage, which of the following is a reason why critics oppose the formal recognition of the Anthropocene as a geological epoch?
- A. A. Human activities have not left any permanent markers in geological records.
- B. B. The proposed markers are not synchronous across different regions of the world.
- C. C. The Anthropocene began too long ago to be considered a new epoch.
- D. D. The term has already been widely used in public discourse and policy.