The concept of the 'Anthropocene' has gained significant traction in geological and environmental circles, though its formal recognition as a new geological epoch remains contentious. Proponents argue that human activities, particularly since the mid-20th century, have left indelible markers in the stratigraphic record, such as radioactive isotopes from nuclear tests, microplastics, and elevated carbon dioxide levels. These markers, they contend, justify a distinct epoch following the Holocene. However, skeptics within the geological community question whether the Anthropocene meets the strict criteria for an epoch, which typically require a clear, globally synchronous boundary in rock strata. They also warn that formalizing the Anthropocene could oversimplify the complex, diachronous nature of human impacts across different regions, potentially undermining the precision of geological time scales. This debate highlights the tension between scientific classification and the broader societal implications of acknowledging humanity's profound influence on Earth's systems.
❓ According to the passage, what is a primary reason why some geologists oppose formally recognizing the Anthropocene as a new epoch?
A. A. Human impact markers are not distinct enough from natural processes.
B. B. The proposed boundary may not be globally synchronous and could oversimplify regional variations.
C. C. Radioactive isotopes and microplastics are too recent to be considered geological markers.
D. D. The concept has gained too much attention outside of geological circles.
✅ 正确答案
B. The proposed boundary may not be globally synchronous and could oversimplify regional variations.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first