The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were marked by natural events such as ice ages or asteroid impacts, the Anthropocene is characterized by anthropogenic markers, including radioactive isotopes from nuclear tests, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Some scientists argue that the changes are so profound and rapid that they warrant a distinct stratigraphic boundary, while others contend that human influence, though substantial, has not yet produced a globally synchronous and permanent signal in the rock record. This debate highlights the challenge of integrating human history with deep geological time, forcing a reconsideration of how we define and divide the planet's history.
❓ According to the passage, what is the main reason for the controversy over formally recognizing the Anthropocene as a new geological epoch?
A. A. The proposed markers of the Anthropocene are not permanent or globally consistent enough.
B. B. Most geologists believe human impact is too trivial to affect geological formations.
C. C. The term 'Anthropocene' was invented by non-scientists and lacks scientific basis.
D. D. The changes caused by humans are too slow to be observed in the rock record.
✅ 正确答案
A. The proposed markers of the Anthropocene are not permanent or globally consistent enough.
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