The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's systems. Unlike earlier epochs, which were delineated by natural events such as ice ages or asteroid impacts, the Anthropocene is characterized by markers like radioactive isotopes from nuclear tests, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human activity has not yet produced a sufficiently distinct and permanent stratigraphic signature to justify a new epoch, whereas proponents emphasize the unprecedented scale and speed of environmental change. This debate reflects broader questions about how science categorizes time and the role of human agency in shaping planetary history.
❓ According to the passage, what is a primary reason for the controversy over the Anthropocene?
A. A. The proposed epoch lacks clear markers of human impact.
B. B. Some scientists question whether human effects are distinctive and lasting enough.
C. C. The Anthropocene is based solely on natural events like ice ages.
D. D. There is no evidence of nuclear tests or plastic pollution in geological records.
✅ 正确答案
B. Some scientists question whether human effects are distinctive and lasting 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