The concept of 'tipping points' in climate science refers to critical thresholds in Earth's systems that, once crossed, lead to significant and often irreversible changes. These thresholds are not merely linear extensions of gradual warming; rather, they represent abrupt shifts in state, such as the collapse of the West Antarctic Ice Sheet or the dieback of the Amazon rainforest. Recent research emphasizes that these tipping points are interconnected, meaning that crossing one may trigger others, creating a cascade effect. This interconnectedness poses a major challenge for mitigation efforts, as it implies that even if global temperatures are stabilized, the risk of crossing additional thresholds may persist. Consequently, scientists argue for urgent and preemptive action to avoid triggering these self-reinforcing feedback loops, which could fundamentally alter the planet's climate trajectory.
❓ According to the passage, what is a key implication of the interconnectedness of tipping points?
A. A) Stabilizing global temperatures will automatically prevent all tipping points.
B. B) Crossing one tipping point may lead to a domino effect, making mitigation more difficult.
C. C) Tipping points are linear and predictable, so they can be easily managed.
D. D) The collapse of the Amazon rainforest is the most urgent tipping point to address.
✅ 正确答案
B) Crossing one tipping point may lead to a domino effect, making mitigation more difficult.
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