The phenomenon of urban heat islands (UHIs) has garnered increasing attention in climate research due to its significant implications for energy consumption and public health. UHIs occur when metropolitan areas experience higher temperatures than their rural surroundings, primarily because of the prevalence of dark, heat-absorbing surfaces such as asphalt and rooftops, coupled with the scarcity of vegetation. Recent studies indicate that the intensity of UHIs can be mitigated through the implementation of green infrastructure, including green roofs and urban parks, which enhance evapotranspiration and provide shade. However, the effectiveness of such measures varies with regional climate conditions and urban morphology, suggesting that a one-size-fits-all approach is inadequate. Consequently, policymakers are urged to adopt localized strategies that integrate climate data with urban planning to optimize thermal comfort and reduce energy demands.
❓ According to the passage, what is a key limitation of green infrastructure in mitigating urban heat islands?
A. A. It is too expensive for most cities to implement.
B. B. Its effectiveness depends on local climate and urban structure.
C. C. It increases energy consumption in the long term.
D. D. It has no impact on public health outcomes.
✅ 正确答案
B. Its effectiveness depends on local climate and urban structure.
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