The phenomenon of urban heat islands (UHIs) has garnered significant attention in recent decades due to its implications for public health and energy consumption. UHIs occur when metropolitan areas experience higher temperatures than surrounding rural regions, primarily because of the prevalence of concrete and asphalt, which absorb and re-emit solar radiation more effectively than natural landscapes. Additionally, anthropogenic heat from vehicles and air conditioning systems exacerbates the effect. Mitigation strategies, such as increasing vegetative cover and implementing reflective roofing materials, have been proposed; however, their efficacy varies with local climate and urban morphology. Recent studies suggest that a combination of green infrastructure and policy interventions, including building codes that mandate cool roofs, may yield the most substantial reductions in peak summer temperatures, thereby alleviating heat-related mortality and reducing cooling demands.
❓ Theo đoạn văn, nguyên nhân chính của hiệu ứng đảo nhiệt đô thị là gì?
A. A) Việc sử dụng ngày càng tăng các hệ thống điều hòa không khí ở khu vực đô thị
B. B) Sự hấp thụ và tái phát xạ bức xạ mặt trời bởi vật liệu xây dựng đô thị
C. C) Thiếu thảm thực vật ở các vùng nông thôn
D. D) Mật độ dân số ở thành thị cao hơn so với khu vực nông thôn
✅ 正确答案
B) The absorption and re-emission of solar radiation by urban construction materials
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)
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