Reading Comprehension · Question 8 · Hard
Which of the following best describes the author's view of the remedies discussed?
On a summer afternoon, the centre of a large city can be several degrees warmer than the farmland just beyond its edge. Scientists call this the urban heat island effect. Concrete, asphalt and brick absorb sunlight during the day and release the stored heat slowly after sunset, so cities cool far less at night than the countryside does. Air conditioners add to the problem by pumping warm air out of buildings onto the streets, and the scarcity of trees means there is little shade or evaporation to cool the air. The consequences are not merely uncomfortable. Hot nights prevent the body from recovering from daytime heat, which is why heatwaves are especially dangerous for elderly residents of crowded neighbourhoods. Some remedies are surprisingly simple. Painting roofs white reflects a large share of incoming sunlight, and rooms beneath such roofs can be a few degrees cooler. Planting trees along streets and protecting existing lakes also help. None of these measures can reverse the effect entirely, but together they can make the difference between a hot night and a deadly one.
- They are too expensive to be worth trying
- They are useful but cannot solve the problem completely
- Together they will eliminate the heat island effect
- They matter only for comfort, not for safety
Answer and explanation
Answer: B. They are useful but cannot solve the problem completely
Explanation: The final sentence says the measures cannot reverse the effect entirely but can make the difference between a hot night and a deadly one.
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