IELTSNgheCâu hỏi luyện tập21

The correct answer is A because cool roofs work by reflecting more sunlight from the top of buildings instead of storing it as heat.

Associated Text:
The key thing is that the roof surface sends a larger share of incoming sunlight back into the atmosphere instead of storing it as heat.

The correct answer is B because green roofs use soil and plants to hold rainwater, and evaporation from this moisture cools the roof surface.

Associated Text:
The soil layer and the plants hold some rainwater, and then evaporation from that moisture cools the roof surface.

The correct answer is C because street trees mainly help pedestrians by providing shade and releasing moisture at street level.

Associated Text:
Their main effect at pedestrian level is shade, and the leaves also release moisture, so the air feels less harsh in summer.

The correct answer is D because permeable paving lets water pass down through the surface instead of running straight into drains.

Associated Text:
Water can pass down through the surface instead of running straight into drains.

The correct answer is E because low-traffic zones reduce heat released by engines and slow-moving traffic.

Associated Text:
they cut the heat released by engines and slow moving traffic.