environment than people in the countryside. Their roads, sewers, and power lines need fewer resources to build and operate. City apartments require less energy to heat, cool, and light. Most importantly, people in cities drive less so they produce fewer greenhouse gases per person.

So it’s a mistake to see urbanization as evil; it’s a natural part of development. The challenge is how to manage the growth.

4. What is Paragraph 1 mainly about? A. The history of modern cities. B. Changes taking place within cities. C. How cities have grown over time. D. Why modern cities are changing.

5. How have experts’ attitudes towards cities changed in recent decades?

A. They now view the weaknesses as strengths. B. They no longer see city-riving as attractive. C. They accept city life in spite of its problems. D. They think city-riving provides more benefits. 6. Which of the following would Edward Glaeser agree