precious land. This translates to shorter commutes and entior access to services and amenties Secondly, vertical cities can be designed to be environmentally friendly. By concountrating people in a smaller area.resources like water and energy can be distribution more effectively Additionally, skyscrapers can incorporate sustainable features like groen roots and solar punels. However, vertical cities also come with challenges. One major concern is the potential for overcrowding and a lack of green space Living in a high rise apartment can feel isolating. and the absence of parks and gardens could negatively impact mental and physical well-being. Another challenge is infrastructure Building transportation networks and ensuring adequate emergency services for a city that stretches skywards requires careful planning and significant investment. Despite the challenges, vertical cities are a potential solution for accommodating a growing global population in a sustainable way. As technology advances and architects become more innovative, the design of these vertical communities will continue to evolve. addressing the concerns and maximizing the benefits. 71. What is the main idea of the passage? A. The history of urban development. B. The benefits and drawbacks of vertical cities C. The environmental impact of modern cities D. New technologies for building skyscrapers. 72. The word "sprawled in the first paragraph is closest in meaning to __ A. developed B. expanded C. deteriorated D. transformed 73. According to the passage, why are vertical cities becoming more popular? A. They offer a solution to limited land availability. B. They are more aesthetically pleasing than traditional cities C. They are cheaper to build and maintain D. They provide more privacy for residents. 74. All of the following statements are advantages of vertical cities EXCEPT __ A. They allow for more efficient resource distribution B. They can integrate eco-friendly sources of energy C. They accommodate a denser population with less land D. They offer a wider variety of housing options 75. What is a potential drawback of vertical cities according to the passage? A. They are more susceptible to natural disasters. B. They are likely to hecome outdated quickly. C. They require less maintenance than traditional buildings. D. They may lack green spaces and contribute to a feeling of isolation. 76. The word "that in the third paragraph refers to __ . A. transportation networks B. emergency services C. a city D. building transportation network 77. What can be inferred from the passage about the future of vertical cities? A. They will likely become the dominant form of urban development.