Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions from 31 to 36.
Cities around the world are evolving to meet the needs of growing populations. Urban planners are focusing on creating sustainable cities that are both environmentally friendly and efficient. One trend is the development of smart cities, which use digital technologies to optimize infrastructure and services. For example, smart traffic lights can reduce congestion by adjusting in real-time based on traffic flow, while sensors monitor energy consumption to improve efficiency.
Another important feature of future cities is the inclusion of green spaces. Parks and urban forests not only provide places for recreation but also help reduce pollution and lower temperatures. In addition, cities are investing in public transportation to reduce reliance on personal vehicles, which contributes to cleaner air and less traffic congestion.
However, creating sustainable cities is not without challenges. Funding is one issue, as the cost of building smart infrastructure can be very high. Additionally, balancing economic growth with environmental sustainability requires careful planning and cooperation between governments, businesses, and citizens.
