Living in a smart city has both advantages and disadvantages. On the one hand, smart cities make life more convenient. Modern technology helps improve transport, healthcare, and education. They also use energy efficiently and reduce pollution. On the other hand, the cost of living in smart cities is usually high. In addition, people’s personal data can be collected and used without permission, which causes privacy problems. In conclusion, living in a smart city is comfortable and modern, but it also has some challenges that people should think about carefully.

In today's digital world, the issue of teenagers' screen time has become a central concern for many parents. While screens offer educational and social opportunities, the potential for overuse is significant. In my opinion, parents should strictly limit their teenagers' screen time to ensure their well-being and academic success. The primary reason for stricter limits is the direct impact excessive screen time has on a teenager’s life. Firstly, it significantly reduces the time available for crucial activities like homework, studying, and pursuing hobbies. When hours are spent scrolling through social media or playing video games, academic performance is likely to suffer. Secondly, and perhaps more importantly, too much screen time is detrimental to a teenager’s health. The constant strain from looking at a screen can damage eyesight. Furthermore, a sedentary lifestyle linked to excessive screen use can lead to weight gain and other health problems, disrupting the healthy development of a young person. However, it is also important to acknowledge that not all screen time is equal. Opponents of strict limits argue that the quality of screen time is more important than the quantity. Teenagers can indeed learn a lot of useful knowledge and necessary skills through online educational games, videos, and research. Completely restricting access would prevent them from leveraging these valuable resources. Moreover, overly strict limits might cause resentment, leading to a gap between teenagers and their parents, as teens may feel their parents do not trust or understand them. Despite these valid points, the risks associated with unrestricted screen use outweigh the benefits. A balanced approach that involves strict but reasonable limits is necessary. This ensures teens have time for essential offline activities and health-promoting habits, while still allowing for productive, educational, or supervised social screen time. In conclusion, while the digital world offers many learning opportunities, the necessity of safeguarding a teenager's health and academic focus remains paramount. Therefore, parents should implement clear and consistent limits on screen time. By doing so, they can help their teenagers grow into balanced, healthy, and successful adults.