The pie charts illustrate the primary news sources preferred by three different age groups: teenagers, young adults, and elderly people. Overall, it is clear that while digital platforms dominate among younger generations, older people rely more heavily on traditional media like TV and printed newspapers.

Online news sites are the most popular choice for teenagers, accounting for 52% of their total usage. This figure drops to 33% for young adults and reaches a minimum of only 6% for the elderly. In contrast, TV is a significant source across all groups but peaks among old people at 42%, compared to 37% for teenagers and 35% for young adults.

Interestingly, printed newspapers are largely ignored by the youth, with only 7% of teenagers and 6% of young adults using them. However, this figure rises significantly to 29% in the oldest cohort. Finally, "Others" sources represent a quarter of the preferences for adults and the elderly, while being negligible for teenagers at only 4%.

In recent years, the integration of home robots into our daily lives has shifted from science fiction to reality. As people increasingly adopt these machines to manage household tasks, it is essential to consider both the benefits and the drawbacks they bring to our living spaces.

Using home robots has several advantages. First and foremost, they are incredible time-savers. Automated devices like vacuum cleaners and lawn mowers can handle repetitive chores, allowing homeowners to focus on work or leisure activities. Furthermore, home robots can enhance the quality of life for the elderly or people with disabilities by assisting with mobility or reminding them to take medication. This autonomy fosters a sense of independence and security within the home environment.

However, there are some disadvantages to owning home robots. High initial costs and maintenance fees can make them a luxury rather than a necessity for many families. There are also concerns regarding privacy and security, as smart robots often collect data and connect to the internet, potentially exposing users to hacking. Moreover, relying too heavily on technology may lead to a decrease in physical activity and basic life skills among younger generations.

In conclusion, while home robots may make lives easier and happier, there are certain problems as well. As technology continues to evolve, we must strike a balance between enjoying the convenience they offer and remaining mindful of the associated risks.

Problem-Solving Report: Addressing Energy and Water Waste at School

Report Title: Proposal to Reduce Energy and Water Waste in School Facilities
Submitted by: The Student Green Council
Date: December 25, 2025

1. Problem Identification
A significant amount of electricity and water is being wasted daily at our school. This primarily occurs when students leave lights on in unoccupied classrooms and fail to turn off faucets completely in the restrooms. This habitual waste leads to unnecessarily high utility bills for the school and contributes to the depletion of valuable natural resources and increased carbon emissions.

2. Proposed Solutions
To address this issue effectively, we propose a two-part strategy:

• Infrastructure Upgrade: We recommend the installation of motion-sensor lighting systems in all classrooms and common areas. Additionally, automatic, sensor-based faucets should be installed in all student restrooms. This technology ensures resources are only used when needed.
• Awareness and Education: A sustained awareness campaign is crucial. This will involve putting up clear, engaging posters near light switches and sinks, making regular announcements, and possibly holding a "Green Week" to educate students on the environmental and financial impact of conservation.

3. Expected Outcomes
Implementing these measures will directly reduce our school's utility costs and environmental footprint. More importantly, it will foster a culture of responsibility and sustainability among students, turning conservation into a daily habit. We believe these practical steps will make our school a greener and more cost-efficient place.

The line graph shows population trends in Viet Nam from 1960 to 2020. Overall, the urban population increased steadily over the period, while the rural population experienced a continuous decline.

In 1960, most Vietnamese people lived in rural areas, accounting for about 85% of the total population, whereas only 15% resided in cities. However, from 1960 to 1980, the proportion of rural inhabitants fell slightly to around 81%. From 1990 onwards, this decrease became more significant, dropping sharply to 70% in 2010 and further to 63% in 2020.

By contrast, the urban population rose throughout the same period. In 1960, it stood at just 15%, increasing gradually to 19% in 1980 and 20% in 1990. From 1990, urbanisation accelerated, with the figure reaching 30% in 2010 and peaking at 37% in 2020.