Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-21

Our modern world runs on energy. From the lights in our homes to the cars on our streets, we need power for almost everything. But where does this energy come from? Generally, energy sources (21) __________ into two main groups: non-renewable and renewable. Understanding the difference between these two is crucial for our planet's future.

Non-renewable energy comes from sources that are limited in supply. These include fossil fuels like coal, oil, and natural gas, which formed over millions of years. Once we use up the available supply, there will not be any more for future generations. The burning of these fuels also has a significant negative effect on the environment, releasing harmful gases that contribute to air pollution and climate change.

On the other hand, renewable energy comes from sources (22) __________ naturally replenish themselves over a short period. Common examples are solar power from the sun, wind power, and hydropower from moving water. Because these sources are practically infinite, they are considered (23) __________. They produce very few harmful emissions, making them a much cleaner alternative for generating electricity.

The main difference lies in their sustainability and environmental impact. Renewable energy is much cleaner. However, the initial cost to build solar farms or wind turbines can be higher than building traditional power plants. Non-renewable sources are often cheaper to extract and use in the short term, but their environmental cost is far greater. Both types of energy play an important role in powering our world, but the balance is shifting.

As technology improves and awareness grows, the world is moving towards a more sustainable energy future. The global community is increasingly focused (24) __________ transitioning to cleaner energy to protect the environment for years to come. While this change will not happen overnight, it is a necessary step for the health of our planet.

Online quizzes have become a ubiquitous part of our digital lives, offering a fun distraction and an easy way to connect with friends. [I] The appeal is undeniable: a quick click, a few answers, and an instant, amusing insight into ourselves. [II] Yet, beneath this entertaining surface, a more complex and potentially concerning activity is frequently underway.

Many seemingly innocuous quizzes are not just for amusement; they serve as sophisticated data harvesting tools. Entities behind them design them to collect personal information. They gather details like your name, email, age, location, interests, and even access to your friend lists, depending on permissions granted. This valuable data is then aggregated, analyzed, and often sold to marketing firms or used directly for targeted advertising, helping businesses understand consumer behavior and reach specific demographics.

This global trend resonates strongly in Vietnam, with quizzes on platforms like Facebook immensely popular. Consider "Which Vietnamese city should you live in?" While questions seem harmless, completing a quiz often demands permissions, potentially granting access to your profile, email, or friend list. Local companies like Tiki could then use this data to send specific product recommendations, leveraging your quiz responses and network connections for targeted marketing. This makes the general concept feel very real and close to home.

For teenagers, the allure of these quizzes is strong. At 14 or 15, sharing a funny result with friends is a common way to interact and express personality. [III] Immediate gratification and social aspects often overshadow privacy implications. However, each quiz taken and permission granted adds to a growing digital footprint. This information, once collected, can be used for targeted ads, profiling, or even in less predictable ways, compromising online privacy.

Therefore, approaching every online quiz with a critical eye is crucial. Before clicking "Start" or granting permissions, pause to consider what information the quiz requests and why. Always try to read the privacy policy, if available, and be wary of requests for excessive access to your data or network. [IV] Your online privacy is a valuable asset, and protecting it means being mindful of the digital trails you leave, even when engaging in harmless fun.