Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-175

At the vast, distant edge of our solar system lies a mysterious region known as the Oort Cloud. It is not a planet or an asteroid, but a (21) __________ that scientists use to explain the origin of certain comets. This concept, named after astronomer Jan Oort, suggests that our solar system is surrounded by an enormous, spherical shell of icy objects, far beyond the orbits of even the most distant planets and dwarf planets.

Scientists theorize that the Oort Cloud is a remnant from the formation of the solar system. The idea was first (22) __________ in 1950 to explain why new comets with very long orbits continue to appear. The cloud itself is believed to be a massive sphere of trillions of individual icy bodies. If this theory is correct, it represents the most distant and largest-scale structure of our solar system.

The sheer distance to the Oort Cloud is difficult to comprehend; it is much farther than the asteroid belt or Pluto. Due to gravitational disturbances, sometimes one of these icy objects is knocked from its position, (23) __________ its long journey toward the Sun. Once in a blue moon, we might see one of these spectacular long-period comets from Earth, providing a rare glimpse into the materials from our solar system's beginnings.

Because it is so distant and the objects within it are so small and dark, we cannot see the Oort Cloud directly. Therefore, its existence is based on indirect evidence from studying comet orbits. An astronomer recently (24) __________ the cloud was so faint that it would be like trying to spot a tiny piece of coal in Tokyo from San Francisco. If a probe were to travel that far, it would take thousands of years to arrive with current technology.

Studying the theory of the Oort Cloud is essential for understanding the complete picture of our solar system. It holds clues about the early environment in which the Earth and other planets were formed. The continued study of comets originating from this distant region is a major key to unlocking the secrets of our cosmic neighborhood.

In an increasingly digital world, the traditional path to success is being redefined, especially for a new generation of "teenfluencers." These ambitious young individuals are leveraging platforms like YouTube and TikTok to establish powerful personal brands, often before they're old enough to vote. Sharing slices of their lives, hobbies, and insights, they rapidly accumulate followers and, in many cases, generate income. This phenomenon highlights a seismic shift in how influence is built and how careers can begin, proving that age is no barrier to global recognition in the online sphere.

Nowhere is this trend more evident than in Vietnam, where young creators have captivated millions. [I] A prime example is Jenny Huynh, whose relatable content has made her a household name among Vietnamese teenagers. [II] By candidly sharing her daily routines, fashion, and personal reflections, Jenny has amassed a massive following. [III] She exemplifies how a local voice gains national fame by genuinely connecting with an audience eager for relatable content. [IV]

The appeal of these young brand builders lies in their genuine connection. Unlike traditional celebrities, teenfluencers often feel like friends or older siblings, making their advice and entertainment more impactful. They offer a raw, unfiltered view of growing up, navigating school, friendships, and the everyday challenges faced by teenagers. This relatability fosters a strong sense of community among their followers, who feel understood and represented. It’s this intimate connection, rather than polished perfection, that forms the cornerstone of their rapidly expanding online empires, transforming casual hobbies into full-fledged businesses.

However, building a global brand at such a young age comes with unique complexities and pressures. For these young role models, life unfolds in the public eye, demanding constant awareness of online safety and their digital footprint. Every decision, every shared moment, can be scrutinized by millions, leading to immense pressure to maintain an image while still navigating the typical challenges of adolescence. The line between personal life and public persona blurs, raising questions about mental well-being, privacy, and the responsibilities of such influence at a tender age.

The rise of young achievers like Jenny Huynh isn't just a fleeting trend; it's a testament to the changing landscape of opportunity for young people. Her story, playing out on the very device in your hand, encourages us to consider the potential of digital platforms for creativity, entrepreneurship, and community building. It also prompts vital discussions about online responsibilities, the importance of authenticity, and balancing public ambition with personal growth in an increasingly connected world. These young entrepreneurs are not just building brands; they're shaping the future of digital interaction.