Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-55

A cantilever is a structural beam (35) __________ is supported at only one end. This unique characteristic allows it to project horizontally into space without any vertical support at its free end. The fixed end, where it connects to a main structure like a wall, must be extremely rigid to provide all the necessary stability for the entire beam. This simple idea is a cornerstone of modern construction and design.

The core (36) __________ of a cantilever is that this single point of support must counteract all forces acting upon it. This fixed connection resists both the downward pressure from gravity and the upward bending force that occurs along the beam's length. Engineers must calculate these forces very carefully to ensure the structure is safe and does not fail under pressure.

We see cantilevers in many places. A common example is a balcony (37) __________ to the side of a building. It provides outdoor space without needing columns underneath. (38) __________, airplane wings are excellent examples; they are fixed to the plane's body at one end and must support the entire aircraft during flight.

The success of any cantilever design depends on its ability to handle different forces. This includes the beam's own weight and any additional weight placed (39) __________ it, such as cars on a bridge or snow on a roof. This combined weight is known as the structural (40) __________. The materials used must therefore be selected for their exceptional strength.

In conclusion, the cantilever is a fundamental concept in engineering. Though it appears simple, its application requires precise calculations to ensure safety. Its ability to create long, unsupported spans makes it an essential tool for architects, allowing for (41) __________ creative and functional designs in everything from skyscrapers and bridges to something as simple (42) __________ a bookshelf.

In today’s hyper-connected world, a new type of celebrity has emerged: the ‘teenfluencer’. These are young individuals, often teenagers, who have built massive followings on platforms like TikTok, YouTube, and Instagram. They aren't traditional movie stars or singers; instead, they gain fame by sharing aspects of their daily lives. In Vietnam, a prominent example is Jenny Huynh, who captivated millions of young followers with her vlogs. This phenomenon is no longer a distant trend but a present-day reality, raising important questions about fame, work, and growing up in the digital age.

So, how do these young creators achieve such widespread popularity? The key often lies in relatability. They create content about topics that resonate with their peers, such as school life, fashion, comedy sketches, or personal hobbies. Success is not about having a professional studio or expensive equipment; it is about creating content that feels authentic and genuine. By sharing their true personalities and experiences, teenfluencers build a strong, trust-based connection with their audience, who see them not as distant stars but as friends they can look up to.

The benefits of this early success can be significant. Many teenfluencers earn a substantial income through brand partnerships, advertisements, and merchandise, achieving financial independence at an age when most of their peers are receiving pocket money. Beyond the financial aspect, they develop valuable real-world skills in marketing, video production, negotiation, and public speaking. This hands-on experience in building a personal brand is an education in itself, boosting their confidence and preparing them for future entrepreneurial ventures.

However, this digital stage comes with a dark side. The pressure to constantly create engaging content and maintain a perfect online image can be immense. Unlike traditional jobs, being a teenfluencer means their life is always on display, leading to a significant loss of privacy. They are exposed to negative comments and constant public judgment, which can be damaging to their mental health. Growing up under this intense spotlight means navigating the normal challenges of adolescence while also being a role model to millions, a responsibility that can be overwhelming.

Ultimately, the life of a teenfluencer is a double-edged sword. It offers extraordinary opportunities for creativity, financial success, and personal growth. Yet, it also presents unique and serious challenges related to mental well-being, privacy, and the pressures of modern fame. For today’s teenagers, understanding this balance is crucial, whether they dream of becoming a creator or are simply consumers of the content that fills their social media feeds.