Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-124

Have you ever wondered why structures like cranes or bridges are so incredibly (21) __________? The secret often lies in a simple shape: the triangle. In structural engineering, not all shapes are equal. The triangle has a unique property that makes it essential for building stable structures, which is why engineers rely on it.

To understand this, first consider a square. If you push on a square frame, its corners bend easily, and it distorts into a diamond shape because its angles are not fixed. This tendency to deform can lead to structural instability. Due to this weakness, squares are less reliable for bearing heavy loads without extra support.

A triangle behaves very differently. When force is applied, it is distributed along the sides. This inherent rigidity makes the triangle the most stable geometric shape for building. Its fixed angles mean the structure resists deforming under pressure. Unlike a square, its angles (22) __________ simply change to absorb force; the sides must either compress or stretch.

This principle is visible everywhere. The sides of the triangle work together to distribute the load. This is why you see networks of triangles in bridges and roof trusses. These structures (23) __________ the ability to support enormous weight over long distances, ensuring safety. Even bicycle frames use triangles to create a strong, lightweight body.

Not only is this principle important for bridges, but it is also crucial for everything from radio towers to stadium roofs. The strength lies not in the material alone, but in the shape itself. (24) __________, the simple triangle is a cornerstone of safe and efficient engineering design.

Imagine your city's forgotten walls, once drab, suddenly bursting with vibrant colors and captivating stories. This is the transformative power of artistic visionaries like "The Wall Whisperer," renowned for turning urban canvases into breathtaking public art. He doesn’t seek pristine galleries; instead, he sees immense potential in overlooked spaces. [I] This belief allows him to create impactful art right where people live, transforming streetscapes into extraordinary open-air galleries that challenge our notion of where art belongs.

His creative process involves more than just paint; it’s about listening to the city and giving voice to its forgotten corners. Each mural becomes a dialogue, reflecting local culture, history, or community dreams. What was once a drab surface transforms into a source of pride, a landmark, or a backdrop for photos. [II]

Revitalizing urban spaces through public art is a powerful global phenomenon. Vietnam offers a brilliant local example with Hanoi’s Phùng Hưng Street. Its old railway arches, once ignored, underwent a remarkable transformation. A collaborative project between Vietnamese and Korean artists reimagined them into a stunning mural street. Depicting scenes of old Hanoi life, traditional customs, and children's games, these vibrant artworks breathed new life into the area. [III] It quickly became a beloved destination for both tourists and locals, rediscovering their city’s heritage.

The story of such visionaries, like those behind Phùng Hưng Street, directly challenges your perception of art. It’s not just classical paintings or sculptures confined to museums. Instead, it’s dynamic, large-scale works brightening your route to school or the market. For a 14-15 year old, this shows art can be an active, living part of your daily experience, enriching your community. [IV] These murals foster identity and belonging, reminding us that creativity can transform both physical spaces and people's spirits.

Ultimately, the work of these "wall whisperers" proves artistic expression thrives beyond traditional boundaries. It’s a testament to how creative vision breathes life into neglected urban corners, making cities more vibrant, engaging, and personal. This public art doesn't just decorate; it educates, unites, and inspires. It encourages us to look closer at our surroundings, seeing beauty and potential where others see decay. This movement transforms how we view art, making it an accessible, vital part of our collective everyday life and shared community space.