Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-126

The respiratory system is complex, but one of its most important parts is a muscle that many people don't think about: the diaphragm. The diaphragm is a large, dome-shaped muscle that is located just below the lungs, separating the chest from the abdomen. Because of its position, (35) __________ plays a crucial role in the mechanics of breathing. It works tirelessly every second of our lives, making it essential for survival.

When you breathe in, or inhale, your diaphragm contracts and moves down. This movement increases the space inside your chest cavity. This causes a change in pressure that allows your lungs to expand and (36) __________ air. The (37) __________ of the lungs is a direct result of the diaphragm creating more room for them. It is an active process that requires muscular effort.

The opposite happens when you breathe out, or exhale. The diaphragm relaxes and goes up to its original dome shape. As it moves upward, it (38) __________ the air out of the lungs, reducing the space in the chest. For most people, exhaling is a passive process, meaning it doesn't require as much effort. It's often a (39) __________ automatic process than inhaling.

What makes the diaphragm fascinating is its dual-control system. Most of the time, its movement is involuntary, controlled by the part of the brain that manages automatic functions like your heartbeat. However, you (40) __________ also consciously control it, which is how you can hold your breath or take a deep breath on purpose. (41) __________ does it work without our thought, but we can also command it when needed.

(42) __________, the diaphragm is the powerful engine that drives our breathing. Its simple yet effective up-and-down movement, contracting to pull air in and relaxing to push it out, is essential for life. This constant, rhythmic action ensures our body gets the oxygen it needs to function, making the diaphragm a true unsung hero of the human body.

Every year, a familiar scene unfolds across Vietnam. Long queues form outside electronics stores like FPT Shop and The Gioi Di Dong, media outlets buzz with excitement, and social media is flooded with 'unboxing' videos. The object of all this attention is the newly released iPhone. But why does a simple mobile phone, year after year, generate such immense hype? The answer is complex, involving psychology, marketing, and the human desire for social standing.

At the heart of the matter is the concept of a 'status symbol'. A status symbol is an object that suggests its owner's high social or economic status. This isn't a new idea; for centuries, people have used luxury cars, designer watches, or expensive art to signal their wealth and success. In the 21st century, the iPhone has arguably become the most widespread digital status symbol. It’s a form of conspicuous consumption, an act of spending money on luxury goods to publicly display economic power. Owning the latest model communicates more than just having a good phone; it signals that one is modern, successful, and financially comfortable.

A significant part of the iPhone's appeal lies in Apple's masterclass in marketing. They have expertly crafted a brand image associated with innovation, minimalist design, and premium quality. This creates a powerful sense of desire and exclusivity. Furthermore, Apple has built a seamless 'ecosystem' where the iPhone works perfectly with other Apple products like MacBooks, iPads, and the Apple Watch. Once a user enters this ecosystem, it becomes difficult and inconvenient to leave, fostering incredible brand loyalty and ensuring that many users will upgrade to the newest iPhone simply to stay within this integrated digital world.

For teenagers, these social and marketing dynamics are often amplified within their own communities, particularly at school. In a high school environment, where everyone is trying to figure out their identity and fit in, external symbols can become very important. Having the newest iPhone can be a non-verbal way of communicating that you are 'cool,' up-to-date, and part of the popular group. This peer pressure, whether spoken or unspoken, is a powerful motivator for many young people to persuade their parents to purchase the latest model.

In conclusion, the iPhone's position as a cultural phenomenon is not accidental. It is the result of a powerful combination of its role as a modern status symbol, brilliant and persuasive marketing, and the strong influence of social pressure, especially among young people. The annual frenzy is less about the technological upgrades and more about what the device represents in our interconnected, image-conscious world.