Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-142

In the vast, colorful world of coral reefs, many creatures form special partnerships to survive. One of the most famous examples of this is the relationship between the clownfish and the sea anemone. They live together and help each other in a partnership that benefits them both. This cooperation is a fascinating display of life in the ocean.

The sea anemone looks like a beautiful flower, but it is actually a dangerous animal. Its tentacles are covered in stinging cells that it uses for (35) __________ against predators and to catch its food. For most small fish, swimming too close to an anemone means certain death. The powerful sting paralyzes them quickly.

However, the clownfish is different. It is immune to the anemone’s poison. (36) __________ allows it to swim freely among the dangerous tentacles. In fact, this partnership is perhaps the (37) __________ known example of mutualism in the sea. The anemone (38) __________ a safe home for the clownfish, protecting it from larger fish that want to eat it. Other fish simply (39) __________ not get close without being stung.

In return, the clownfish is not just a lazy guest. It helps the anemone by cleaning its tentacles and eating any leftover food scraps. The clownfish also scares away butterflyfish, which are known to eat anemones. The clownfish has a special layer of (40) __________ on its skin that prevents the anemone from stinging it. Rarely (41) __________ an anemone host a fish so comfortably and safely.

(42) __________, the relationship between the clownfish and the sea anemone is a perfect example of how two very different species can depend on each other for survival. The clownfish gets a home and protection, and the anemone gets a cleaner and a guard. They are a classic team, working together in the deep blue sea.

In any major Vietnamese city, from Hanoi to Ho Chi Minh City, a common sight is a teenager paying for their trà sữa (bubble tea) or a tourist buying a bánh mì from a street vendor. What’s changing is how they pay. Instead of handing over colourful polymer notes, they are increasingly scanning a small, pixelated square with their smartphone. This rapid shift to QR code payments, facilitated by 'super-apps' like MoMo and ZaloPay, raises a fascinating question: is physical money slowly becoming a relic of the past in Vietnam?

The primary driver behind this digital payment explosion is convenience. For customers, it means no more fumbling for the right amount of cash or waiting for change. A quick scan is all it takes. For vendors, even small family-run stalls, the benefits are significant. Setting up a QR code is practically free and instantaneous. It allows them to track daily income easily without manual bookkeeping and reduces the risks associated with handling large amounts of cash. This ease of use for both parties has made QR codes a ubiquitous feature of Vietnam's modern economy, seen everywhere from high-end boutiques to humble street food carts.

This phenomenon is not happening in isolation. It is part of a broader global trend towards cashless societies and aligns with the Vietnamese government's own vision for a digital economy. The government actively encourages this digital transformation, as it can lead to greater financial transparency and stimulate economic growth. This official support creates a favourable environment for tech companies to innovate and for more consumers and businesses to adopt digital wallets, accelerating the move away from traditional cash transactions.

However, the transition is not without its challenges. A significant portion of the population, particularly the elderly or those in rural areas, may be less comfortable with technology and still rely heavily on cash. Security is another major concern. As more people link their bank accounts to mobile apps, the risk of sophisticated scams and data breaches increases. Furthermore, there's the simple, practical problem: what happens if your phone's battery dies or you lose internet connection? In these moments, the reliability of a physical banknote is undeniable.

In conclusion, while it's unlikely that notes and coins will disappear completely from Vietnamese pockets overnight, their role is undeniably shrinking. For the younger, tech-savvy generation, digital payments are already the norm. The future will likely be a hybrid system where cash and digital co-exist, but the momentum is clearly with the QR code. For teenagers today, learning to navigate this digital financial world safely and responsibly is no longer just a useful skill—it is an essential part of modern life.