Đề ôn thi Đề thi vào lớp 10 Hà Nội môn Tiếng Anh - Mã đề HN-137

(23) __________ . This awareness often motivates people to set goals, like walking more or going to bed earlier. Seeing progress in real-time reinforces these positive behaviors. (24) __________

The Arctic fox is a true master of survival, perfectly adapted to the harsh conditions of the Arctic tundra. (25) __________ of its most fascinating adaptations is its seasonal camouflage. During the short Arctic summer, when the ground is a mix of rock and sparse vegetation, the fox sports a brown or grey coat. This allows it to blend in perfectly (26) __________ its surroundings, making it an effective hunter of birds and small mammals.

However, as winter approaches and the days grow shorter, a remarkable transformation begins. The change in daylight triggers a hormonal response in the fox. (27) __________, it starts to shed its dark fur and grow a thick, brilliant white coat. This change has a dramatic (28) __________ on its ability to survive. If a fox's fur remained brown against the snow, it (29) __________ a very obvious target for predators like eagles and polar bears. The fox must successfully (30) __________ these extreme environmental shifts each year.

In early 2014, the digital world was taken over by a surprisingly simple mobile game: Flappy Bird. Created by Nguyễn Hà Đông, an independent developer from Hanoi, Vietnam, the game challenged players to guide a small bird through a series of green pipes. Its graphics were basic and its concept straightforward, yet it became an overnight sensation, frustrating and delighting millions of players globally.

Flappy Bird was initially released in May 2013 but received little attention. Then, in January 2014, it experienced a sudden surge in popularity, climbing to the top of the free app charts. This organic growth was remarkable. The success was achieved with minimal marketing effort, relying on social media buzz and word-of-mouth from players sharing their high scores.

The sudden fame, however, brought immense pressure for Nguyễn Hà Đông. He was unprepared for the global spotlight and media attention. Feeling the game had become an addictive problem, he made a shocking decision. In February 2014, at its peak, he permanently removed Flappy Bird from app stores, stating he 'could not take this anymore.'

Despite its short life, Flappy Bird’s legacy continues. It proved that a single developer with a simple concept could capture the world’s attention. For many aspiring young programmers, especially in Vietnam, the story was a powerful source of inspiration. It demonstrated that a creative idea, regardless of its origin, has the potential for massive global impact in the modern digital age.

"Ghost nets" are fishing nets that have been lost or abandoned in the ocean. They are a serious threat to marine ecosystems because they continue to function long after they are lost, (37) __________. This process, often called "ghost fishing," can continue for decades.

Made from durable synthetic materials like nylon, these nets do not biodegrade easily, (38) __________. As they drift, they can also damage sensitive habitats like coral reefs. Moreover, tiny plastic particles break off from the nets over time, (39) __________. Addressing the issue of ghost nets requires international cooperation to clean up existing nets and prevent future abandonment, (40) __________.

A. contributing to the growing problem of microplastic pollution

B. thereby protecting our oceans for future generations

C. trapping fish, sea turtles, dolphins, and even whales

D. persisting in the marine environment for hundreds of years