Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-23

In our solar system, among the many moons orbiting the giant planets, Europa stands out. It is one of Jupiter’s largest moons, but its appearance is quite different from others. While many celestial bodies are covered in craters, Europa’s surface is remarkably smooth. However, it is also covered in long, dark cracks, giving it a very (35) __________ appearance. This mysterious look is one reason why scientists are so interested in it.

The main reason for this scientific interest is the strong possibility that a vast ocean of liquid water exists (36) __________ its icy shell. Scientists believe this ice shell could be several kilometers thick, but under it, there might be an ocean of salty water. This ocean could contain more water than all of Earth's oceans combined. The presence of liquid water, (37) __________ is a key ingredient for life as we know it, makes Europa an extremely compelling target for exploration.

What is the evidence for this hidden ocean? The cracked surface suggests that the ice shell moves and shifts, which could be caused by an ocean below. Additionally, data from the Galileo spacecraft showed that Europa has a weak magnetic field that changes as it orbits Jupiter. The gravitational pull of Jupiter has a significant (38) __________ on Europa's interior, possibly creating enough heat to keep the water liquid. This is considered (39) __________ evidence for a subsurface ocean.

The implications of finding liquid water are enormous. (40) __________, the discovery of an ocean would make Europa one of the most likely places in our solar system to find extraterrestrial life. Although this life might only be microscopic organisms, the discovery would be revolutionary. This is why future missions (41) __________ to explore this possibility in more detail, with some planning to land a probe on the surface.

In conclusion, Europa is not just another moon. It is a world of incredible potential. Its smooth, cracked surface and the tantalizing possibility of a hidden ocean make it one of the most exciting objects for planetary scientists to study. (42) __________ new piece of information from missions like the upcoming Europa Clipper brings us closer to understanding this mysterious world and answering the question: are we alone in the universe?

In early 2014, the digital world was taken by storm by a deceptively simple mobile game: Flappy Bird. Created by Vietnamese developer Nguyễn Hà Đông, the game featured basic 8-bit graphics and a straightforward objective: guide a small bird through a series of green pipes without crashing. Despite its simplicity, or perhaps because of it, the game became incredibly addictive. It represented a unique moment where an independent creator from Vietnam captured the attention of millions of smartphone users globally, proving that a complex design and a large budget are not always necessary for success.

Flappy Bird was originally released in May 2013 but received little attention for months. Suddenly, in January 2014, it experienced a viral surge in popularity. Without any marketing or promotion, it climbed the charts to become the most downloaded free game on the iOS App Store. The game's difficulty was a key part of its appeal; the frustration of failure was matched only by the intense satisfaction of beating one's own high score. This simple loop made it a cultural phenomenon, discussed endlessly on social media and played by people from all walks of life.

However, the sudden global fame came at a significant personal cost to its creator. Nguyễn Hà Đông was not prepared for the intense media scrutiny and the pressure that accompanied his creation's success. He received constant messages, was accused of plagiarizing the game's art (a claim that was largely unfounded), and found the attention overwhelming. He stated that the game had become an "addictive product" and that its purpose—to be a relaxing game for a few minutes—was lost. On February 10, 2014, at the peak of its popularity, Đông made the shocking decision to remove Flappy Bird from all app stores.

The removal of the game only increased its legendary status. Phones with the game installed were sold for high prices online, and countless clones appeared, trying to replicate its success. For Vietnam, Flappy Bird was more than just a game; it was a source of national pride and a spotlight on the country's growing tech industry. It demonstrated to the world, and to young Vietnamese people, that a single developer with a good idea could compete on a global stage.

The story of Flappy Bird serves as a powerful lesson. It highlights the unpredictable nature of viral success and the immense pressure it can place on individuals. More importantly, it is a testament to the power of simplicity in design. Nguyễn Hà Đông's creation reminds aspiring developers that an engaging user experience, rather than complex features, is often the true key to capturing the public's imagination.