Đề ôn thi Đề thi vào lớp 10 Hà Tĩnh môn Tiếng Anh - Mã đề HTI-117

Crude oil, as it comes from the ground, cannot be used directly. It's a complex mixture of hundreds of hydrocarbons that must be refined. The first step in this refining is the (24) __________ of these different components. This process is known as fractional distillation and is essential for producing the fuels we use every day.

Inside a refinery, crude oil is heated until it becomes a hot vapor. This vapor enters the bottom of a tall tower which is cooler at the top. As the vapor rises, it cools and condenses at different levels. Lighter parts with lower boiling points rise the (25) __________, while heavier parts condense lower down. This method enables engineers (26) __________ various products like gasoline and diesel. (27) __________ is how a single raw material creates multiple fuels.

The entire refining system (28) __________ in our economy, powering transportation and industry. (29) __________, it’s a process of separating liquids by their boiling points, a key chemical principle applied on a huge scale.

Vietnam's Mid-Autumn Festival, or Tết Trung Thu, is one of the most anticipated celebrations of the year, especially for children. Traditionally, it's a time when families gather to watch the full moon, which is at its brightest. Children parade through the streets with colorful lanterns in various shapes, like stars and fish. The exciting sound of drums from lion dance performances fills the air, creating a magical atmosphere for everyone.

However, in recent years, a significant change has been observed. The festival has become more commercialized. The focus has shifted partly from children's activities to the business of mooncakes. Companies now produce elaborate mooncakes with luxurious packaging and unique flavors. These are not just for family enjoyment but are heavily marketed as premium corporate gifts, often with very high price tags, transforming a simple treat into a symbol of status.

This transformation has sparked a debate. On one hand, the new variety of mooncakes allows for new ways to celebrate and share the festival spirit with colleagues and business partners. On the other hand, many people worry that the original meaning is fading. They feel the focus on expensive gifts puts pressure on families and moves away from the traditional celebrations centered on children's joy. These new types of mooncakes have become status symbols, and many feel they are simply too expensive for the average family.

Ultimately, the evolution of Tết Trung Thu reflects a wider conversation in modern Vietnam: how to preserve cultural heritage while adapting to contemporary life. The question is not whether the festival will survive, but what its identity will become. Will it find a balance between its charming origins and its commercial present, ensuring it remains a meaningful event for both children and adults?