Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-53

From the winding road, the ancient citadel first appeared as a silhouette against the afternoon sun. Its massive stone walls seemed to rise directly from the earth, hinting at centuries of history. (23) __________. (24) __________

Hydroelectric power is a significant source of renewable energy, generating electricity without burning fossil fuels. The process starts with a dam, which holds back a large river to form a reservoir. This stored water has huge potential energy. When electricity is needed, gates in the dam open and the water flows through a pipe called a penstock. The main (25) __________ of this process is clean energy, but building a dam can also harm local ecosystems.

As the water rushes downwards, it turns the blades of a giant turbine. This turbine is connected (26) __________ a generator. The spinning motion of the turbine makes the generator rotate, converting mechanical energy into electrical energy. (27) __________, the electricity is sent through power lines to homes and businesses. The entire system is quite efficient, and (28) __________ hydroelectric plants can produce a massive amount of power. Engineers have to (29) __________ complex challenges like water pressure and environmental impact when designing a dam. If we (30) __________ more on renewable sources like hydropower, we would reduce our carbon footprint significantly.

In a bustling city like Ho Chi Minh City, where do you meet your friends to relax? For many teenagers, the answer is a local park. But these green areas are more than just social spots. Planners call them a city’s “green lungs” because they are essential for the health of the city and its people. These spaces offer hidden benefits that we often take for granted.

The most obvious benefits are environmental. Trees and plants in parks are fantastic at improving air quality. They absorb harmful pollutants from traffic and release clean oxygen. This cleaning process is vital for public health. Furthermore, parks help cool down cities. Concrete and buildings trap heat, creating an “urban heat island,” but the shade from green spaces can lower temperatures, making urban life more comfortable.

Beyond the environment, green lungs have huge social and mental benefits. They are natural meeting points that encourage community connection and reduce feelings of isolation, which can be common in dense urban areas. Having a quiet place to walk or play sports helps decrease stress and improve mental well-being. For teenagers, a safe and free public space to socialize is incredibly important.

So, the next time you are on a park bench, remember you are in a special place. These green lungs are a powerful investment in a healthier, happier, and more connected city. Protecting and creating these spaces is one of the smartest things a city can do for its future.

In today's digital world, building brand loyalty is more complex than ever. For years, the common belief was that a superior product was the only thing that mattered. (37) __________. This traditional view, however, is being challenged.

The rise of social media has significantly shifted this perspective, (38) __________. Many modern brands now recognize that fostering a sense of community is incredibly powerful, (39) __________, and a strong community can lead to organic marketing and deeper emotional investment. (40) __________.

A. Ultimately, the most successful brands today skillfully combine an excellent product with a vibrant, engaged community

B. creating spaces where users can connect not only with the brand but also with each other

C. This meant companies focused almost exclusively on innovation and quality control

D. as it makes customers feel like they are part of something bigger