Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-90

(23) __________ I walked back to the bus stop, scanning the pavement under the streetlights. After finding nothing on the ground, I finally patted down my coat out of pure desperation. (24) __________

What is wind energy? Simply put, it's the process by which wind is used to (25) __________ electricity. People (26) __________ wind power for a long time, historically using windmills to grind grain or pump water. Today, we use modern versions called wind turbines. A wind turbine works like a fan, but in reverse. Instead of using electricity to make wind, a turbine uses wind to make electricity.

Wind turbines are tall structures (27) __________ have two or three long blades. When the wind blows, it pushes against these blades, causing them to spin. This kinetic energy from the spinning blades (28) __________ into mechanical power, which a generator then turns into electricity. This makes wind a clean and (29) __________ source of energy because it doesn't produce air pollution like fossil fuels do.

(30) __________, some people are concerned about the noise the turbines make and their impact on bird populations. Still, it remains a promising solution for a greener future.

Rivers are the lifelines of our planet, flowing through landscapes and cities, supporting diverse ecosystems and providing essential water for millions. In our busy daily lives, we often see these rivers but may not think about their health. They are a critical part of our environment, but many face a silent crisis of pollution, turning them from sources of life into symbols of neglect.

The primary threats to river health come from human activities. Industrial factories often discharge chemical waste directly into the water. In rural areas, fertilizers and pesticides from farms can wash into rivers during heavy rain. This process, known as agricultural runoff, can seriously contaminate water sources. Furthermore, plastic bottles, bags, and other non-biodegradable trash frequently end up in rivers, harming aquatic animals and degrading water quality for everyone.

In Vietnam, this problem is very real. The To Lich River in Hanoi, for example, is a well-known case of severe urban water pollution. For years, it has struggled with waste and a dark, unpleasant appearance, making it a visible symbol of environmental challenges. Despite numerous cleanup projects and public promises, restoring the river to its former health has proven to be an incredibly difficult and complex task, showing just how long-term the damage can be.

Understanding the state of our local rivers is the first step towards protecting them. The health of these waterways is a direct reflection of the health of our community and our environment. As young citizens, being aware of the sources of pollution and supporting efforts to reduce waste can make a significant difference. The future of our rivers, and our cities, depends on the choices we make today.

Many young students feel pressured to specialize in one subject very early, often seeing it as a clear path to a future career. This approach seems logical in a competitive world, but it has significant hidden dangers. (37) __________.

Early specialization can also limit a student's future options in a world that is constantly changing. (38) __________. A broader education, on the other hand, equips students with diverse skills. (39) __________. Therefore, it is far more beneficial for young people to keep their options open. (40) __________.

A. A job that is in high demand today could become automated or obsolete in the next decade

B. This allows them to make a more informed and mature decision about their career when the time is right

C. This pressure can prevent them from exploring other subjects where they might have a hidden talent or passion

D. These transferable skills, like critical thinking and problem-solving, are valuable in any profession