Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-89

Have you ever noticed the 'L' and 'R' letters on your headphones? These symbols are not just for decoration; they indicate the left and right audio channels. Each channel plays a slightly different audio track, which is a key feature of stereo sound. The purpose is to send separate audio information to each of your ears, just like you hear sounds in the real world from different directions.

This system is called stereophonic sound, or 'stereo' for short. By playing different sounds in each ear, audio engineers can create a sense of direction and space. So that your brain can process these differences, the soundscape feels wider and more three-dimensional. A stereo recording is almost always (21) __________ immersive than a mono recording, where the exact same sound is sent to both ears.

Our brains are naturally skilled at identifying where sounds come from. (22) __________ is because our two ears hear sounds at slightly different times and volumes depending on their source. Stereo technology uses this principle to (23) __________ an experience that feels natural. For example, a sound that is louder in the right channel will seem to come from your right side.

This technology greatly improves the listening experience. When you listen to music, you might hear the guitar primarily in your left ear and the piano in your right, making the mix feel more spacious and realistic. In movies, it allows for sound effects to move from one side to the other, following the action on screen. Not only does this make media more engaging, but it is also essential for applications like gaming, where knowing the direction of a sound is crucial.

(24) __________, the 'L' and 'R' on your headphones are fundamental to creating a rich and convincing audio world. They enable stereo sound, which works with your brain's natural abilities to simulate a realistic, three-dimensional soundscape. The next time you put on your headphones, pay attention to the different sounds in each ear and appreciate the clever technology at work.

For many teenagers, life often feels like a constant juggle between textbooks, homework, and exam preparation. While academic success is a clear priority, it’s easy to overlook another crucial component: playing sports. Beyond the classroom, engaging in physical activity, whether individually or as part of a team, offers immense benefits. [I]

The most immediate advantage of playing sports is its profound impact on physical health. Regular exercise strengthens your cardiovascular system, builds muscle, and helps maintain a healthy weight. For growing adolescents, this is vital for developing strong bones and improving overall endurance, which in turn boosts energy levels and enhances sleep quality. Engaging in activities like football or badminton helps counteract sedentary lifestyles, laying a crucial foundation for lifelong physical well-being. [II]

Beyond the physical, sports significantly foster mental and emotional health. Intense study schedules often create considerable stress. Engaging in physical activity offers an excellent outlet, releasing endorphins that naturally alleviate anxiety and improve mood. This mental break allows your brain to recharge, often leading to improved concentration and focus upon returning to studies. In fact, many students find sports help them perform better academically, enhancing overall cognitive function. [III]

Furthermore, sports are powerful catalysts for social development. Team activities teach invaluable lessons in collaboration, communication, and leadership as players work towards common goals. These interactions foster new friendships and a strong sense of belonging. In Vietnam, despite intense academic focus, sports like football are immensely popular, drawing communities together. Public spaces, such as parks in Da Nang, increasingly feature outdoor exercise machines, making physical activity accessible and promoting community wellness. [IV]

In conclusion, playing sports is far more than just a hobby; it's a fundamental investment in your holistic development. Whether you prefer basketball, badminton, or simply a jog in the park, incorporating physical activity into your routine is crucial. It’s not a distraction from studies but rather a powerful complement, equipping you with the physical resilience, mental clarity, and social skills necessary for adolescence and beyond. Embracing sports means embracing a healthier, happier, and more balanced life.