Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-143

The Sun, at the center of our solar system, provides the heat and light essential for life on Earth. But what is this massive ball of fire made of? It isn't solid or liquid, but an incredibly hot ball of gas. The Sun is (21) __________ giant star, and like others, its composition is simple yet fascinating. Understanding its components helps us comprehend the processes that power our solar system.

Scientists have studied the Sun's light to learn its ingredients. It is mainly composed of two primary gases: hydrogen and helium. Approximately 74% of the Sun’s mass is hydrogen, and about 24% is helium. These two elements together make up 98% of the Sun. The small remaining percentage consists of a mix of heavier elements like oxygen and carbon.

This transformation happens deep inside the Sun’s core. Here, the temperature and pressure are immense; as a result, hydrogen atoms are squeezed so forcefully that they fuse into helium. This process, nuclear fusion, (22) __________ an enormous amount of energy as light and heat, which then travels through space to our planet.

Early astronomers explained that the Sun also contained trace amounts of other elements too. This discovery was crucial for understanding the life cycle of stars. However, compared to the vast amounts of hydrogen and helium, these heavier elements are just a (23) __________ in the ocean, representing less than 2% of its mass.

The conditions in the Sun's core are essential. If the Sun’s core were not so hot and dense, this fusion reaction (24) __________. The balance between gravity pulling inward and the energy from fusion pushing outward is what keeps our Sun stable, allowing it to shine for billions of years.

With the high school entrance exam looming, many students wonder about every possible edge. Could an AI tutor truly be that advantage, helping you conquer the challenging Kỳ thi tuyển sinh lớp 10? [I] These innovative tools promise to revolutionize traditional study methods, offering personalized support that was once unimaginable.

[II] These advanced AI systems aren't just glorified digital textbooks. Instead, they leverage sophisticated algorithms to analyze your learning patterns, identify your individual strengths and weaknesses, and then create a highly personalized study plan. Imagine an AI tutor that knows exactly which math concepts you struggle with or which historical events you consistently forget. It can then provide targeted practice questions, explain concepts in different ways, and even recommend specific resources, making your study sessions incredibly efficient and focused on what you truly need.

[III] This trend is particularly relevant in Vietnam, where the high school entrance exam, or Kỳ thi tuyển sinh lớp 10, is a pivotal and often stressful milestone. Local ed-tech companies, such as HOCMAI, are at the forefront of integrating AI into their platforms to specifically address the demands of this competitive examination. Their AI-powered tools meticulously analyze your performance on practice tests, pinpointing the exact areas where you need more focus. By providing tailored practice and immediate feedback, these platforms aim to optimize your preparation, ensuring you spend time wisely on areas that truly need improvement.

For a 14-15 year old student, this isn't just a theoretical advancement; it’s a direct, practical advantage. The high school entrance exam is undeniably one of the most stressful academic events you'll face, and the pressure to perform well can be immense. AI tutors offer a way to cut through the overwhelming amount of material by focusing your efforts where they matter most. Instead of blindly reviewing everything, you can target specific weak spots, build confidence in challenging subjects, and ultimately approach the exam feeling more prepared and less anxious. [IV]

While an AI tutor cannot replace the hard work, dedication, and critical thinking required to excel, it serves as an incredibly powerful supplementary tool. By providing data-driven insights and a highly customized learning path, AI applications in education offer a unique opportunity to enhance your study effectiveness. Leveraging these smart technologies can make your journey towards the Kỳ thi tuyển sinh lớp 10 not only more efficient but also potentially more successful, transforming the way you prepare for this crucial academic challenge.