Đề ôn thi Đề thi tốt nghiệp THPT môn Tiếng Anh - Mã đề THPT-75

(18) __________, and spirit. While the physical postures, known as asanas, receive the most attention in modern times, they represent just one of the eight limbs of yoga outlined in the Yoga Sutras of Patanjali. These limbs, (19) __________, encourage self-reflection, discipline, and a mindful connection to the world around us.

The benefits of regular yoga practice extend far beyond increased flexibility and strength. Studies have shown that yoga can help reduce stress, lower blood pressure, and improve cardiovascular health. In a 2014 study published in the Journal of Clinical Psychiatry, researchers found that participants who engaged in yoga sessions twice a week experienced a significant decrease in anxiety symptoms. This holistic approach, (20) __________, distinguishes yoga from other forms of exercise.

Central to the practice of yoga is the concept of mindfulness, or the ability to pay attention to the present moment without judgment. This emphasis on awareness extends to the breath, the sensations in the body, and the fluctuations of the mind. As individuals deepen their practice, (21) __________ and a greater capacity for empathy and compassion.

(22) __________. Its principles encourage a balanced and harmonious life, promoting inner peace and a deep connection to oneself and the world around them. As more people discover the transformative power of yoga, its ancient wisdom continues to resonate and inspire in our modern age.

The history of underwater exploration is remarkably vast, stretching back thousands of years. Early civilizations, limited by technology, still managed to delve into the ocean's depths. Ancient Greeks used diving bells, primitive contraptions that trapped air for short periods, allowing them to descend for pearls and sponges. Similarly, free-divers in ancient cultures across the globe, from the Pacific Islanders to the Mediterranean Sea, developed impressive breath-holding techniques to harvest food and resources from the ocean floor.

By the 17th century, rudimentary diving suits began to emerge. The first functional diving suit, designed by Englishman John Lethbridge in 1715, allowed divers to remain submerged for up to an hour. This, however, was still just scratching the surface of the vast ocean depths. The real breakthroughs in underwater exploration came with the 20th century and the invention of SCUBA (Self-Contained Underwater Breathing Apparatus) gear. Jacques Cousteau, a renowned oceanographer, played a pivotal role in the development and popularization of SCUBA, opening up a new realm of possibilities for exploration.

With the advent of submarines, the exploration of the ocean depths took another giant leap forward. In 1960, the bathyscaphe Trieste made history by reaching the Challenger Deep in the Mariana Trench, the deepest known point on Earth. This groundbreaking feat marked a new era in our understanding of the ocean floor and the life that inhabits it.

Today, the field of underwater exploration is more dynamic than ever. Remotely Operated Vehicles (ROVs) equipped with high-definition cameras and robotic arms allow scientists to study hydrothermal vents, explore shipwrecks, and document new species in environments too hostile for humans. As technology continues to evolve, we can only imagine what incredible discoveries await us beneath the waves.

Understanding quantum mechanics requires us to break away from our classical intuitions about how the world works. [I] In the realm of the very small - atoms, electrons, photons - the rules are fundamentally different. [II] For instance, in classical physics, an object's position and momentum can be precisely known simultaneously. [III] However, in quantum mechanics, this certainty is replaced by the Heisenberg uncertainty principle, which states that there's a fundamental limit to the precision with which certain pairs of physical properties of a particle, like position and momentum, can be known simultaneously. [IV] Another key departure from classical physics is the concept of wave-particle duality, where particles like electrons can exhibit both wave-like and particle-like behavior.

This wave-particle duality is a central tenet of quantum mechanics. It explains phenomena like electron diffraction, where electrons passing through a narrow slit create an interference pattern similar to that of waves. This wouldn't be possible if electrons were solely particles. Further highlighting the wave-like nature is the concept of a wave function, a mathematical description of a quantum system's state. The wave function provides information about the probability of finding a particle at a specific location, not its exact position. This probabilistic nature of quantum mechanics contrasts sharply with the deterministic nature of classical physics, where knowing the initial conditions allows for precise prediction of future states.

The quantization of energy is another ground-breaking concept in quantum mechanics. Unlike classical physics, where energy can take on any continuous value, quantum mechanics dictates that energy exists in discrete packets, or quanta. This is observed in the distinct energy levels of electrons in atoms. When electrons transition between these levels, they emit or absorb photons with energies corresponding to the difference between the levels, leading to the discrete spectral lines observed in atomic spectra. This quantized nature of energy is the basis for understanding the behavior of lasers and many other modern technologies.

Understanding these fundamental principles is crucial for comprehending the bizarre yet beautiful world of quantum mechanics. While it may challenge our classical understanding, it opens up a deeper appreciation for the workings of the universe at its most fundamental level and has led to groundbreaking technological advancements that shape our modern world.