영어 모의고사 (자동 편성)

During sleep, the brain does not simply rest; it actively reorganizes the day's experiences into lasting memories through a process called consolidation. Newly formed memories are initially fragile and ①store primarily in a brain region called the hippocampus, ②which has limited long-term capacity. While a person sleeps, particularly during the deep stages of non-REM sleep, neural activity replays these fresh memory traces in rapid, compressed sequences, gradually ③transferring the information to the cortex for more durable, long-term storage. This replay strengthens the connections between neurons that encoded the original experience, ④making the memory more resistant to interference from unrelated events the following day. Sleep researchers have demonstrated this effect experimentally: participants who slept after ⑤learning a list of word pairs recalled more items the next day than participants who remained awake instead.

Many people struggling to fall asleep in noisy environments turn to white noise machines, devices that emit a ①chaotic, uniform sound covering a broad range of frequencies. The appeal lies in a phenomenon called auditory masking, in which a constant background sound makes sudden noises, such as a slamming door, ②less noticeable to the sleeping brain. Without this masking effect, an abrupt change in sound is far more likely to trigger a brief awakening, even if the sleeper does not ③consciously remember it the next morning. Studies comparing sleep in quiet rooms with sleep alongside white noise have found that participants using white noise experienced fewer of these brief awakenings and reported feeling more ④rested. However, researchers caution that the benefit depends heavily on volume and consistency, since noise that is too loud or that varies unpredictably can itself become a source of ⑤disruption rather than a remedy.

As more businesses move their operations online, cyberattacks have become one of the most ①serious threats facing modern companies. In response, demand for cybersecurity professionals has ②decreased across nearly every industry. These specialists design systems that detect suspicious activity, patch vulnerabilities before criminals can exploit them, and train employees to recognize phishing attempts. Unlike many technical fields, cybersecurity requires constant learning, since hackers continually develop new methods to ③bypass existing defenses. Despite this expansion, experts estimate that millions of cybersecurity positions worldwide remain ④unfilled, largely because the number of qualified applicants has not kept pace with rapidly increasing demand. This shortage suggests that cybersecurity will remain a ⑤promising career path for years to come.

Ambitious young athletes and the parents who support them sometimes assume that more training automatically produces better results, a belief that occasionally leads to a condition known as overtraining syndrome. Unlike ordinary fatigue that resolves after a few days of rest, overtraining syndrome develops gradually over weeks or months of insufficient recovery relative to training load, eventually producing persistent exhaustion, declining performance despite continued hard work, and increased susceptibility to illness and injury. Warning signs are often subtle at first, including disrupted sleep, irritability, and a loss of enthusiasm for a sport the athlete once genuinely enjoyed, which adults often mistake for ordinary moodiness. Recovery from full-blown overtraining syndrome can take months rather than days, which is why _______________.

Jina used to fill her apartment with items she rarely used, believing that owning more things would make her happier. After moving twice within a single year, she grew exhausted from packing boxes filled with clothes she had never worn and gadgets she had forgotten she owned. Frustrated, she decided to try a minimalist lifestyle, keeping only objects that served a clear purpose or brought her genuine joy. Gradually, however, she noticed that her small apartment felt calmer and easier to manage. She also realized that she spent significantly less money once she stopped buying things impulsively to fill emotional gaps. Inspired by her experience, several of her friends began adopting similar habits, questioning purchases they once made without thinking. Jina's story reflects ___________.

The subscription economy has changed the way many people think about ownership. (A) As a result, companies can predict their income more accurately and plan their operations accordingly. (B) Rather than buying products outright, consumers increasingly prefer paying small recurring fees for continued access. (C) This shift benefits businesses as well, since steady monthly payments create a stable source of revenue.

Companies have discovered that ordinary advertisements no longer capture the attention of young consumers as effectively as they once did. (A) As a result, many brands now spend a large portion of their advertising budgets on influencer partnerships rather than television commercials. (B) This is because influencers build long-term relationships with their audiences, which makes recommendations feel personal rather than commercial. (C) However, brands must choose their partners carefully, since an influencer's reputation can directly affect how a product is perceived.

주어진 문장: Every choice, from filters to captions, is carefully calculated to create a favorable impression on viewers. Sociologist Erving Goffman argued that people constantly perform for others, much like actors managing their image on a stage, a concept known as impression management. ( ① ) This idea applies vividly to social media, where users select flattering photos and delete posts that might damage their reputation. ( ② ) Such careful curation allows people to present an idealized version of themselves that emphasizes achievements while hiding struggles or ordinary moments. ( ③ ) However, when this performance becomes constant, a troubling gap can form between one's authentic self and the polished character displayed online. ( ④ ) Maintaining that gap requires considerable emotional energy, and studies suggest it often leads to anxiety and exhaustion. ( ⑤ ) Furthermore, comparing one's own carefully staged life to others' equally staged posts can distort what people believe is normal. Therefore, individuals should recognize that some self-presentation online is inevitable, but they must also protect space where imperfection is allowed to remain visible.

주어진 문장: This flexibility, however, comes with a hidden cost that many workers overlook. Remote work has moved from a rare privilege to a common practice for millions of employees worldwide. ( ① ) Many companies that once required workers to commute daily now allow them to complete tasks from home. ( ② ) Supporters argue that remote work increases productivity, since employees avoid long commutes and distracting office environments. ( ③ ) It also allows companies to hire talented people regardless of where they live, widening the pool of candidates. ( ④ ) Critics, however, worry that remote work weakens teamwork and makes it harder for new employees to learn from experienced colleagues. ( ⑤ ) Without regular face-to-face interaction, some workers feel isolated and struggle to build strong professional relationships.

This process, though it may sound simple, triggers a remarkable series of adaptations throughout the cardiovascular system. Aerobic exercise, such as jogging, swimming, or cycling at a steady pace, strengthens the heart by forcing it to pump larger volumes of blood with each beat. ( ① ) Over weeks of consistent training, the heart gradually enlarges and becomes more efficient, meaning it can deliver the same amount of oxygen to working muscles while beating fewer times per minute. ( ② ) This adaptation explains why trained athletes often have a much lower resting heart rate than sedentary individuals of the same age. ( ③ ) Beyond the heart itself, aerobic activity encourages the body to build new capillaries within muscle tissue, improving the delivery of oxygen and nutrients at a cellular level. ( ④ ) Researchers have also found that regular aerobic exercise reduces inflammation throughout the body and improves the way cells respond to insulin. ( ⑤ )