영어 모의고사 (자동 편성)

Across many countries, high schools ① begins classes early in the morning, often before eight o'clock. This schedule assumes that teenagers can simply go to bed earlier to compensate, but biology tells a different story. During adolescence, the body's internal clock shifts later, ② delaying the release of melatonin until well after ten at night. As a result, most teenagers are not physiologically ready to fall asleep until much later than younger children or adults. When early start times force them ③ to wake before their bodies have completed a full sleep cycle, the mismatch accumulates into a chronic sleep debt ④ that affects concentration and mood throughout the school day. Researchers who study this mismatch argue that the underlying problem is not laziness or poor discipline among students, but a scheduling system ⑤ built around adult rhythms rather than adolescent ones.

VO2 max, ① defined as the maximum volume of oxygen a person's body can consume and use during intense exercise, is widely regarded as one of the best single indicators of cardiorespiratory fitness. Elite endurance athletes typically post VO2 max values far higher than those of untrained individuals, ② reflecting hearts that pump larger volumes of blood and muscles that extract oxygen from that blood with remarkable efficiency. While genetics accounts for a substantial portion of an individual's potential VO2 max, consistent aerobic training can still ③ raise the measurement considerably over months of dedicated effort. Interval training, which alternates short bursts of near-maximal effort with periods of recovery, has proven particularly effective at ④ improve this measurement compared to steady, moderate-intensity exercise alone. It is worth noting, however, that a high VO2 max does not guarantee success in competition, since factors such as running economy, pacing strategy, and mental resilience also ⑤ play a decisive role in determining who actually crosses the finish line first.

Among strategies for improving ①concentration, the Pomodoro Technique remains one of the most widely recommended methods for students and workers. This technique involves working with full attention for twenty-five minutes, then taking a short five-minute break before starting the next session. After completing four of these cycles, a longer break of fifteen to thirty minutes is usually taken to allow mental ②recovery. The method assumes that sustained focus becomes harder to maintain as time passes, so frequent short breaks prevent mental ③fatigue from building up. Students preparing for exams report finishing reading assignments faster when they follow this structured rhythm instead of studying without interruption. Office workers find that dividing large projects into short, timed intervals makes overwhelming tasks feel more ④manageable. Because each interval has a clear start and end, procrastination becomes ⑤more tempting, since beginning a single twenty-five-minute session requires less commitment than beginning an entire project.

Climate scientists frequently warn about tipping points, thresholds beyond which a small additional change triggers a large, often irreversible shift in the climate system. Unlike ①gradual warming, which unfolds steadily over decades, crossing a tipping point can produce ②dramatic consequences within a short period. For instance, as Arctic ice melts, it exposes darker ocean water that absorbs more sunlight than reflective ice, accelerating further melting in a self-⑤reinforcing cycle. Similarly, scientists worry that a major ocean current, which currently redistributes heat across the planet, could slow dramatically if enough freshwater from melting glaciers dilutes the surrounding seawater. Once such thresholds are crossed, restoring the original balance may become nearly ③possible, even if emissions are later reduced. Therefore, researchers argue that preventing these transitions matters more than merely slowing average temperature increases. Identifying how close each system stands to its threshold remains one of the most ④urgent challenges in climate research.

Remote work has moved from a rare privilege to a common practice for millions of employees worldwide. Supporters argue that remote work ①decreases productivity, since employees avoid long commutes and distracting office environments. It also allows companies to hire talented people regardless of where they live, ②widening the pool of candidates. Critics, however, worry that remote work ③weakens teamwork and makes it harder for new employees to learn from experienced colleagues. Without regular face-to-face interaction, some workers feel ④isolated and struggle to build strong professional relationships. For these reasons, many experts suggest that the future of work will likely be hybrid, ⑤combining flexibility with occasional in-person collaboration.

As more businesses move their operations online, cyberattacks have become one of the most serious threats facing modern companies. In response, demand for cybersecurity professionals has surged across nearly every industry. Despite this expansion, experts estimate that ___________, largely because the number of qualified applicants has not kept pace with rapidly increasing demand. This shortage suggests that cybersecurity will remain a promising career path for years to come.

Pop-up stores have become a popular way for brands to create memorable experiences. (A) As a result, visitors often feel a stronger emotional connection to the brand than they would from an ordinary store visit. (B) Because these spaces exist only temporarily, customers feel a sense of urgency to visit before the opportunity disappears. (C) Many brands design these spaces to be visually striking, encouraging visitors to share photographs on social media.

This constant, individualized adjustment is what makes the technology feel so different from a standard workbook. Adaptive learning apps promise something no traditional classroom can easily offer: a lesson plan that adjusts itself to each individual student in real time. ( ① ) As a student answers practice questions, the app tracks which concepts are mastered and which remain shaky, then quietly reshuffles the next set of problems to target the weaker areas. ( ② ) Early studies suggest that this personalized pacing can help struggling students catch up faster than a one-size-fits-all worksheet ever could. ( ③ ) However, critics caution that an app cannot replace the encouragement, humor, and flexibility a human teacher brings to a lesson, especially when a student is frustrated rather than simply behind. ( ④ ) There is also a subtler concern: students who grow used to instant, algorithm-generated feedback may struggle later with the slower, more ambiguous kind of feedback that real-world tasks and mentors typically provide. ( ⑤ )

주어진 문장: This memory advantage occurs because the brain treats an open task as unresolved business that deserves continued attention. Have you ever noticed that an unfinished task keeps returning to your mind long after you stopped working? ( ① ) This phenomenon was first noticed by psychologist Bluma Zeigarnik, who saw that waiters remembered unpaid orders better than paid ones. ( ② ) Her observation led to what is now called the Zeigarnik effect: people remember incomplete tasks more vividly than completed ones. ( ③ ) According to this theory, the mind maintains mental tension until a task reaches closure, keeping the unfinished task active in memory. ( ④ ) Once the task is completed, the tension is released, and the mind lets go of the details. This effect explains why students often think about unsolved homework even during unrelated activities like eating dinner. It also explains why writing down an incomplete plan can reduce anxiety, since a note serves as temporary closure. Teachers sometimes use this principle, leaving lessons purposely unfinished to encourage students to keep thinking about the material. ( ⑤ )

주어진 문장: Creating a convincing avatar, in other words, is far more complex than simply choosing a picture. The metaverse, a network of interconnected virtual worlds, has begun to generate job opportunities that did not exist just a few years ago. ( ① ) Companies now hire virtual world designers who build digital environments where users can socialize, shop, or attend events. Avatar designers create digital identities that represent users within these spaces, blending artistic skill with technical programming knowledge. ( ② ) Meanwhile, virtual event planners organize concerts, conferences, and product launches entirely within online platforms, reaching audiences that would be impossible to gather in person. ( ③ ) Some analysts remain skeptical, pointing out that the metaverse has not yet attracted the massive user base that early predictions promised. ( ④ ) Nevertheless, major companies continue investing heavily in this technology. ( ⑤ ) For students considering future careers, gaining skills in three-dimensional design and coding may prove valuable.