영어 모의고사 (자동 편성)

Open a music streaming app on any given morning, and a personalized playlist is usually already waiting, ① assembled overnight from songs the algorithm predicts will match a listener's current mood. This prediction relies on far more than genre alone; the system studies skip rates, replay counts, and even the time of day a song is typically ② playing, building a remarkably detailed profile of individual taste. Listeners often praise the feature for ③ introducing them to artists they never would have searched for on their own, effectively acting as a tireless music scout working around the clock. Musicians, meanwhile, have mixed feelings about this shift in how audiences ④ discover new music. A song that the algorithm decides not to promote may struggle ⑤ to reach listeners no matter how well it was written.

For decades, productivity advice has focused almost entirely on managing time efficiently, yet many experts now argue this approach ①emphasizes something important. Unlike time, which flows at a ②constant rate, human energy naturally rises and falls in cycles shaped by sleep, food, and mental fatigue. A person who tackles difficult tasks during a low-energy period, for instance, may need two hours to finish what takes thirty minutes at ③peak energy. Similarly, someone who forces themselves to keep working without rest often produces careless mistakes that require additional time to ④correct later. Advocates of energy management recommend identifying one's peak hours and reserving them for demanding work, while saving low-energy periods for ⑤routine tasks.

After a strenuous workout, muscle fibers experience thousands of microscopic tears, and the body immediately begins a repair process that depends heavily on amino acids, the building blocks that protein supplies. This is why sports scientists recommend consuming protein within a couple of hours after training, since _______________. Many athletes assume that eating an enormous quantity of protein in a single sitting will speed up this process, but the body can only use a limited amount at once; the rest is simply burned for energy or stored as fat.

Across many countries, high schools begin 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, 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 to wake before their bodies have completed a full sleep cycle, the mismatch accumulates into a chronic sleep debt that affects concentration and mood throughout the school day. Researchers who study this mismatch argue that _______________. Some school districts that delayed their start times by thirty minutes reported improvements in attendance, suggesting that the timing of the school day matters more than commonly assumed.

On a summer evening, downtown streets often feel noticeably hotter than nearby parks or suburban neighborhoods, even after the sun has set. This phenomenon, known as the urban heat island effect, occurs when _______________. Unlike soil or vegetation, which absorb and release heat gradually, these man-made surfaces absorb sunlight during the day and slowly radiate it back at night, preventing temperatures from cooling. Tall buildings packed closely together also block wind, trapping warm air within narrow streets. In contrast, areas with abundant trees and open water naturally stay cooler, since plants release moisture that helps lower surrounding temperatures. To reduce this effect, many cities have begun installing rooftop gardens and expanding public parks, hoping that additional greenery will absorb less heat than pavement does.

Rather than replacing human creativity outright, many artists, writers, and filmmakers have begun treating AI tools as an unusual kind of collaborator, one that generates dozens of rough options in the time it would take a person to sketch just one. (A) A film composer might similarly use an AI system to generate a rough melody, then rework it entirely by hand until it fits the emotional tone of a specific scene. (B) A novelist might ask an AI model for ten possible opening lines and then discard nine, keeping only the phrase that sparks an idea worth developing further. (C) What makes this collaboration work, according to many creators, is that the human remains firmly in charge of judgment and taste, using the AI's output as raw material rather than a finished product.

Understanding the perfectionism-procrastination cycle can help students break free from a frustrating pattern of delay. (A) This fear does not mean perfectionists lack motivation; rather, it pushes them to delay the task in order to avoid confronting their own high standards. (B) As a result, many perfectionists end up completing work at the last possible moment, which paradoxically increases the likelihood of the very mistakes they feared. (C) When someone holds unrealistic expectations for a task, the fear of falling short often becomes so intense that starting the task itself feels dangerous.

Some welcome the tool as a quick way to sketch ideas before refining them by hand. Feed an AI music program a mood, a tempo, and a rough genre, and within seconds it can generate a complete instrumental track, ready to be dropped under a video or used as background music for a small business. ( ① ) The software has studied thousands of existing songs, learning which chord progressions and rhythms tend to sound pleasant together, and it recombines these patterns into something new rather than copying any single source directly. ( ② ) For independent creators who cannot afford a composer or expensive licensing fees, this has been a genuine breakthrough. ( ③ ) Professional musicians, however, remain divided. ( ④ ) Others worry that a flood of AI-generated background music could quietly push human composers out of smaller, lower-budget projects, the very jobs many musicians once relied on to build a career. ( ⑤ )

주어진 문장: This misconception, sometimes called the twenty-one-day myth, has been repeated so often that many people accept it without question. Many people believe that a new habit becomes automatic after only twenty-one days, but researchers who examined real behavior found a different number. ( ① ) This project, called the 66-day habit formation study, tracked volunteers who tried to adopt a new daily habit, like drinking water with lunch. ( ② ) Researchers measured how automatic each action felt over time and found that habits needed an average of sixty-six days to become effortless. ( ③ ) Yet the actual time varied widely, ranging from about eighteen days for simple habits to over two hundred days for difficult ones. ( ④ ) This wide range explains why the popular twenty-one-day claim, though easy to remember, rarely matches real experience. ( ⑤ ) For instance, flossing might feel automatic within a few weeks, while jogging every morning may take months to feel natural. The study's central lesson is that patience matters more than speed when building lasting habits.

This happens because the eyes remain remarkably responsive to light even after darkness falls, cueing the brain that it is still daytime. Smartphones, tablets, and computer screens all emit a significant amount of blue light, a short-wavelength light that our eyes are especially sensitive to. ( ① ) During the day, exposure to blue light from the sun helps keep us alert and mentally sharp, which is generally beneficial. ( ② ) At night, however, the same wavelength can interfere with the body's natural preparation for sleep. ( ③ ) Specialized cells in the retina detect blue light and send signals to the brain's internal clock, suppressing the release of melatonin, the hormone that signals it is time to rest. ( ④ ) Studies have found that people who scroll through their phones in bed before sleeping take longer to fall asleep and experience lighter, more easily disrupted sleep than those who avoid screens. ( ⑤ ) Some devices now offer a night mode that shifts the display toward warmer tones, reducing blue light output in the evening. While this feature may help slightly, sleep researchers generally recommend limiting screen use altogether in the hour before bedtime for the best results.