영어 모의고사 (자동 편성)

For decades, athletes were taught to stretch a muscle and hold the position before any competition, ①believing that this practice alone would prevent injury. Recent research, however, has complicated that assumption considerably. Static stretching, in which a muscle ②is held at its longest length for an extended period, can actually reduce the muscle's ability to generate explosive force immediately afterward. Dynamic stretching, which involves controlled, repeated movement through a joint's full range of motion, ③appears to prepare muscles for activity without this temporary weakening effect. As a result, many coaches now recommend ④to save static stretching for after a workout, when it may help restore muscle length and reduce soreness, while ⑤reserving dynamic movements for the warm-up period before intense effort begins.

Psychologists who study daily behavior describe habits through a model ①called the cue-routine-reward loop. This theory explains that every habit begins with a cue, a signal that ②tell the brain to start an automatic behavior. The brain then performs a routine, ③which is the action itself, whether physical or mental. Finally, the brain receives a reward, a positive feeling that makes it want ④to repeat the same behavior. For example, a notification sound can act as a cue that leads a student to check a phone, and the relief from boredom becomes the reward. Similarly, opening a refrigerator out of habit rather than hunger shows how a routine can run without conscious thought. Because this loop operates automatically, breaking a bad habit requires changing the routine while keeping the same cue and reward. Understanding this structure helps people redesign daily patterns more effectively than ⑤relying on willpower alone.

The twenty-hour rule proposes that years of practice are not needed to become skilled at a new activity. Only about twenty hours of effort are needed to reach a ①worthless level. Unlike theories claiming true mastery requires ten thousand hours, this rule targets a more ②modest goal. That goal is simple competence for everyday use. According to supporters, practicing any new skill produces the ③fastest visible improvement, since a beginner has room to grow. Advocates emphasize that the twenty hours must be ④deliberate and focused, broken into short daily sessions rather than one long stretch. The hours should be aimed at fixing weaknesses rather than ⑤repeating what one already knows.

Scientists have identified certain gene variants that appear ①less frequently among elite endurance athletes than among the general population, along with a separate set that seems to favor explosive, power-based sports such as sprinting. One frequently studied variant, for instance, influences the proportion of slow-twitch versus fast-twitch muscle fibers a person naturally develops, a ratio that ②shapes whether a body leans toward endurance or explosive power. However, researchers caution strongly against interpreting these findings as evidence that athletic greatness is simply ③inherited. Even athletes who carry every favorable variant identified so far still require years of ④disciplined training to translate that genetic potential into actual performance. Genetics may set a rough ceiling on an individual's ultimate potential, but where any particular athlete lands within that range depends overwhelmingly on training quality, nutrition, coaching, and sheer ⑤determination.

Minji had tried for years to build a bedtime reading habit but always forgot once under the blanket. During summer, she found a method called habit stacking. It means attaching a new habit to an existing one so it acts as a reminder. Her existing habit was brushing her teeth every night, so she decided to place her book beside her toothbrush. After brushing her teeth, she would pick up the book, letting one action trigger the next. Within two weeks, opening the book after brushing felt almost automatic, requiring no conscious effort. Encouraged by this success, Minji stacked another habit onto her morning routine, reviewing vocabulary words after making her bed. She realized ___________. By the end of summer, both habits felt like steady parts of her routine, requiring no reminders.

Instead of typing keywords into a search bar, a growing number of people now simply upload a photo and let an algorithm figure out what it contains. Shoppers use it to find where an item seen on the street can be purchased, while students use it to identify plants, insects, or historical artworks in seconds. The system works by breaking an image down into countless small features, such as edges, colors, and shapes, then matching that pattern against millions of stored examples. It is not flawless, however; a blurry photo, an unusual camera angle, or an object partly hidden behind another can easily confuse the algorithm, leading to _______________.

Sleep is not a single, uniform state but a cycle that alternates between two very different modes: REM (rapid eye movement) sleep and non-REM sleep. (A) REM sleep, by contrast, brings rapid eye movements and brain activity resembling wakefulness, and is believed to help consolidate memories and process emotions. (B) A healthy night cycles through both stages several times, and disrupting either one can leave a person feeling unrested despite a full night in bed. (C) During non-REM sleep, particularly its deepest stage, the brain waves slow dramatically and the body focuses on physical repair.

Every cell in the human body follows an internal timer known as the circadian rhythm, a roughly twenty-four-hour cycle that governs when we feel alert and when we feel drowsy. (A) This clock is regulated primarily by a tiny cluster of neurons in the brain that responds to light entering through the eyes, signaling the body to suppress sleep hormones each morning. (B) As evening approaches and light fades, however, the same mechanism triggers the release of melatonin, a hormone that promotes drowsiness. (C) Because this rhythm evolved around the natural cycle of day and night, modern habits such as artificial light exposure or night shifts can push it out of sync, which has been linked to digestive problems and reduced concentration.

Whether such small warnings can meaningfully counter the daily flood of filtered images, however, remains an open question that researchers are only beginning to study. Opening most camera apps today reveals a row of filters that can smooth skin, brighten eyes, and reshape a jawline before a photo is even taken, all powered by AI models trained to recognize facial features in real time. ( ① ) What began as a playful novelty has become a default setting for many users, subtly adjusting nearly every selfie posted online. ( ② ) Psychologists have grown concerned about a specific consequence of this shift: people increasingly compare their unfiltered reflection in a mirror to a filtered version of themselves seen constantly on a screen. ( ③ ) This is a comparison that earlier generations never had to face. ( ④ ) Some social media platforms have responded by labeling heavily edited photos or banning certain filters that alter body shape. ( ⑤ )

주어진 문장: Yet not every worker benefits equally from these changes. Automation is transforming labor markets more quickly than economists predicted a decade ago. ( ① ) Factories once staffed by hundreds of workers now rely on robotic arms that assemble products with remarkable precision. ( ② ) This shift does not simply eliminate jobs; it also creates roles that never existed before, such as technicians who maintain robotic equipment. ( ③ ) Companies that invested early in automation often report steady increases in productivity, since machines handle repetitive tasks while employees focus on creative problem-solving. ( ④ ) Policymakers argue that retraining programs are essential to help displaced workers move into emerging fields. ( ⑤ ) Without such support, the benefits of automation may not be shared fairly across society.