영어 모의고사 (자동 편성)

The planning fallacy describes the tendency to ①systematically underestimate how long a task will take, even when experience suggests otherwise. Psychologists ②who studied this bias found that people focus mainly on an idealized, best-case version of a project. They focus less on how similar projects actually unfolded before. A student who insists an essay takes two hours, despite ③needing five hours for every previous essay, shows a clear instance of the fallacy. Large construction projects offer another example. Officials frequently predict completion dates that later ④proves far too optimistic once delays appear. Some researchers recommend a technique called reference class forecasting, ⑤comparing a new task to similar completed tasks.

Every day, email providers quietly block billions of ①unwanted messages before they ever reach a user's inbox, a task that would be impossible without an AI filtering system running constantly in the background. The filter ②examines each incoming message for suspicious patterns, including certain keywords, unusual sender addresses, and formatting tricks that scammers commonly rely on to slip past detection. What makes the system effective is that it ③stops learning after launch, since whenever a user marks a message as spam or rescues a message mistakenly filtered out, that action becomes new training data, sharpening the filter's future decisions. This creates a constant back-and-forth, since spammers study which messages get blocked and then ④adjust their wording to slip through again. As a result, spam filtering is less like a fixed wall and more like an ⑤ongoing contest, with each side continuously adapting to outsmart the other.

When people consistently sleep too little, the body's hormonal balance shifts in ways that can quietly encourage weight gain. Two hormones in particular play opposing roles in regulating appetite: leptin signals fullness to the brain, while ghrelin stimulates the sensation of hunger. Studies show that sleep deprivation lowers leptin levels while raising ghrelin levels, so _______________, even after a normal-sized meal. At the same time, insufficient sleep interferes with how efficiently the body processes glucose, making cells less responsive to insulin and leaving more sugar circulating in the bloodstream than usual. Over months or years, this combination of increased appetite and reduced insulin sensitivity can contribute to steady weight gain and raise the risk of developing type 2 diabetes. Because these effects build up so gradually, many people never connect their shifting eating habits or worsening blood sugar to something as ordinary as a few lost hours of sleep each night.

Many economists have studied how automation affects different sectors of the economy, and their research reveals a consistent pattern. (A) For example, manufacturing plants that adopted robotics saw production speed double within five years, while the number of routine assembly jobs fell sharply. (B) As a result, workers today are encouraged to develop skills that complement machines rather than compete with them, such as creativity and critical thinking. (C) At first, automation mainly affected repetitive manual tasks in manufacturing, but it has since spread into administrative and even creative fields.

Temporal discounting offers a useful lens for understanding why long-term goals so often lose out to short-term pleasures. (A) Consequently, replacing distant, abstract goals with smaller, immediate milestones can make future rewards feel psychologically closer and more motivating. (B) Research shows that people consistently prefer a smaller reward available today over a considerably larger reward promised weeks later. (C) This preference persists even when the delayed reward is clearly the more rational choice, revealing how strongly immediacy influences decision-making.

Across many countries, high schools begin classes early in the morning, often before eight o'clock. (A) Researchers who study this mismatch argue that the underlying problem is not laziness or poor discipline among students, but a scheduling system built around adult rhythms rather than adolescent ones. (B) This schedule assumes that teenagers can simply go to bed earlier to compensate, but biology tells a different story, because the body's internal clock shifts later during adolescence, delaying the release of melatonin until well after ten at night. (C) As a result, most teenagers are not physiologically ready to fall asleep until much later than adults, and when early start times force them to wake before completing a full sleep cycle, the mismatch accumulates into a chronic sleep debt.

Soojin's rise as a content creator did not happen overnight, despite how it may have appeared to outsiders. (A) One video demonstrating a simple recipe, however, unexpectedly reached millions of viewers and changed everything almost instantly. (B) For months, she posted consistently despite earning very little attention, often doubting whether she should continue at all. (C) After that unexpected success, brands began reaching out, eventually allowing her to earn more than most entry-level jobs would pay.

The gap between popular belief and scientific evidence about habit formation has surprised many researchers. (A) This finding suggests that people who quit a new habit after only three weeks may simply be giving up too early, not failing at the habit itself. (B) Their results showed that habits took an average of sixty-six days to become automatic, far longer than the widely repeated twenty-one-day figure. (C) To test how long habit formation truly takes, scientists asked volunteers to track a new daily behavior for several months.

The psychological weight of that pressure can undermine skills that otherwise feel completely automatic in practice. Elite athletes often perform in front of enormous crowds with championships, contracts, and years of training riding on a single moment. ( ① ) Sports psychologists explain that intense anxiety narrows attention and disrupts the smooth, unconscious execution of well-learned movements, a phenomenon sometimes called choking under pressure. ( ② ) Rather than trying to eliminate nervousness entirely, which research suggests is nearly impossible, many trainers now teach athletes to reinterpret the physical symptoms of anxiety, such as a racing heart, as signs of readiness rather than danger. ( ③ ) Structured breathing exercises and pre-performance routines also help athletes regain a sense of control before a decisive moment. ( ④ ) Over time, repeated exposure to high-pressure situations in practice, deliberately simulated to resemble real competition, allows athletes to build tolerance the same way their muscles adapt to physical training. ( ⑤ )

주어진 문장: Slowly, though, she began to question whether all of these possessions truly made her life better. Jina used to fill her apartment with items she rarely used, believing that owning more things would make her happier. ( ① ) 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. ( ② ) Frustrated, she decided to try a minimalist lifestyle, keeping only objects that served a clear purpose or brought her genuine joy. ( ③ ) At first, friends questioned why she was giving away perfectly good furniture and clothing. ( ④ ) Gradually, however, she noticed that her small apartment felt calmer and easier to manage. ( ⑤ ) She also realized that she spent significantly less money once she stopped buying things impulsively to fill emotional gaps.