영어 모의고사 (자동 편성)

Generation Z, typically defined as those born between the late 1990s and early 2010s, approaches shopping quite differently from previous generations. ①Having grown up with smartphones and social media, they research products extensively online before making even small purchases. Unlike older generations, ②who often valued brand loyalty above all else, many members of Generation Z prioritize a company's values. They also tend to favor secondhand and resale platforms, ③viewing sustainability as an important factor rather than an afterthought. Peer recommendations ④shared through short videos frequently ⑤carries more weight than traditional celebrity endorsements, since viewers see these creators as relatable rather than distant figures.

Aerobic exercise, such as jogging, swimming, or cycling at a steady pace, ①strengthens the heart by forcing it to pump larger volumes of blood with each beat. 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 ②beating fewer times per minute. This adaptation explains why trained athletes often have a much lower resting heart rate than sedentary individuals of the same age. Beyond the heart itself, aerobic activity encourages the body ③building new capillaries within muscle tissue, improving the delivery of oxygen and nutrients at a cellular level. Researchers have also found that regular aerobic exercise ④reduces inflammation throughout the body and improves the way cells respond to insulin. Because these benefits accumulate gradually rather than appearing overnight, most exercise physiologists recommend ⑤maintaining a consistent routine for at least several months before expecting dramatic improvements in endurance.

Wearable devices ①that track sleep have become enormously popular, promising a detailed breakdown of light, deep, and REM sleep each night. These gadgets typically rely on movement sensors and heart rate monitors ②to estimate sleep stages, since directly measuring brain activity would require equipment found only in a sleep laboratory. Independent studies ③compares wearable data with polysomnography, the gold-standard method used in clinical sleep labs, have found that consumer devices are reasonably accurate at distinguishing sleep from wakefulness but considerably less reliable at identifying specific sleep stages. Some trackers overestimate deep sleep, while others ④underestimate the amount of time spent in REM sleep, and the margin of error can vary widely between brands. Despite these limitations, many users have come ⑤to treat the nightly score generated by their device as an objective medical verdict, sometimes experiencing anxiety when the number falls below what they expect, a phenomenon researchers have begun calling orthosomnia.

Have you ever noticed your mood shifting after scrolling through a friend's ①gloomy post online? However, researchers have ②discovered that emotional contagion also occurs online, where only text or images are exchanged, without any physical presence at all. For instance, when someone posts a ③negative comment beneath a cheerful photo, the comments that follow often turn noticeably more negative in tone. In contrast, a single ④kind comment can shift an entire thread toward positivity within minutes. Consequently, many experts now argue that being ⑤careless of what we post matters more than we typically assume.

Sleep debt refers to the cumulative gap between the amount of sleep a person needs and the amount they actually get. (A) Unlike a financial debt, however, this deficit cannot simply be repaid with a single long weekend of rest. (B) When someone loses two hours of sleep every night for a week, the body does not treat the shortage as fourteen separate small losses; instead, it accumulates the deficit, and the resulting impairment in attention and mood can resemble that of a person who has been awake for an entire night. (C) Researchers have found that even modest, chronic sleep restriction gradually impairs reaction time and decision-making, often without the affected person noticing the decline. This is because subjective feelings of tiredness tend to plateau after a few days, even as objective performance keeps deteriorating. Consequently, people frequently underestimate how much sleep debt they are carrying until a demanding task suddenly exposes the accumulated cost.

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.

주어진 문장: The financial and reputational damage caused by a single attack can be enormous. As more businesses move their operations online, cyberattacks have become one of the most serious threats facing modern companies. ( ① ) Hackers now target everything from small retail websites to massive financial institutions, stealing sensitive data or demanding ransom payments. ( ② ) In response, demand for cybersecurity professionals has surged across nearly every industry. ( ③ ) These specialists design systems that detect suspicious activity, patch vulnerabilities before criminals can exploit them, and train employees to recognize phishing attempts. ( ④ ) Universities have responded by creating specialized degree programs, while many companies now offer scholarships to attract students into this growing field. ( ⑤ ) Despite this expansion, experts estimate that millions of cybersecurity positions worldwide remain unfilled.

This built-in schedule does not simply respond to the clock on the wall; it is shaped directly by light itself. 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. ( ① ) This clock is regulated primarily by a tiny cluster of neurons in the brain that responds to light entering through the eyes. ( ② ) When morning sunlight strikes the retina, the cluster signals the body to suppress sleep hormones and raise body temperature, preparing us for activity. ( ③ ) As evening approaches and light fades, the same mechanism triggers the release of melatonin, a hormone that promotes drowsiness. ( ④ ) Because this rhythm evolved around the natural cycle of day and night, modern habits such as staying indoors under artificial light or working night shifts can push the internal clock out of sync with the external environment. ( ⑤ ) Such misalignment does not simply cause tiredness; it has also been associated with digestive problems and reduced concentration, suggesting that timing matters as much as total sleep hours.

주어진 문장: Few shoppers realize how deliberately these small details are arranged to influence their behavior. Retailers use a variety of techniques designed to encourage customers to make unplanned purchases. ( ① ) Placing small, inexpensive items near checkout counters, for example, tempts shoppers who are already waiting in line with little else to do. ( ② ) Online stores achieve a similar effect through countdown timers that create a false sense of urgency, suggesting that a deal will vanish within minutes. ( ③ ) Bright colors, cheerful music, and pleasant scents are also carefully chosen to put customers in a relaxed mood. ( ④ ) Critics argue that these tactics exploit human psychology rather than genuinely informing consumers about a product's value. ( ⑤ ) Supporters of the industry insist that such techniques merely make shopping more enjoyable.

주어진 문장: In reality, however, that "original" price was sometimes never actually charged to any customer. Retailers frequently rely on sales events to boost short-term revenue, but the psychology behind these promotions is more complex than simple discounting. ( ① ) When a price is crossed out and replaced with a lower number, consumers instinctively perceive the new price as a bargain. ( ② ) This technique, known as anchoring, shapes how shoppers judge value by comparing prices rather than evaluating a product on its own merits. ( ③ ) Limited-time sales further intensify this effect, since a ticking clock encourages rushed decisions that leave little room for careful comparison. ( ④ ) Retailers also use phrases such as "while supplies last" to suggest scarcity, even when inventory remains plentiful. ( ⑤ ) Over time, frequent sales can actually train customers to wait for discounts rather than buy at full price.