영어 모의고사 (자동 편성)

Building brand loyalty has traditionally been considered one of the most valuable goals in marketing, since loyal customers ①tend to spend more and recommend products to others. Companies invest significant resources in loyalty programs, ②offering points, discounts, and exclusive access to encourage repeat purchases. Genuine loyalty, critics contend, should be earned through consistent quality and honest treatment of customers, not through artificial incentives that merely ③delays a customer's departure. Furthermore, excessive focus on retaining existing customers can cause companies ④to neglect innovation, since they assume loyal buyers will continue purchasing regardless of improvements. Relying solely on loyalty programs without addressing underlying product quality may ultimately ⑤backfire.

Smartphones, tablets, and computer screens all emit a significant amount of blue light, a short-wavelength light that our eyes are especially ① sensitive to. During the day, exposure to blue light from the sun helps keep us alert and mentally sharp, which is generally beneficial. At night, however, the same wavelength can interfere with the body's natural preparation for sleep. Specialized cells in the retina ② detect blue light and send signals to the brain's internal clock, ③ suppressing the release of melatonin, the hormone that signals it is time to rest. Studies have found that ④ 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. 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 ⑤ limit screen use altogether in the hour before bedtime for the best results.

Sleep debt refers to the cumulative gap between the amount of sleep a person needs and the amount they actually get. Unlike a financial debt, however, this deficit cannot simply ① be repaid with a single long weekend of rest. 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 ② who has been awake for an entire night. Researchers have found that even modest, chronic sleep restriction gradually impairs reaction time and decision-making, often without the affected person ③ noticing the decline. This is because subjective feelings of tiredness tend to plateau after a few days, even as objective performance keeps ④ deteriorate. Consequently, people frequently underestimate how much sleep debt they are carrying until a demanding task suddenly ⑤ exposes the accumulated cost.

Team sports place athletes in a uniquely social form of competition, one where individual skill alone rarely ① determines the outcome of a match. Sports psychologists have long studied why some groups of talented individual players fail ② to perform as a cohesive unit while other, less individually skilled teams consistently exceed expectations. Trust among teammates appears to be a decisive factor, since players who believe their teammates will reliably fulfill their roles are more willing ③ to take the calculated risks that winning often requires. Clear and consistent communication during high-pressure moments further ④ reduce the hesitation and confusion that can unravel a team's coordination in front of a crowd. Interestingly, researchers have found that teams which deliberately build informal social bonds off the field tend ⑤ to display better on-field cohesion.

Parents and coaches sometimes worry that heavy resistance training might damage the growth plates in a young athlete's bones, cartilage regions near the ends of long bones that are ① responsible for lengthening as a child develops. This concern kept strength training out of many youth programs for decades. However, extensive research over the past twenty years has found ② little evidence that properly supervised resistance training harms growth plates in healthy children. The actual risk arises not from lifting weights itself but from ③ poor technique, excessive load, and inadequate supervision. Major pediatric and sports medicine organizations now generally agree that structured strength programs, when taught with correct form and appropriate weight, can safely ④ improve bone density, coordination, and injury resistance in young athletes. The key variable, in other words, is not whether children lift weights but how carefully that training is ⑤ ignored.

A flexitarian is someone who mainly eats plant-based meals but occasionally includes meat or fish, unlike a ①strict vegetarian who avoids animal products entirely. This flexible diet has recently ②lost attention as a practical way to fight climate change, since raising livestock produces a ③significant portion of global greenhouse gas emissions. Cattle, in particular, release large amounts of methane, a gas far more powerful than carbon dioxide at trapping heat in the atmosphere. By replacing just a few meat-based meals each week with vegetables, grains, or legumes, individuals can ④noticeably shrink their carbon footprint without giving up meat completely. Nutritionists also emphasize that flexitarian eating is easier to maintain than full vegetarianism, because it allows flexibility rather than demanding absolute discipline. Therefore, many environmental groups now promote flexitarianism as a ⑤realistic first step, believing that gradual change, rather than sudden restriction, is more likely to spread widely across society.

A short nap taken in the early afternoon, often called a power nap, can noticeably sharpen attention and mood without leaving a person groggy afterward. The key lies in timing: naps limited to roughly twenty minutes allow the brain to pass through the lightest stages of sleep while avoiding the deeper stages associated with slow-wave activity. If a nap extends much beyond that window, _______________. Laboratory studies comparing napping and non-napping groups have repeatedly shown that a brief nap improves reaction time and short-term memory almost as effectively as a full night of extra rest. Interestingly, the benefit appears strongest when the nap occurs several hours after waking, since this is when the body's natural dip in alertness makes rest most effective. For this reason, many workplaces now designate quiet rooms where employees can recharge briefly during the day.

For centuries, dreams have fascinated scientists and philosophers alike, yet no single theory fully explains why the sleeping brain generates such vivid and often bizarre experiences. (A) Another theory proposes that dreams serve a more practical function, allowing the brain to rehearse responses to threats without any real danger, a kind of nightly simulation that may have offered early humans a survival advantage. (B) Still other researchers argue that dreaming is simply a byproduct of the brain organizing memories rather than serving any independent purpose, and because these theories rest on indirect evidence, none has been conclusively proven, leading many scientists to suspect that dreaming may serve several functions simultaneously. (C) One prominent idea suggests that dreaming helps the brain process emotional experiences, replaying difficult events in a safe, low-stakes environment so that their emotional intensity gradually fades.

주어진 문장: Even small purchasing decisions, they argue, can accumulate into meaningful pressure on how companies operate. Value-based consumption refers to the practice of spending money on products or experiences that align with a person's personal beliefs, even if cheaper alternatives exist. ( ① ) Rather than simply seeking the lowest price, value-conscious consumers consider factors such as labor conditions, environmental impact, and community benefit before making a purchase. ( ② ) Some critics dismiss this approach as impractical, arguing that most people cannot afford to prioritize ethics over affordability in daily life. ( ③ ) However, supporters point out that value-based spending does not require constant sacrifice; it often means buying fewer, higher-quality items rather than accumulating cheap goods that wear out quickly. ( ④ ) This shift also encourages companies to improve their practices, since consumer demand increasingly rewards transparency and responsibility. ( ⑤ ) For example, a clothing brand that openly shares its supply chain information may attract loyal customers willing to pay slightly more.

Its influence, in fact, can persist quietly long after any feeling of alertness has faded. Caffeine is the most widely consumed stimulant in the world, prized for its ability to sharpen focus and fight off fatigue within minutes of consumption. ( ① ) It works by blocking adenosine, a chemical that gradually builds up in the brain throughout the day and makes us feel increasingly sleepy the longer we stay awake. ( ② ) By occupying the receptors that adenosine would normally bind to, caffeine tricks the brain into feeling alert even when the body has accumulated significant sleep pressure. ( ③ ) The effects, however, last far longer than most people realize. Because caffeine can remain active in the bloodstream for five to six hours, a cup of coffee consumed in the late afternoon may still be interfering with the ability to fall asleep at midnight. ( ④ ) Even when people do not consciously notice difficulty falling asleep, caffeine has been shown to reduce the amount of deep, restorative sleep obtained later in the night. ( ⑤ ) For this reason, many sleep specialists advise avoiding caffeine after early afternoon.