영어 모의고사 (자동 편성)

A loud, jarring alert sound ①interrupting a phone's normal notifications usually means one thing: a government agency has issued an emergency text to everyone in a specific area, warning of anything from a flash flood to a missing child. These messages are designed ②reaching people instantly, without requiring anyone to download an app or subscribe to a service in advance, since a disaster rarely waits for someone to prepare. Some residents complain that the alerts arrive too frequently or for events that feel minor, ③leading a small number of people to silence the notifications altogether. Safety officials warn that this response defeats the entire purpose of the system, since a person who ④mutes every alert for convenience will also miss the one message that truly demands immediate action. Unlike a weather app that must ⑤be checked voluntarily, an emergency alert pushes urgent information directly to a person's pocket.

Even highly capable individuals can make disastrous collective decisions once they ①absorbing into a tightly knit group, a phenomenon psychologist Irving Janis termed groupthink. Within cohesive committees, boards, and advisory councils, members often prioritize consensus and group harmony over a rigorous evaluation of alternatives, ②silencing doubts rather than risking the discomfort of dissent. Janis identified several warning signs, including an illusion of invulnerability that leads a group ③to underestimate risk, pressure on dissenters to fall in line, and self-appointed mindguards who shield the group from information that might disrupt its confidence. Sociologists extend this analysis beyond small committees, ④noting that entire organizations can develop cultures that reward conformity and punish employees who raise inconvenient questions. Historical inquiries into policy failures and corporate disasters frequently reveal that critical information existed within the organization but never ⑤reached decision makers.

Science labs feel far safer than they actually are, largely because the equipment looks harmless and the experiments are carefully ①planned by a teacher. This false sense of security leads some students ②to skip small precautions, such as wearing safety goggles for a "simple" experiment or tasting a substance out of curiosity. Chemical reactions, however, do not distinguish between a professional laboratory and a classroom; a small amount of the wrong substance ③splashed into an eye can cause permanent damage within seconds, regardless of how basic the experiment seemed. Teachers repeatedly emphasize ④to read each instruction before touching any material, since even a familiar-looking chemical can behave unpredictably when combined with something new. Most laboratory accidents, researchers note, do not happen during advanced or unusual experiments but during routine ones that students ⑤have performed many times before.

Accidents rarely wait for a doctor ①to be nearby, which is why basic first aid knowledge can make a critical difference in the first few minutes after an injury occurs. Many students assume that only professionals should touch an injured person, ②fearing that any mistake might make things worse. In reality, a few simple actions, such as applying steady pressure to a bleeding wound or keeping an unconscious person's airway clear, can prevent a minor injury from ③becoming a life-threatening one. Waiting passively for an ambulance, rather than doing anything at all, ④are often the more dangerous choice, since every minute without basic care allows a treatable injury to worsen. Of course, first aid is never a substitute for professional medical treatment, and it ⑤should never replace an emergency call.

Stairs seem too ①ordinary to be dangerous, which is why many people treat them carelessly, texting, carrying an armful of books, or skipping two steps at a time. Emergency room records tell a ②different story: falls on stairways send more people to the hospital each year than almost any other household accident. Familiarity ③discourages a kind of autopilot mode, in which a person stops looking at each step and instead relies on memory of where the stairs should be, a habit that fails the moment something ④unexpected occurs, such as a missing step or a loose railing. Safety officials recommend a few ⑤unglamorous habits: keep one hand free, use the handrail, and turn on the light before stepping onto a dark staircase.

The ecological footprint, a widely cited measure of how much biologically productive land and water a population requires to sustain its consumption, has become one of the most ①familiar tools for communicating humanity's environmental impact. By converting diverse activities, from driving to eating meat, into a single unit of land area, the measure allows policymakers to grasp whether a lifestyle exceeds what the planet can regenerate. This simplicity, however, is also the source of its most ②occasional criticism. Because the footprint aggregates dissimilar impacts, such as carbon emissions and water scarcity, into one composite figure, it can ③obscure important differences among problems that require distinct policy responses. A region might reduce its footprint by lowering carbon emissions while simultaneously depleting a local aquifer, yet the aggregate number could still appear to improve, ④concealing damage that demands urgent attention. Furthermore, the method assumes that all bio-productive land is roughly ⑤interchangeable, treating a hectare of forest as equivalent to a hectare of farmland, even though the two provide markedly different ecological functions.

When the body fights off an infection, the immune system relies heavily on adequate sleep to function effectively. During deep sleep, the body produces and releases cytokines, proteins that help regulate immune responses and coordinate the fight against harmful invaders. People who consistently sleep fewer than six hours a night show measurably weaker antibody responses after vaccination compared with those who sleep seven or eight hours, suggesting that _______________. Chronic sleep deprivation also appears to promote low-grade inflammation throughout the body, a state that has been linked to a higher risk of heart disease. Rather than being a passive state, sleep functions as an active period during which the immune system repairs itself and prepares for future threats.

Physical education class often feels like the one period of the day when students can finally move freely, which sometimes leads them to skip the warm-up routine that teachers insist on before any real activity begins. Cold muscles, however, are noticeably less flexible than warmed ones, and _______________. Coaches often compare an unwarmed muscle to a cold rubber band that snaps rather than stretches under sudden pressure.

Dual coding theory, first proposed to explain why certain kinds of information are remembered more readily than others, holds that the mind processes verbal and visual material through two partially independent channels rather than a single unified system. (A) Consequently, dual coding theory has profound implications for instructional design, suggesting that combining carefully chosen visuals with concise verbal explanations can strengthen students' long-term retention of complex material. (B) According to this account, words and other linguistic symbols are encoded primarily through a verbal channel that represents meaning in an abstract, sequential form, while pictures and concrete objects are encoded through an imagery channel that preserves spatial and perceptual detail. (C) When information engages both channels simultaneously, as when a textbook pairs a written explanation with an accompanying diagram, the resulting memory trace benefits from two separate, mutually reinforcing pathways of retrieval rather than just one. This redundancy explains the well-documented picture superiority effect, whereby concrete, easily visualized words tend to be recalled more accurately than abstract terms that resist mental imagery.

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. (A) If a nap extends much beyond that window, the sleeper risks waking during deep sleep, which produces a foggy, disoriented feeling known as sleep inertia that can persist for thirty minutes or more. (B) 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. (C) 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.