영어 모의고사 (자동 편성)

Insomnia is rarely caused by a single factor; it usually emerges from an interaction between psychological stress and physiological arousal that ①keeps the body from settling into sleep. A common trigger is what researchers call cognitive hyperarousal, in which the mind continues ②to racing with worries about work, relationships, or even the inability to sleep itself, creating a frustrating cycle where anxiety about insomnia becomes a cause of insomnia. At the same time, the body's stress response system can become chronically activated, ③releasing hormones such as cortisol that keep heart rate and body temperature elevated at night, both of which interfere with the natural drop in arousal needed to fall asleep. Poor sleep habits, including irregular bedtimes and excessive screen use before bed, can further ④weaken the body's internal signals for sleep onset. Because these psychological and physiological factors reinforce one another, effective treatment for chronic insomnia addresses both the racing mind and the underlying pattern of physical tension, rather than ⑤relying on medication alone.

Sociologists use the term homophily to describe the tendency of people to form connections with others who share ①different backgrounds, opinions, or interests. This principle explains why classmates from the same major often become close friends, while coworkers with shared hobbies naturally gravitate toward one another. Because similarity reduces the effort required to understand another person's perspective, relationships built on shared traits tend to feel ②comfortable and require less negotiation. However, this same comfort can ③narrow the range of viewpoints someone encounters, since surrounding oneself with similar people limits exposure to different ideas. Social media platforms intensify this pattern through recommendation algorithms that suggest new friends based on shared interests or similar browsing history. As a result, users often find their online circles becoming increasingly ④homogeneous, filled with people who think and behave much like themselves. Recognizing this tendency allows individuals to make ⑤deliberate efforts to broaden their social networks.

Every Wednesday evening, a small group meets in the corner of a quiet cafe, coffee cups in hand, ready to talk about a book they have all just ①finished. This is a book club, and its members insist that reading the same novel together changes the experience ②completely. Alone, a reader usually forms one interpretation and ③frequently questions it again. In a group, however, one member's small comment about a minor character can suddenly change how everyone else understood the whole story. Members also say that having a discussion planned in advance pushes them to finish books they might otherwise put down halfway through. What began as a simple reading habit has slowly grown into one of the most meaningful ④friendships of their week, according to ⑤many members.

As cities have expanded across landscapes once covered with ①absorbent soil, impervious surfaces have turned stormwater from a resource that recharges groundwater into a hazard that floods streets and carries pollutants into waterways. Green infrastructure, which mimics the hydrological functions that natural landscapes once performed, offers planners a way to treat the city as a sponge rather than a ②rigid drainage pipe. Rain gardens, shallow depressions planted with deep-rooted vegetation, are designed to capture runoff from rooftops, allowing it to filter ③rapidly through soil before reaching underground aquifers. Permeable pavement, made of porous materials that let water pass directly through, serves a similar purpose along sidewalks, where asphalt would remain ④impenetrable. For example, cities that replaced pavement with permeable alternatives have reported ⑤notable reductions in flooding during storms that once overwhelmed sewers. However, engineers caution that green infrastructure cannot entirely replace conventional pipes in dense cores, where heavy runoff still requires structural reinforcement. Consequently, municipalities now regard green and gray infrastructure as complementary systems, each compensating for the other's limitations.

As efforts to ①curb greenhouse gas emissions intensify, industries unable to eliminate carbon dioxide from their processes have turned to a technology known as carbon capture and storage. This technology involves separating carbon dioxide from the exhaust of power plants before it is released into the atmosphere, then transporting the captured gas for underground injection. Once injected into porous rock formations, the gas is trapped beneath layers of impermeable rock that prevent it from escaping into the air. Proponents argue that carbon capture and storage functions as a bridge technology, allowing heavy industries to keep operating while more sustainable alternatives are ②developed. For instance, cement and steel production, both of which release carbon dioxide as an ③unavoidable byproduct of chemical reactions, are considered prime candidates for this approach. However, critics contend that the technology remains prohibitively ④cheap and that building pipelines requires investments few companies make voluntarily. Despite such concerns, many governments continue funding pilot projects, convinced that this technology will play an ⑤indispensable role in reaching emission targets.

Picture books are usually written for young children, but a growing number of adults are picking them up for themselves. At first glance, a picture book seems too ①simple for someone who has already learned to read long novels. However, many picture books deal with ②serious themes, such as loss, fear, and change, using only a few carefully chosen words. Because the text is short, every sentence carries extra weight, and readers naturally ③slow down to notice small details in the pictures. This slower pace can feel ④stressful for adults who are used to rushing through long articles and constant notifications. A picture book can also be finished in a single sitting, which makes it easy to return to the same story again and again. For these reasons, therapists and teachers sometimes recommend picture books not only to children but also to ⑤stressed adults who need a quiet moment.

Anyone who has ever promised to finish a project "by Friday," only to still be working on it weeks later, has experienced the planning fallacy ①firsthand. This term describes the ②occasional tendency of individuals and organizations to underestimate how long a task will take, how much it will cost, and how many complications will inevitably arise. What makes this bias particularly ③stubborn is that awareness of past failures rarely leads to more accurate predictions; a construction firm that finished its last three projects late will often insist, with genuine confidence, that this next project will be different. Researchers argue that planners focus almost exclusively on the specific steps of the current task while ignoring the ④broader statistical record of similar projects that came before. One proposed remedy, known as reference class forecasting, requires planners to ⑤deliberately consult outcomes from comparable past projects rather than relying solely on their own optimistic intuition.

Cities are frequently several degrees warmer than the surrounding countryside, a phenomenon known as the urban heat island effect, which intensifies in summer and threatens public health. This disparity arises largely because asphalt and concrete absorb solar radiation during the day and slowly release it as heat throughout the night, preventing urban areas from cooling down. Furthermore, the scarcity of vegetation in densely built areas removes a natural cooling mechanism, since plants lower temperatures by evaporating water from their leaves. To address this problem, urban planners _______________. One widely used solution involves reflective "cool" roofing engineered to reflect more sunlight than dark rooftops absorb. Another strategy, green infrastructure, incorporates rooftop gardens and tree-lined streets that provide shade while releasing moisture. In contrast, some cities have pursued permeable pavements that let water seep through and evaporate, cooling nearby surfaces. Collectively, these strategies show that reducing urban heat depends on combining approaches suited to a city's geography.

Classical economic theory long assumed that decision makers gather all relevant information, calculate every possible outcome, and select the single option that maximizes their benefit. (A) Herbert Simon, however, questioned this assumption, arguing that human beings operate under real constraints of time, knowledge, and mental capacity that make such exhaustive calculation practically impossible. (B) Instead of searching endlessly for the theoretically perfect choice, people typically stop once they find an option that seems good enough to meet their immediate needs, a strategy Simon termed satisficing. (C) A shopper comparing refrigerators, for example, rarely examines every model available; she instead sets a few practical criteria, such as price and size, and selects the first appliance that satisfies them adequately. This approach is not a failure of reasoning but rather a sensible adaptation to a world where information is costly and time is genuinely limited. Consequently, models assuming unlimited rationality often fail to predict actual behavior, while frameworks acknowledging these cognitive boundaries offer a far more realistic account of how ordinary decisions are actually made.

This is especially true because surprising or emotional claims get shared more quickly than careful, balanced reporting. A shocking headline can spread across social media within minutes, long before anyone checks whether it is actually true. ( ① ) Studies show that false stories often travel faster than accurate ones. ( ② ) To handle this flood of information, students today need a skill that previous generations rarely had to practice: checking a source before believing it. ( ③ ) Simple habits can make a real difference, such as looking for the original source of a claim, checking the date an article was published, and searching to see whether other trustworthy outlets are reporting the same story. ( ④ ) Media literacy classes now teach students to pause before they share anything, asking who wrote it and why. ( ⑤ ) This small pause, teachers say, is often the only thing standing between a curious reader and a piece of convincing misinformation.