영어 모의고사 (자동 편성)

As solar and wind power expand rapidly across national grids, engineers face a challenge that ①receive far less public attention than the construction of the generating facilities themselves. Unlike conventional power plants, which can adjust their output to match demand at almost any moment, solar panels and wind turbines generate electricity only when sunlight or wind is available, ②producing supply that fluctuates constantly. One proposed solution involves large-scale battery storage systems, ③which absorb surplus electricity generated during periods of high output and release it later when generation declines. Grid operators must therefore invest in infrastructure capable of ④accommodating this variability, rather than assuming renewable sources can simply replace fossil fuels without adjustment. Without such investment, integrating renewable energy could paradoxically undermine the very reliability that modern electricity grids are ⑤expected to provide.

Two years ago, I ①began volunteering at an animal shelter near my neighborhood on weekends. My tasks included feeding animals, cleaning cages, and ②help visitors choose a pet to adopt. Over time, I noticed how much I enjoyed calming nervous or injured animals. One rainy afternoon, a frightened puppy ③refused to eat, and I sat quietly beside it for over an hour until it finally relaxed. Watching the puppy trust me changed something inside me, ④which led me to research careers in veterinary medicine. My volunteer work, ⑤which started as a simple hobby, slowly turned into the clearest career direction I had ever found.

When individuals face uncertainty about how to behave, they frequently look to the actions of others for guidance, ①assuming that a behavior adopted by many people is more likely to be correct or appropriate than one adopted by few, a tendency known as social proof. This reliance on collective behavior can be remarkably efficient, since it allows individuals ②to benefit from the accumulated judgment of a crowd without having to gather and evaluate every relevant fact themselves. However, social proof can also lead entire groups astray when the initial signal that ③trigger imitation is itself unreliable or coincidental. A restaurant that happens to attract a long line early in the evening may continue attracting customers throughout the night simply because passersby ④interpret the queue as evidence of superior quality. Financial markets exhibit an analogous pattern: investors who observe others buying a particular asset often join the buying themselves, ⑤reasoning that so many participants cannot all be mistaken.

Have you ever noticed that an unfinished task ①keeps returning to your mind long after you stopped working? This phenomenon was first noticed by psychologist Bluma Zeigarnik, who saw ②that waiters remembered unpaid orders better than paid ones. Her observation led to what is now called the Zeigarnik effect: people remember incomplete tasks more vividly than ③completed ones. According to this theory, the mind maintains mental tension until a task reaches closure, ④keeping the unfinished task active in memory. Once the task is completed, the tension is released, and the mind ⑤let go of the details.

Communication scholar Elisabeth Noelle-Neumann proposed the spiral of silence theory to explain why certain opinions ①dominate public discussion while others fade into invisibility. According to this theory, individuals constantly observe their surrounding environment to judge which opinions are widely accepted and which are not. When people sense that their own view belongs to a minority, they often choose to stay ②vocal rather than risk social isolation or criticism. This silence, however, creates a distorted impression that the minority opinion is even ③rarer than it actually is, discouraging additional supporters from speaking up. Over time, this cycle spirals downward, allowing the dominant opinion to appear increasingly ④unanimous while dissenting voices disappear from visible conversation. Social media platforms can intensify this spiral, since visibility metrics make popular opinions instantly ⑤noticeable while unpopular ones remain hidden.

As more schools shift toward digital textbooks and online assignments, a student without reliable internet access at home faces a disadvantage that has little to do with talent or effort. During recent years, this gap became ①impossible to ignore, as families in rural areas or low-income neighborhoods struggled to complete schoolwork that assumed a stable connection and a personal device. Some policymakers initially treated internet access as a ②convenience, comparable to cable television, rather than as infrastructure essential to modern life. That assumption is increasingly being reconsidered, particularly as more essential services move online by default. Closing this divide will require ③far less than simply distributing devices; it will demand ④sustained investment in the physical networks that carry information into every home, ⑤regardless of income or location.

Many teenagers check their social media accounts dozens of times a day, worried that they might miss something ①important happening among their friends. This anxiety, known as FOMO, or the fear of missing out, arises when people believe that others are enjoying experiences from which they themselves are excluded. For example, a student scrolling through photos of a party she was not invited to may suddenly feel a wave of ②loneliness and regret, even though the event has already ended. Constantly refreshing feeds to avoid missing such updates, however, makes it difficult to concentrate on schoolwork or conversations happening in the present moment. Moreover, this endless comparison with curated highlights of other people's lives tends to ③deepen feelings of anxiety rather than ④worsen them. Therefore, students should learn to ⑤limit their social media use and focus more attention on the relationships and activities directly in front of them.

Many people believe that building a new habit requires strong willpower or motivation. However, psychologist BJ Fogg argues that habits form more easily when a behavior itself becomes simple to perform. His theory, called the Fogg Behavior Model, states that ___________. When motivation is low, the task must be made extremely easy, or it will not happen at all. For instance, a person who wants to exercise daily succeeds more often by committing to one push-up than to a long workout. Fogg calls this idea the law of least effort, since people naturally choose the option requiring the least energy. A student who wants to read more might leave a book open on the desk rather than setting a vague goal. By lowering the required effort, people reduce the ability barrier and make steady action far more achievable.

My younger brother was especially excited to see the huge whale model hanging from the ceiling. Last Saturday, the temperature outside reached almost thirty-eight degrees, so my family decided to stay indoors for the entire day. ( ① ) At first, I worried that staying inside would be boring, but we found several fun activities to enjoy together. ( ② ) In the morning, we visited a nearby indoor climbing gym, where I learned some basic climbing techniques from an instructor. ( ③ ) After lunch, we went to a small museum near our house that had a special exhibition about ocean animals. ( ④ ) In the afternoon, we played board games at a cafe that offered dozens of different games. ( ⑤ ) By the time we got home, I realized that indoor activities could be just as exciting as outdoor ones.

Meanwhile, the underlying technology continues to advance regardless of whether the diplomacy meant to govern it keeps pace. Military researchers have developed weapons systems capable of identifying and engaging targets without a human pressing the final button, a prospect that has alarmed arms control experts for over a decade. ( ① ) Advocates within defense agencies argue that autonomous systems can react faster than any human operator and may even reduce casualties. ( ② ) Human rights organizations counter that removing a person from the final decision strips away moral responsibility at the exact moment it matters most. ( ③ ) Diplomatic negotiations toward an international treaty have repeatedly stalled, partly because military powers disagree on how to define autonomy precisely enough to regulate it. ( ④ ) This disagreement has left the treaty process without a clear path forward. ( ⑤ )