영어 모의고사 (자동 편성)

A navigation app calculating a route rarely relies on distance alone; instead, it constantly weighs real-time traffic reports, past congestion patterns for that time of day, and even data from other drivers' phones ① currently on the road. This flood of information allows the app ② to reroute a driver away from a sudden accident within seconds, often before the driver has any idea the accident ③ occurring at all. The convenience comes at a cost that few passengers consider, however. When thousands of drivers are simultaneously ④ redirected onto the same shortcut, that quiet side street can quickly become as congested as the highway it was meant to help travelers avoid. Residents of these once-quiet neighborhoods have increasingly complained about the sudden surge of unfamiliar traffic, ⑤ arguing that an algorithm optimizing for individual convenience can end up creating a new problem.

Instead of typing keywords into a search bar, a growing number of people now simply upload a photo and let an algorithm figure out what it contains. This process, known as reverse image search, compares the visual patterns in a picture against a massive database, identifying everything from a landmark in the background to the exact model of a pair of sneakers. Shoppers use it to find where an item seen on the street can be purchased, while students use it to ① identify plants, insects, or historical artworks in seconds. The system works by breaking an image down into countless small features, such as edges, colors, and shapes, then matching that pattern against millions of stored examples. It is ② flawless, however; a ③ blurry photo, an unusual camera angle, or an object partly hidden behind another can easily ④ confuse the algorithm, leading to search results that have ⑤ nothing to do with the original picture at all.

When a customer opens a company's website at midnight with a billing question, an actual employee is ① common to be available, which is exactly the gap that customer service chatbots were built to fill. These programs can instantly answer common questions, track packages, and process simple refunds without making anyone wait on hold. Companies ② value them because a single chatbot can handle thousands of conversations simultaneously, something no call center could ever match. Yet the technology has clear ③ boundaries. When a customer's problem is unusual, emotionally charged, or simply does not fit the chatbot's script, the automated replies can feel frustratingly ④ circular, repeating the same suggestion no matter how the question is rephrased. Many companies have responded by designing chatbots to recognize their own limits, automatically transferring a frustrated customer to a human agent before the conversation turns into a source of ⑤ complaint rather than a solution.

Exercise does far more than strengthen muscles and the heart; it also produces ① measurable changes within the brain itself. During sustained physical activity, the body releases a protein called brain-derived neurotrophic factor, which supports the growth of new neurons and ② strengthens connections between existing ones, particularly in regions associated with memory and learning. Studies comparing physically active students to sedentary peers have repeatedly found that the active group performs ③ better on tests of attention and problem-solving, even when the exercise session ends well before the test begins. Researchers believe that exercise increases blood flow to the brain, delivering oxygen and nutrients more efficiently, while also ④ raising levels of stress hormones that can interfere with clear thinking. Interestingly, aerobic activities such as running or swimming appear to produce more ⑤ pronounced cognitive benefits than purely strength-based training.

Smartphones, tablets, and computer screens all emit a significant amount of blue light, a short-wavelength light that our eyes are especially 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 detect blue light and send signals to the brain's internal clock, which results in _______________. Studies have found that 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 limiting screen use altogether in the hour before bedtime for the best results.

Many countries and companies today have adopted the goal of carbon neutrality, aiming to balance the greenhouse gases they emit with the amount they remove from the atmosphere. (A) Achieving this goal typically requires several sequential stages rather than a single sudden action; first, organizations attempt to reduce emissions directly by replacing fossil fuels with renewable energy sources such as solar or wind power. (B) Critics argue, however, that some companies exploit offsetting too early, using it to avoid making genuine reductions, so experts insist that a credible roadmap must always prioritize actual emission cuts before relying on compensation. (C) Next, they improve efficiency throughout their operations, minimizing the energy wasted during production and transportation, and only after these measures have been maximized do most organizations turn to offsetting, funding outside projects such as reforestation.

주어진 문장: This fear of missing out, often shortened to FOMO, drives many shoppers to act faster than they normally would. Limited-edition products are goods that are released in small quantities for a short period of time. ( ① ) Many companies use this strategy because scarcity naturally increases how much people desire an item. ( ② ) When consumers believe that a product will disappear soon, they often feel pressured to buy it immediately rather than wait. ( ③ ) For instance, a sneaker company that releases only a few thousand pairs of a special design can generate long lines outside stores overnight. ( ④ ) However, this psychological pressure can lead to purchases that are driven by fear rather than genuine need. ( ⑤ ) As a result, some shoppers later regret spending money on products they rarely use afterward.

This is precisely the kind of disruption that white noise is designed to prevent. Many people struggling to fall asleep in noisy environments turn to white noise machines, devices that emit a steady, uniform sound covering a broad range of frequencies. ( ① ) The appeal lies in a phenomenon called auditory masking, in which a constant background sound makes sudden noises, such as a slamming door, less noticeable to the sleeping brain. ( ② ) Without this masking effect, an abrupt change in sound is far more likely to trigger a brief awakening, even if the sleeper does not consciously remember it the next morning. ( ③ ) Studies comparing sleep in quiet rooms with sleep alongside white noise have found that participants using white noise experienced fewer of these brief awakenings and reported feeling more rested. ( ④ ) However, researchers caution that the benefit depends heavily on volume and consistency, since noise that is too loud or that varies unpredictably can itself become a source of disruption rather than a remedy. ( ⑤ ) Such backfiring effects remind us that more sound is not always better for a restless sleeper.

주어진 문장: Recognizing these problems, environmental groups have urged the fashion industry to rethink how clothes are made and discarded. Fast fashion refers to cheap, trendy clothing produced quickly and replaced almost as fast as it is bought. ( ① ) Because these garments are designed to be worn only a few times, huge amounts of fabric end up in landfills every year, and the dyeing process pollutes rivers near factories. ( ② ) In contrast, a growing number of brands are turning toward the circular economy, an economic model in which materials are reused, repaired, or recycled instead of being thrown away after a single use. ( ③ ) For example, some companies collect old clothes, break down the fibers, and weave them into new fabric, while others let customers rent outfits for special occasions rather than buying garments they will barely wear. ( ④ ) These approaches keep resources circulating within the system longer, reducing demand for raw materials. ( ⑤ ) Therefore, shifting from a throwaway habit toward a circular one may be essential for making the fashion industry sustainable.

The technology listens to audio, breaks it into individual sounds, and matches those sounds against a massive library of words and phrases to predict what was actually said. Turning on automatic captions used to mean settling for garbled text full of obvious errors, but recent speech-recognition models have made same-language captions accurate enough that many viewers now leave them on by default, even when watching content in their native language. ( ① ) For viewers who are deaf or hard of hearing, this improvement has quietly transformed everyday access to video content that once required a human transcriber and a considerable amount of time to caption properly. ( ② ) The system still stumbles over overlapping speakers, strong accents, and specialized vocabulary such as medical or technical terms. ( ③ ) It occasionally produces captions that are unintentionally funny. ( ④ ) Even with these flaws, most users agree that imperfect captions are far more useful than no captions at all. ( ⑤ )