영어 모의고사 (자동 편성)

Wearable devices ①that track sleep have become enormously popular, promising a detailed breakdown of light, deep, and REM sleep each night. These gadgets typically rely on movement sensors and heart rate monitors ②to estimate sleep stages, since directly measuring brain activity would require equipment found only in a sleep laboratory. Independent studies ③compares wearable data with polysomnography, the gold-standard method used in clinical sleep labs, have found that consumer devices are reasonably accurate at distinguishing sleep from wakefulness but considerably less reliable at identifying specific sleep stages. Some trackers overestimate deep sleep, while others ④underestimate the amount of time spent in REM sleep, and the margin of error can vary widely between brands. Despite these limitations, many users have come ⑤to treat the nightly score generated by their device as an objective medical verdict, sometimes experiencing anxiety when the number falls below what they expect, a phenomenon researchers have begun calling orthosomnia.

When a customer opens a company's website at midnight with a billing question, an actual employee is ①common 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 ②value them because a single chatbot can handle thousands of conversations simultaneously, something no call center could ever match. Yet the technology has clear ③boundaries. When a customer's problem is unusual, emotionally charged, or simply does not fit the chatbot's script, the automated replies can feel frustratingly ④circular, 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 ⑤complaint rather than a solution.

Many teachers and parents worry that today's teenagers are losing the ability to read long, complex texts. National test scores show a slow decline in reading comprehension over the past ten years, and some experts blame smartphones and short videos for shortening students' attention spans. Other researchers disagree with this simple explanation. They point out that teenagers today read constantly, just in different forms, such as text messages, captions, and online articles. According to this view, the real problem is not that students read less overall, but that _______________. A team of researchers recently found that students who read at least one full book every month scored noticeably higher on comprehension tests than students who mainly read short online posts.

A food allergy can turn an ordinary snack shared between classmates into a medical emergency within minutes, which is why schools now take ingredient labels more seriously than they once did. For someone with a severe allergy, _______________. Friends of allergic students sometimes assume that a small bite would not cause serious harm, not realizing that the amount needed to trigger anaphylaxis can be smaller than a crumb.

Building a reading habit does not usually start with a big decision to read more. (A) It often starts with very small, easy steps, such as keeping a book in a bag or choosing a fixed time each day to read for just ten minutes. (B) These small routines work because they lower the effort needed to begin; once a student opens a book, continuing to read feels much easier than starting did. (C) Over weeks, these tiny actions add up, and reading slowly becomes something the student simply does, rather than something the student has to force.

Walking down a crowded street while staring at a phone screen has become such a common sight that it barely draws attention anymore, even though the habit turns a pedestrian into one of the least alert people on the sidewalk. (A) Hospitals have reported a steady rise in injuries linked to distracted walking, ranging from minor scrapes after tripping over a curb to serious collisions with moving vehicles at intersections. (B) Researchers who study attention describe this as a kind of tunnel vision: a person absorbed in a text message or a video processes only a narrow slice of the surrounding environment. (C) What makes this danger especially difficult to address is that pedestrians rarely recognize the risk in the moment; unlike distracted driving, which is widely condemned, glancing at a phone while crossing the street still feels like a harmless habit.

For many years, comic books and graphic novels were seen as a lazy alternative to real reading. (A) Recent research, however, tells a more complicated story, since graphic novels actually require readers to combine written text with visual clues. (B) Parents and teachers often worried that pictures did the work that words should do, leaving young readers with weaker vocabulary and imagination. (C) Rather than replacing traditional reading, graphic novels appear to work best as a bridge that leads students toward it.

A weekend camping trip promises fresh air and a break from screens, but the same wilderness that makes camping appealing also removes many of the safety nets people rely on without noticing, such as nearby hospitals or cell phone signal. (A) Experienced campers also stress the importance of checking a weather forecast before leaving, since a clear evening sky offers no guarantee against a sudden storm later that night. (B) One of the most overlooked risks is setting up a tent too close to a campfire, since a sudden gust of wind can carry a spark onto dry fabric faster than anyone expects. (C) Food storage is another area where casual habits create danger: leaving snacks inside a tent, rather than in a sealed container away from the sleeping area, can attract wildlife looking for food.

Such shortcuts might seem harmless when nothing goes wrong the first few times. Science labs feel far safer than they actually are, largely because the equipment looks harmless and the experiments are carefully planned by a teacher. ( ① ) This false sense of security leads some students to skip small precautions, such as wearing safety goggles for a "simple" experiment or tasting a substance out of curiosity. ( ② ) Chemical reactions, however, do not distinguish between a professional laboratory and a classroom; a small amount of the wrong substance splashed into an eye can cause permanent damage within seconds, regardless of how basic the experiment seemed. ( ③ ) Teachers repeatedly emphasize reading each instruction before touching any material, since even a familiar-looking chemical can behave unpredictably when combined with something new. ( ④ ) Most laboratory accidents, researchers note, do not happen during advanced or unusual experiments but during routine ones that students have performed many times before. ( ⑤ ) This is precisely because familiarity breeds carelessness rather than caution.

The reason, they explain, is simple: a first reading leaves little room for anything beyond the plot. Many readers assume that once they finish a book, there is no reason to open it again. ( ① ) Yet teachers who study reading often disagree, arguing that a second reading can reveal details a first reading misses completely. ( ② ) During a first reading, most of a student's attention goes toward simply following the plot, wondering what will happen next. ( ③ ) Once the ending is already known, a second reading frees the mind to notice smaller things, such as a clever hint the author placed early in the story or a change in a character's tone. ( ④ ) Some students who reread their favorite novel report that it feels almost like reading a different book, because they now understand the characters' motives more deeply. ( ⑤ ) Teachers therefore encourage students not to rush toward new titles alone, but to occasionally return to a book they already loved, since a second visit often teaches more than the first.