영어 모의고사 (자동 편성)

Even a modest level of dehydration, as little as two percent of body weight ①lost through sweat, can measurably reduce an athlete's endurance and cognitive sharpness during competition. As fluid levels drop, blood volume decreases, ②forcing the heart to work harder to deliver the same amount of oxygen to working muscles, which accelerates fatigue. Dehydration also impairs the body's ability ③to regulate its own temperature, since sweating is the primary mechanism for releasing excess heat during intense exercise. Athletes competing in hot, humid conditions face a particularly difficult balance, because sweating heavily to stay cool simultaneously ④depletes the very fluids needed to sustain performance. For this reason, sports scientists generally recommend a hydration strategy ⑤tailoring to an individual athlete's sweat rate and the specific conditions of the event.

When people are ①asked to judge how risky or beneficial a particular technology is, they rarely conduct anything ②resembling a careful cost-benefit analysis. Instead, they consult a quick emotional impression, an instinctive sense of whether the technology feels good or feels bad, and let that impression guide their entire judgment. This mental shortcut, ③known as the affect heuristic, produces a curious pattern that traditional risk theory struggles to explain: activities people like tend to be judged as both safer and more beneficial, while activities they dislike are judged as both riskier and less beneficial, even when no logical relationship between risk and benefit exists. For example, when researchers ④presented a fictional industrial chemical alongside a brief description emphasizing its convenience, participants rated it not only as more useful but also, illogically, as less dangerous. Because emotional impressions form so rapidly and feel so trustworthy, correcting for this heuristic requires deliberate effort; simply presenting more accurate statistics to already anxious or enthusiastic audiences rarely ⑤change their underlying judgment.

A printer that once produced only plastic prototypes can now ①deposit living cells layer by layer to build a structure that begins to resemble actual tissue. Bioprinting adapts the logic of conventional 3D printing, ②replacing plastic filament with a specialized ink made of living cells suspended in a gel that supports their survival while the shape sets. Printing a flat patch of skin or a simple blood vessel has already moved from laboratory curiosity to early clinical testing, since these tissues ③is thin enough for nutrients to reach every cell by diffusion. Printing a solid organ such as a kidney remains a far greater challenge, because internal cells starve without their own blood supply, and no printer yet exists that can build a network of vessels fast enough ④to keep them alive. Researchers are therefore focusing on hybrid strategies, printing a rough scaffold and then ⑤allowing the tissue to mature and grow its own vasculature over time.

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

In a classic experiment inspired by Keynes's beauty contest analogy, participants choose a number between zero and one hundred, and the winner is whoever selects the number closest to two-thirds of the average of all guesses submitted. A perfectly rational player, assuming every other participant reasons with unlimited depth, would conclude the equilibrium number is zero. In practice, however, actual guesses rarely converge on zero; most participants stop reasoning after a round or two of imagining what others might guess, producing _______________. This gap between theoretical equilibrium and observed behavior reveals that human reasoning is bounded.

During exam season last year, our school counselor introduced a weekly drop-in session where students could paint freely for thirty minutes without any instructions or grading. (A) I attended mostly out of curiosity, expecting a relaxing but ultimately pointless activity, since I have never considered myself artistically talented. (B) To my surprise, filling a blank page with color, without worrying whether the result looked good, left me noticeably calmer than scrolling through my phone during the same amount of free time. (C) The counselor explained that art therapy does not aim to produce impressive paintings; it simply gives people a way to express feelings that are difficult to put into words.

This wasted electricity, though invisible, still comes from real power plants that burn fuel. Turning off lights when you leave a room seems like a tiny action, but it saves more energy than most people expect. ① Every light left on in an empty room wastes electricity that could have powered something useful elsewhere. ② For example, a single classroom light left on overnight can waste enough energy to charge dozens of phones. This habit is similar to leaving a faucet running while you brush your teeth, where water flows out for no reason. ③ Both actions seem harmless in the moment, but they add up to a serious waste over time. Some students argue that a single light does not make much difference. ④ However, when an entire school forms this habit together, the total amount of saved energy becomes significant. ⑤ Therefore, this small daily habit can create a surprisingly large positive effect for the whole planet.

주어진 문장: Her plan, however sincere at the time, quietly dissolves the moment a more immediate temptation appears. Consider a student who genuinely intends to study for tomorrow's exam yet, when the evening actually arrives, chooses to watch another episode of a favorite show instead, promising herself she will surely study harder next week. ( ① ) This pattern, in which the pull of an immediate pleasure overwhelms the value of a distant benefit, appears again and again across ordinary life, from postponed exercise to delayed savings. ( ② ) People do not necessarily fail to understand that the future reward matters more; rather, whatever happens right now simply feels disproportionately more urgent and vivid than anything scheduled for later. ( ③ ) Behavioral economists note that this preference weakens considerably once both options are pushed into the future, which is why planning a diet starting next month feels effortless compared with skipping dessert tonight. ( ④ ) Such inconsistency helps explain why gym memberships go unused and retirement accounts remain underfunded, despite people's stated intentions. ( ⑤ ) Recognizing this pull toward the present, therefore, allows individuals and institutions to design commitments that quietly protect long-term goals from short-term temptation.

주어진 문장: This durability is especially evident in modern debates about whether people can truly perform two demanding tasks at once. Long before cognitive scientists possessed the tools to observe the brain directly, Donald Broadbent proposed an influential model suggesting that the human capacity to process incoming sensory information is constrained by a structural bottleneck through which only a single stream of input can pass at any given instant. ( ① ) According to this filter theory, multiple channels of stimulation, such as competing voices in a crowded room, are initially registered at a shallow, physical level, but only one channel is selected for further, meaning-based analysis while the rest are blocked from advancing beyond that early filter. ( ② ) Although later researchers challenged the rigidity of this early selection mechanism, pointing to instances in which unattended information, such as one's own name, nevertheless breaks through and captures awareness, ( ③ ) the core insight that attention imposes a genuine processing limit rather than a mere matter of willpower has remained remarkably durable. ( ④ ) This basic bottleneck principle continues to inform contemporary explanations of why multitasking so reliably degrades performance on demanding tasks. ( ⑤ )

Yet the number displayed each morning is only as good as the estimate behind it. Wearable devices that track sleep have become enormously popular, promising a detailed breakdown of light, deep, and REM sleep each night. ( ① ) These gadgets typically rely on movement sensors and heart rate monitors to estimate sleep stages, since directly measuring brain activity would require equipment found only in a sleep laboratory. ( ② ) This indirect approach, however, introduces significant uncertainty. ( ③ ) Independent studies comparing 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. ( ④ ) Some trackers overestimate deep sleep, while others underestimate the amount of time spent in REM sleep, and the margin of error can vary widely between brands. ( ⑤ ) Despite these limitations, many users have come to 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.