영어 모의고사 (자동 편성)

Scientists have long searched for a way to describe, in a single coherent framework, the outer limits within ①which human activity can safely continue without destabilizing the planet's fundamental systems. The concept of planetary boundaries, ②introduced by earth-system researchers, identifies nine interconnected processes, including climate change, biodiversity loss, and nitrogen pollution, each ③possessing a threshold beyond which abrupt and irreversible change becomes likely. Unlike conventional environmental limits, often defined locally, these boundaries are framed at a planetary scale, ④reflecting the idea that the Earth functions as a single interdependent system rather than a collection of isolated regions. Crossing one boundary, proponents argue, does not merely damage the system involved but can also destabilize others, since climate, oceans, and land are bound together by feedback loops that transmit disturbance across the system. Some philosophers have likened this framework to a ship's safe operating margin, within which passengers may move freely without risking the vessel's stability. Critics, however, contend that the boundaries ⑤is drawn with more confidence than the data can support.

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.

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.

Eyewitness testimony has long carried weight in courtrooms, yet decades of research reveal that memories of witnessed events are more ①malleable than most people assume. When individuals who observe an event are later exposed to ②misleading information about what they saw, whether through a leading question or a conversation with another witness, their recollections frequently incorporate details that never occurred, a phenomenon known as the misinformation effect. In one classic paradigm, participants who watched a video of a traffic accident and were then asked how fast the cars were going when they smashed into each other reported ③higher speed estimates and were more likely to falsely recall broken glass than participants asked the identical question using the milder verb hit. Crucially, these distorted memories often feel ④genuine to the person experiencing them, since the original memory trace becomes blended with the newly introduced information rather than existing as a separate, contradictory record. Such findings have prompted legal systems to adopt ⑤careless interviewing protocols designed to minimize suggestive questioning during investigations.

Last summer, our neighborhood association invited students to help paint a mural on the long wall beside the community center, and nearly forty volunteers with completely different painting abilities showed up on the first day. (A) When the plastic sheets finally came down, the mural looked remarkably unified, not despite the many different hands involved, but because each hand had been given a task suited to what it could do well. (B) The project leader solved this by dividing the huge design into small, connected sections and assigning each volunteer a section matched to their comfort level, from simple solid-color backgrounds to detailed flowers. (C) I worried that combining so many different skill levels would create an ugly, mismatched result, since some volunteers had painted for years while others, including me, had never held a large brush before.

Cognitive load theory begins from the premise that working memory, the mental workspace in which incoming information is temporarily held and manipulated, can accommodate only a limited number of novel elements at any given moment, in stark contrast to the comparatively vast capacity of long-term memory. (A) Because much of this burden arises not from the intrinsic difficulty of the subject matter itself but from the manner in which information is presented, instructional designers can substantially reduce unnecessary strain by eliminating redundant explanations, aligning visual and verbal elements so that learners need not mentally integrate scattered sources, and gradually withdrawing guidance as competence develops. (B) When instructional materials introduce more interacting elements than this narrow workspace can simultaneously process, learners experience what theorists call cognitive overload, a condition under which comprehension deteriorates and errors multiply regardless of how motivated the learner might be. (C) Ignoring these principles, by contrast, risks overwhelming novices with demands that exceed their processing capacity, however well-organized the underlying content may be.

As cities have expanded across landscapes once covered with absorbent soil, impervious surfaces have turned stormwater from a resource that recharges groundwater into a hazard that floods streets and carries pollutants into waterways. (A) For example, cities that replaced pavement with permeable alternatives have reported notable 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. (B) 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 rigid drainage pipe. (C) Rain gardens, shallow depressions planted with deep-rooted vegetation, are designed to capture runoff from rooftops, allowing it to filter slowly 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 impenetrable.

In other words, the body keeps a running total rather than resetting each day. Sleep debt refers to the cumulative gap between the amount of sleep a person needs and the amount they actually get. ( ① ) Unlike a financial debt, however, this deficit cannot simply be repaid with a single long weekend of rest. ( ② ) When someone loses two hours of sleep every night for a week, the body does not treat the shortage as fourteen separate small losses; instead, it accumulates the deficit, and the resulting impairment in attention and mood can resemble that of a person who has been awake for an entire night. ( ③ ) Researchers have found that even modest, chronic sleep restriction gradually impairs reaction time and decision-making, often without the affected person noticing the decline. ( ④ ) This is because subjective feelings of tiredness tend to plateau after a few days, even as objective performance keeps deteriorating. ( ⑤ ) Consequently, people frequently underestimate how much sleep debt they are carrying until a demanding task suddenly exposes the accumulated cost.

주어진 문장: Taken together, these shortcomings suggest that biodegradability alone cannot guarantee a meaningful reduction in plastic pollution. Biodegradable plastics have been promoted as a promising solution to plastic waste, since they are designed to decompose into natural substances rather than persist for centuries. ① Manufacturers derive these materials from renewable resources such as corn starch, blending them with additives that accelerate microbial breakdown once discarded. ② However, their environmental benefits are often exaggerated, largely because decomposition depends on specific conditions rarely found outside industrial composting facilities. ③ For example, a bag labeled biodegradable may take years, not the weeks advertised, to break down in a landfill or ocean, where temperature and microbial activity remain low. ④ In addition, when mixed with conventional plastics in recycling streams, they can contaminate the process, weakening the quality of materials produced afterward. ⑤ Some engineers therefore compare biodegradable plastics to a bridge that leads nowhere unless paired with infrastructure that completes the journey. Ultimately, realizing their genuine potential requires not only technological refinement but also facilities capable of providing the precise conditions decomposition demands. ① ② ③ ④ ⑤

주어진 문장: This apparent immunity to forgetting seemed to set flashbulb memories apart from every other category of recollection. When people recall precisely where they were and what they were doing at the moment they learned of some momentous public event, the resulting memory often feels extraordinarily vivid, as though it had been etched into the mind with photographic precision; researchers have termed such recollections flashbulb memories. ( ① ) Proponents of this concept once argued that the emotional intensity and surprise accompanying such events trigger a distinct neural mechanism that preserves details with unusual fidelity, effectively exempting them from the gradual decay that afflicts ordinary memories. ( ② ) Subsequent longitudinal studies, however, have complicated this picture considerably: when researchers compared accounts gathered within days of an event to accounts gathered years later, they discovered that details had frequently been altered, omitted, or even fabricated, ( ③ ) even though the individuals reporting them expressed unwavering confidence in their accuracy. ( ④ ) This persistent mismatch between subjective certainty and objective consistency implies that flashbulb memories, far from being flawless recordings, are reconstructed narratives shaped by rehearsal, media exposure, and the passage of time. ( ⑤ )