영어 모의고사 (자동 편성)

Cities are frequently several degrees warmer than the surrounding countryside, a phenomenon ①known as the urban heat island effect, which intensifies in summer and threatens public health. This disparity arises largely because asphalt and concrete absorb solar radiation during the day and slowly release it as heat throughout the night, ②preventing urban areas from cooling down. To address this problem, urban planners have begun implementing mitigation strategies ③designed to lower surface and air temperatures. One widely used solution involves reflective "cool" roofing ④engineered to reflect more sunlight than dark rooftops absorb. Another strategy, green infrastructure, incorporates rooftop gardens and tree-lined streets that ⑤provides shade while releasing moisture.

For decades, most vaccines worked by ①injecting a weakened or inactivated version of a pathogen, coaxing the immune system into recognizing an enemy it had never truly fought. mRNA vaccines take a fundamentally different route, ②delivering only a short genetic instruction wrapped in a protective lipid capsule, one that tells the body's own cells how to manufacture a single harmless piece of a virus's outer surface protein. Once those cells display the fragment, the immune system learns to recognize it as foreign and ③builds a defense, without ever having encountered the actual pathogen. Because the vaccine contains no live virus and cannot alter a cell's own DNA, developers can redesign the genetic instructions within weeks whenever a pathogen ④mutating, rather than starting the years-long process required for traditional vaccines. This speed, first proven on a global scale during a recent pandemic, has convinced many researchers that the same platform could eventually ⑤be adapted to fight diseases far beyond infectious illness, including certain cancers.

Philosopher Robert Nozick asked his readers to imagine a machine capable of producing any experience they ①desired, from writing a great novel to falling in love, all indistinguishable from reality once they were plugged in. Neuroscientists would simply stimulate the brain to generate a lifetime of perfectly satisfying experiences, and the person floating in the tank would have no memory of ever choosing to enter it. If pleasure and the avoidance of pain were truly all that mattered, as classical hedonism claims, then everyone should ②rush to connect themselves permanently to such a machine. Yet when people actually consider the offer, most ③eagerly accept, and many refuse outright. Nozick took this reluctance as evidence that human beings care about more than the quality of their internal sensations; people also want to actually ④do certain things, to actually be a certain kind of person, and to maintain genuine ⑤contact with a reality beyond their own mind.

Long before humans learned to drill for oil, microorganisms had already ①mastered the art of converting sunlight and carbon dioxide into stored chemical energy. Modern biofuel research borrows this ability, cultivating algae or engineered bacteria in large tanks where they can be coaxed into producing oils and sugars that can be ②refined into fuel usable in existing engines. Unlike crops grown for corn-based ethanol, which ③compete directly with food production for arable land, many algae strains can thrive in shallow ponds, wastewater, or even coastal seawater unsuitable for conventional agriculture. Engineers have also learned to tinker with the metabolic pathways of these organisms, boosting oil yield far beyond what any wild strain would naturally produce on its own. Despite this progress, producing biofuel at a cost competitive with fossil fuel remains ④difficult, since harvesting and processing the organisms ⑤conserves a substantial share of the energy the fuel itself will eventually provide.

Scientists have long searched for a way to describe, in a single coherent framework, the outer limits within which human activity can safely continue without ①stabilizing the planet's fundamental systems. The concept of planetary boundaries, introduced by earth-system researchers, identifies nine interconnected processes, including climate change, biodiversity loss, and nitrogen pollution, each possessing a threshold beyond which abrupt and ②irreversible change becomes likely. Unlike conventional environmental limits, often defined locally, these boundaries are framed at a planetary scale, reflecting the idea that the Earth functions as a single ③interdependent system rather than a collection of isolated regions. Crossing one boundary, proponents argue, does not merely damage the system involved but can also ④destabilize 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 are drawn with more ⑤confidence than the data can support.

Students are frequently told that where they study makes little difference, provided that they put in enough hours. Cognitive research on memory retrieval, however, suggests that this advice oversimplifies an important process. According to the encoding specificity principle, information becomes intertwined with the context in which it was originally learned. Cues present during encoding therefore facilitate retrieval far more effectively than cues encountered elsewhere. A striking demonstration involved divers who memorized word lists either underwater or on dry land. When tested later, _______________. This held true regardless of which environment that happened to be. This finding implies that reviewing material exclusively in a quiet bedroom may not adequately prepare a student for the noisy atmosphere of an actual examination hall. Rather than assuming that memorization is a context-free process, students ought to consider deliberately varying study locations and conditions. Doing so would ensure that retrieval cues remain available regardless of how a future test is administered.

Medieval philosophers told the story of a hungry donkey placed exactly midway between two identical, equally fragrant piles of hay, with no factor whatsoever tipping the balance toward either option. Because the donkey is assumed to be a perfectly rational creature that always chooses the option supported by the strongest reason, and because neither pile offers any advantage over the other, the donkey supposedly finds itself with no rational basis for choosing one pile rather than the other. Paralyzed by this perfect symmetry, the donkey starves to death precisely because it can find no reason to move in either direction. Critics of the story point out that _______________.

Rewilding, a conservation strategy that seeks to restore natural processes with minimal human interference, has gained attention as traditional conservation struggles to halt biodiversity loss. Rather than managing landscapes according to a fixed blueprint, rewilding projects often reintroduce key species, such as large predators, whose presence can trigger cascading effects. Advocates point to the reintroduction of wolves in certain parks, where predation altered grazing behavior, allowing riverside vegetation to recover and stabilizing soil that had long been eroding. Skeptics, however, warn that rewilding can provoke serious conflict with nearby communities, particularly when predators prey on livestock or restored habitats limit land for agriculture. Moreover, critics argue that restoring landscapes to an imagined pristine state is scientifically dubious, since ecosystems have long been shaped by human activity. Compensation programs reimbursing farmers for livestock losses, alongside ecotourism initiatives creating local income, have proven essential to sustaining public support. Ultimately, _______________.

As solar and wind power expand rapidly across national grids, engineers face a challenge that receives far less public attention than the construction of the generating facilities themselves. (A) One proposed solution involves large-scale battery storage systems, which absorb surplus electricity generated during periods of high output and release it later when generation declines. Another approach relies on expanding transmission networks across wider regions, so that electricity generated in a sunny area can be redirected to places experiencing a shortfall. (B) 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, producing supply that fluctuates constantly. This intermittency means that grid operators must balance supply and demand even when renewable output suddenly drops, such as when clouds cover a solar farm or wind speeds fall. (C) Grid operators must therefore invest in infrastructure capable of accommodating 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 expected to provide.

주어진 문장: Traditional economic models, in fact, offer no straightforward account of why unpaid, amateur labor should raise an object's perceived worth in the eyes of its very creator. Why do people often overvalue objects they have partly built themselves, even when the finished product is objectively inferior to something they could have simply purchased? ( ① ) This puzzle, which researchers named after a furniture retailer famous for selling items that require home assembly, challenges the standard economic assumption that value is determined solely by an object's inherent qualities. ( ② ) In a series of experiments, participants who assembled a plain storage box were willing to pay nearly as much for their own imperfect creation as they were for a professionally built version, despite being fully aware of its flaws. ( ③ ) Labor, it seems, functions as a kind of psychological investment: once effort has been poured into a task, individuals become reluctant to judge the outcome objectively, because doing so would require admitting that their effort was partly wasted. ( ④ ) This tendency helps explain why consumers often prefer products that demand some degree of personal assembly, even when a comparable finished item is available at a lower price and requires no time investment whatsoever. ( ⑤ )