영어 모의고사 (자동 편성)

Desalination, the process of ①removing dissolved salts from seawater to produce fresh water, has increasingly been adopted by coastal regions facing chronic water scarcity. Most modern facilities rely on reverse osmosis, a technique in which seawater is ②forced through membranes whose microscopic pores block salt while letting water molecules pass. Because this method consumes far less energy than the thermal distillation once dominant in the industry, it has become the preferred choice for large-scale plants. Nevertheless, desalination remains an inherently costly and environmentally burdensome solution, a fact often overlooked amid enthusiasm for ending water shortages. For instance, the process generates a concentrated byproduct called brine, which, when discharged without adequate dilution, can raise local salinity to levels that ③harms marine life. Pumping seawater through membranes at high pressure also ④demands substantial electricity, so plants powered by fossil fuels can worsen the emissions that intensify drought. Therefore, engineers increasingly argue that desalination should be ⑤treated not as a stand-alone remedy but as one component of a broader conservation strategy.

Traditional industrial systems have relied on a linear model of production, in which raw materials ①are extracted, transformed into goods, and eventually discarded as waste. This approach treats natural resources as if unlimited and disposal as if costless. A circular economy proposes an alternative framework in which materials ②is kept in continuous use through reuse, repair, and recycling, thereby reducing the extraction of virgin resources. Central to this model is the notion that waste, rather than ③being an inevitable byproduct, can be redesigned as a resource for another process, much as fallen leaves nourish the trees that shed them. For example, manufacturers design products so that components can be disassembled and ④reused in new items once their original function ends. Some companies also lease equipment instead of selling it outright, ⑤retaining responsibility for refurbishment.

Every Wednesday evening, a small group meets in the corner of a quiet cafe, coffee cups in hand, ready ①to talk about a book they have all just finished. This is a book club, and its members insist that reading the same novel together ②changes the experience completely. Alone, a reader usually forms one interpretation and rarely questions it again. In a group, however, one member's small comment about a minor character can suddenly change how everyone else ③understood the whole story. Members also say that having a discussion planned in advance ④push them to finish books they might otherwise put down halfway through. Perhaps the greatest benefit is social rather than literary: strangers from very different backgrounds discover that they share the same doubts, laughter, and surprises ⑤over the very same pages.

A food allergy can turn an ordinary snack shared between classmates into a medical ①emergency within minutes, which is why schools now take ingredient labels more seriously than they once did. For someone with a severe allergy, even a trace amount of the wrong ingredient, transferred by a shared spoon or an unwashed hand, can trigger a reaction that closes the airway and becomes ②life-threatening if untreated. 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 ③larger than a crumb. Recognizing the early signs, such as swelling around the lips, hives, or sudden difficulty breathing, allows classmates and teachers to act before the reaction becomes ④severe. Many schools now train staff to use an epinephrine auto-injector, a device that can ⑤reverse a dangerous reaction within seconds.

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.

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. 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. 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. Grid operators _______________. Without such investment, integrating renewable energy could paradoxically undermine the very reliability that modern electricity grids are expected to provide.

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 _______________. 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. 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, the core insight that attention imposes a genuine processing limit rather than a mere matter of willpower has remained remarkably durable. This basic bottleneck principle continues to inform contemporary explanations of why multitasking so reliably degrades performance on demanding tasks.

Before a large-scale construction project such as a highway or dam receives government approval, planners in many countries are required to conduct an environmental impact assessment, a formal process designed to predict and evaluate the ecological consequences of a proposed development. (A) For instance, a proposed highway that would bisect a forest might be evaluated for its potential to fragment habitats, disrupting migration routes on which certain species depend. If the assessment identifies unacceptable risks, planners may be required to redesign the project or adopt mitigation measures such as wildlife corridors. (B) Critics contend, however, that assessments are sometimes treated as a bureaucratic formality rather than a genuine constraint, since developers who commission the studies retain strong influence over how the findings are interpreted. (C) This process begins with a baseline survey, in which specialists document existing conditions, including wildlife, water quality, and air composition, so that future changes can be measured against a reference point. Analysts then model how the project might alter these conditions, drawing on data from comparable developments.

The cell then acts as a temporary factory, translating that instruction into an actual protein without ever altering the cell's permanent genetic code. For decades, most vaccines worked by injecting a weakened or inactivated version of a pathogen, coaxing the immune system into recognizing an enemy it had never truly fought. ( ① ) mRNA vaccines take a fundamentally different route, delivering 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. ( ② ) Once those cells display the fragment, the immune system learns to recognize it as foreign and builds a defense, without ever having encountered the actual pathogen. ( ③ ) 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 mutates. ( ④ ) This is far shorter than the years-long process required for traditional vaccines. ( ⑤ ) This speed, first proven on a global scale during a recent pandemic, has convinced many researchers that the same platform could eventually be adapted to fight diseases far beyond infectious illness, including certain cancers.

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