영어 모의고사 (자동 편성)

Biodegradable plastics have been promoted as a promising solution to plastic waste, since they ①are designed to decompose into natural substances rather than persist for centuries. Manufacturers derive these materials from renewable resources such as corn starch, blending them with additives that ②accelerates microbial breakdown once discarded. However, their environmental benefits are often exaggerated, largely because decomposition depends on specific conditions rarely ③found outside industrial composting facilities. 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. In addition, when mixed with conventional plastics in recycling streams, they can contaminate the process, ④weakening the quality of materials produced afterward. 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 ⑤providing the precise conditions decomposition demands.

Two drivers, equally distracted by their phones, ①run a red light in exactly the same careless manner. By pure chance, a child happens to be crossing the street in front of one driver but not the other; the first driver kills the child, while the second driver drives through safely and never even ②noticing the danger. Although both drivers behaved identically and made exactly the same reckless choice, society judges them very differently: one faces criminal charges and lifelong guilt, while the other receives, at most, a minor traffic ticket. Philosophers call this troubling asymmetry moral luck, since factors entirely outside a person's control end up ③determining how severely we judge their moral character. If moral responsibility is supposed to depend only on what a person chooses and intends, this outcome seems deeply unfair, yet few people are willing ④to excuse the unlucky driver as if nothing worse had happened. Moral luck suggests that our everyday judgments rest on a foundation far ⑤shakier than we usually like to admit.

Working memory refers to the mental workspace in which information is ①temporarily held and manipulated while a person performs a cognitive task. Such tasks include solving an arithmetic problem, following a rapid conversation, or holding a phone number in mind before dialing it. In the mid-twentieth century, the psychologist George Miller proposed that this workspace could accommodate roughly seven discrete items. His claim proved so ②influential that it became widely known as the magic number seven. Subsequent research, however, revealed that Miller's estimate was somewhat ③conservative, since it failed to account for the complexity of the material being remembered. Nelson Cowan later argued that when rehearsal strategies are ④prevented and attention is tightly controlled, genuine capacity hovers closer to four items rather than seven. This discrepancy suggests that what earlier studies had measured was not raw storage capacity itself but a hybrid quantity ⑤inflated by clever strategies. Contemporary psychologists therefore distinguish between the fixed limit of working memory and the flexible techniques that allow individuals to transcend that limit.

A plastic bag that fully decomposes within months rather than lingering for centuries sounds almost too convenient to be real, yet certain bioplastics on the market ①rarely do that under the right conditions. Unlike conventional plastic, derived almost entirely from petroleum, many bioplastics are synthesized from renewable feedstocks such as corn starch or sugarcane, sometimes with the help of bacteria engineered to produce plastic-like polymers as a ②byproduct of their metabolism. Not every bioplastic biodegrades quickly, however, and some marketed as eco-friendly break down only in industrial composting facilities that reach conditions ③rarely found in a backyard compost heap or the open ocean. Critics point out that growing crops for bioplastic production can compete with food crops for farmland and water, complicating the assumption that a biological origin automatically makes a material more ④sustainable. Researchers are now exploring bioplastics made from agricultural waste and algae instead of dedicated crops, hoping to sidestep this competition for land while preserving the ⑤benefits that first made bioplastics appealing.

When sociologist Émile Durkheim studied suicide rates across different societies, he noticed something ①puzzling: rates rose not only during economic depression but also during sudden prosperity. He concluded that both crises share a common feature, the ②collapse of shared norms that once told individuals what to expect and how to behave. Durkheim called this state of normlessness anomie, arguing that rapid social change can ③strengthen the moral guidelines that regulate human desire, leaving individuals disoriented even when material conditions improve. Decades later, Robert Merton extended the concept to explain deviance within stable societies, proposing that anomie also arises when a culture insists that everyone pursue ④identical goals, such as wealth, while denying many people the legitimate means to achieve them. Anomie theory therefore suggests that crime is less a product of individual failure than of ⑤structural imbalance within society itself.

Every time an antibiotic kills off a population of bacteria, a handful of cells carrying a random mutation that resists the drug are left behind to ①multiply without competition. Repeated over decades, across hospitals, farms, and households worldwide, this simple process of natural selection has produced strains of bacteria that survive treatments once considered reliably ②effective. The pharmaceutical industry, meanwhile, has slowed the pace at which new antibiotics reach the market, since a drug meant to be taken for only a week or two rarely earns back the ③enormous cost of developing it. Researchers are therefore searching in ④unconventional places, screening soil microbes, ocean sediment, and even genetic databases for molecules that kill bacteria through mechanisms resistant strains have not yet learned to evade. Some scientists have also revived an older approach, using viruses that infect only bacteria to hunt down resistant strains with a ⑤carelessness no broad-spectrum drug could ever match.

Long before calculus existed, the Greek philosopher Zeno constructed a series of paradoxes designed to show that motion itself might be logically ①impossible. In one version, a swift runner named Achilles races a slow-moving tortoise that is given a modest head start. Common sense insists that Achilles will quickly ②overtake the tortoise, yet Zeno's argument suggests otherwise. By the time Achilles reaches the tortoise's starting point, the tortoise has crawled a little further ahead, and this process repeats endlessly, generating an infinite number of ③smaller and smaller gaps that Achilles must apparently cross one after another. Zeno concluded that Achilles could never actually catch the tortoise, a conclusion that plainly ④contradicts everyday experience. Modern mathematics eventually resolved the paradox by showing that an infinite series of shrinking distances can still sum to a finite total, ⑤preventing motion from ever being completed in a finite amount of time.

Long before humans learned to drill for oil, microorganisms had already mastered 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 refined into fuel usable in existing engines. _______________. 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 difficult, since harvesting and processing the organisms consumes a substantial share of the energy the fuel itself will eventually provide.

주어진 문장: This effect has been demonstrated so consistently across age groups and subject areas that few findings in cognitive psychology are considered more reliable. Dual coding theory, first proposed to explain why certain kinds of information are remembered more readily than others, holds that the mind processes verbal and visual material through two partially independent channels rather than a single unified system. ( ① ) According to this account, words and other linguistic symbols are encoded primarily through a verbal channel that represents meaning in an abstract, sequential form, while pictures and concrete objects are encoded through an imagery channel that preserves spatial and perceptual detail. ( ② ) When information engages both channels simultaneously, as when a textbook pairs a written explanation with an accompanying diagram, the resulting memory trace benefits from two separate, mutually reinforcing pathways of retrieval rather than just one. ( ③ ) This redundancy explains the well-documented picture superiority effect, whereby concrete, easily visualized words tend to be recalled more accurately than abstract terms that resist mental imagery. ( ④ ) Consequently, dual coding theory has profound implications for instructional design, suggesting that combining carefully chosen visuals with concise verbal explanations can strengthen students' long-term retention of complex material. ( ⑤ )

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.