영어 모의고사 (자동 편성)

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.

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 ①clarifies 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 ②facilitate 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, divers recalled substantially more words if the testing environment ③matched the original learning environment. This held true regardless of which environment that happened to be. This finding implies that reviewing material exclusively in a quiet bedroom may not ④adequately 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 ⑤deliberately varying study locations and conditions.

Emissions trading, a market-based mechanism for curbing greenhouse gases, allows governments to set an overall limit on carbon output while letting firms trade permits within that limit. Under this system, known as cap-and-trade, companies that cut emissions more ①cheaply than required can sell surplus allowances to firms facing higher reduction costs. Proponents argue that this flexibility lets society reach a given environmental target at the ②lowest overall cost, since abatement shifts toward whoever can achieve it most economically. Critics, however, contend that trading schemes frequently allocate too many permits, a flaw that has historically ③depressed carbon prices and blunted incentives to invest in cleaner technology. For example, early phases of several regional markets granted allowances so generously that permit prices ④collapsed, leaving polluters with little pressure to change their practices. Consequently, many economists now advocate combining trading with a price floor, a minimum permit price that keeps the market from collapsing during weak demand, thereby ⑤undermining the cost-effectiveness for which trading is valued.

As more schools shift toward digital textbooks and online assignments, a student without reliable internet access at home faces a disadvantage that has little to do with talent or effort. During recent years, this gap became ①impossible to ignore, as families in rural areas or low-income neighborhoods struggled to complete schoolwork that assumed a stable connection and a personal device. Some policymakers initially treated internet access as a ②convenience, comparable to cable television, rather than as infrastructure essential to modern life. That assumption is increasingly being reconsidered, particularly as more essential services move online by default. Closing this divide will require ③far less than simply distributing devices; it will demand ④sustained investment in the physical networks that carry information into every home, ⑤regardless of income or location.

A single fertilized egg eventually gives rise to every cell type in the human body, from neurons to bone, a feat that has fascinated biologists for more than a century. (A) Because harvesting these cells traditionally required destroying a human embryo, the research provoked ethical objections fierce enough to slow funding and legislation in several countries for years. (B) A breakthrough arrived when scientists discovered that ordinary adult skin cells could be reprogrammed into a state resembling embryonic versatility without ever touching an embryo, opening a path for stem cell research that far more scientists and funding agencies are now willing to support. (C) Embryonic stem cells retain much of that original versatility, capable in principle of developing into almost any tissue, which is why researchers have long viewed them as a promising raw material for repairing damaged organs.

Long before humans learned to drill for oil, microorganisms had already mastered the art of converting sunlight and carbon dioxide into stored chemical energy. (A) 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. (B) Unlike crops grown for corn-based ethanol, which compete directly with food production for arable land, many algae strains can thrive in shallow ponds, wastewater, or even coastal seawater unsuitable for conventional agriculture. (C) Engineers have also learned to boost oil yield through genetic tinkering, yet 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.

Retailers have discovered practical ways to counteract the negative effects of choice overload without simply reducing the number of products they offer. (A) One common strategy involves organizing an extensive product catalog into clearly labeled categories and subcategories, allowing customers to narrow their search gradually rather than confronting the entire array at once. (B) Another approach highlights a small number of curated recommendations, such as "staff picks" or "best sellers," giving hesitant customers a reasonable starting point without eliminating other options entirely. (C) Both strategies share a common principle: they do not reduce the objective number of choices available but instead reduce the cognitive burden of navigating them.

When consumers compare two products and assume that the one labeled "eco-friendly" is automatically the more sustainable choice, they often overlook the complexity involved in verifying such a claim. (A) Life cycle assessment, commonly abbreviated as LCA, is a systematic method developed to evaluate the environmental impact of a product across every stage of its existence. This method examines raw material extraction, manufacturing, transportation, use, and disposal, compiling data on energy consumption and emissions generated at each stage. (B) By tracing a product from its origin to its disposal, this approach reveals impacts that might otherwise remain hidden from consumers who see only the finished item on a shelf. For example, an electric vehicle may produce no emissions while being driven, yet the mining of metals for its battery can generate substantial environmental costs elsewhere. (C) Without accounting for these earlier stages, a superficial comparison could mistakenly present the vehicle as entirely emission-free. Therefore, researchers increasingly rely on life cycle assessment to make informed decisions rather than trusting labels alone.

This harms the very community whose rational members, each behaving perfectly rationally as individuals, together caused its collapse. Consider a village green shared freely by every herder in the community, where each individual may graze as many animals as they wish without paying any fee. ( ① ) From the perspective of any single herder, adding one more animal to the shared pasture brings a clear personal benefit, since the extra income belongs entirely to that herder alone. ( ② ) The cost of the additional grazing, however, is spread thinly across every herder who uses the green, so no single individual bears more than a tiny fraction of the damage. Because this calculation favors adding more animals for every rational herder, the shared pasture is gradually overgrazed until it can no longer support any animals at all. ( ③ ) Philosophers use this scenario to illustrate a troubling gap between what benefits an individual in the short term and what preserves a shared resource in the long term. ( ④ ) It is a gap, moreover, that voluntary self-restraint alone rarely closes. ( ⑤ )

주어진 문장: This danger arises because no single participant possesses both the authority and the incentive needed to restrict others' access to the resource. When a resource is shared among many users, none of whom bears the full cost of its depletion, each individual is tempted to extract as much value as possible before others do the same. ① This dynamic, famously labeled the tragedy of the commons, describes how shared pastures and fisheries can be degraded even when every participant privately understands the danger of overuse. ② A single herder who adds one more animal to a communal pasture gains the entire benefit of that addition, whereas the resulting damage to the grass is shared among other herders who depend on the land. ③ Because self-interest offers no incentive to restrain consumption unilaterally, the resource tends to be exhausted long before any user intends such an outcome. ④ For decades, economists assumed that only two remedies existed: strict regulation or the conversion of shared resources into private property. ⑤ Elinor Ostrom challenged this assumption, however, by documenting communities that had sustainably managed fisheries and forests for generations through locally devised rules and mutual monitoring rather than external control. ① ② ③ ④ ⑤