영어 모의고사 (자동 편성)

Desalination, the process of removing dissolved salts from seawater to produce fresh water, has increasingly been adopted by coastal regions facing chronic water ①scarcity. Most modern facilities rely on reverse osmosis, a technique in which seawater is forced through membranes whose microscopic pores block salt while letting water molecules pass. Because this method ②consumes 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 ③concentrated byproduct called brine, which, when discharged without adequate dilution, can raise local salinity to levels that harm marine life. Pumping seawater through membranes at high pressure also demands substantial electricity, so plants powered by fossil fuels can ④alleviate the emissions that intensify drought. Therefore, engineers increasingly argue that desalination should be treated not as a stand-alone remedy but as one component of a ⑤broader conservation strategy.

German sociologist Georg Simmel argued that the psychological experience of city life differs fundamentally from life in small towns, primarily because urban residents are bombarded with a much greater volume of stimuli than the human nervous system evolved to process. (B) This detachment, while sometimes criticized as cold or impersonal, also grants urban residents a distinctive freedom, since so few people know or judge them personally. (A) To cope with this constant sensory overload, Simmel proposed, city dwellers develop what he called a blasé attitude, treating most encounters with calculated detachment rather than genuine engagement. (C) Simmel therefore viewed anonymity as a double-edged feature of modern life, one that isolates individuals from deep communal bonds while liberating them from constant surveillance.

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. (A) 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, weakening the quality of materials produced afterward. (B) 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. (C) Manufacturers derive these materials from renewable resources such as corn starch, blending them with additives that accelerate microbial breakdown once discarded. However, their environmental benefits are often exaggerated, largely because decomposition depends on specific conditions rarely found outside industrial composting facilities.

Conventional industrial zones typically operate as isolated facilities, each purchasing raw materials independently and disposing of waste without regard for neighboring plants, even when one factory's discarded byproduct could serve as valuable input for another. (A) An eco-industrial park reorganizes this arrangement by clustering diverse companies within a single area and encouraging them to exchange materials, energy, and water through a practice known as industrial symbiosis. A power plant's surplus heat, for example, might be piped to a nearby greenhouse, while a food processing facility's organic waste could be converted into biogas that powers another factory's equipment. (B) Such exchanges require companies to coordinate schedules and share information they might otherwise regard as proprietary, a level of cooperation rarely achieved without deliberate institutional support. Local governments therefore often play a coordinating role, mapping which industries could exchange resources and providing incentives for companies willing to participate. (C) Consequently, eco-industrial parks have come to be seen as a model capable of reducing both waste disposal costs and raw material expenses simultaneously.

Extended producer responsibility, a policy requiring manufacturers to bear responsibility for their products even after use, has been adopted by governments seeking to reduce landfill waste. (A) Critics counter that the policy, whatever its theoretical merits, often fails to reduce waste meaningfully unless paired with rigorous enforcement and transparent reporting requirements. For instance, some manufacturers merely pass the added cost of compliance on to consumers, without making substantive changes to how products are designed. (B) Under such schemes, companies must finance the collection and recycling of goods once consumers discard them, rather than leaving municipalities to absorb the cost. Advocates maintain that shifting this burden onto producers creates a powerful incentive to design products that are more durable, easily disassembled, and readily recyclable from the outset. (C) In contrast, jurisdictions that combine producer responsibility with strict eco-design standards and independent audits tend to witness genuine improvements in recyclability. Therefore, policymakers hoping to harness this approach must resist treating it as self-executing and instead invest in oversight that determines whether producers actually change behavior.

Among the many strategies proposed to remove carbon dioxide from the atmosphere, one of the oldest draws on an agricultural technique predating modern industry, converting organic material into a stable form of charcoal known as biochar. (A) When mixed into farmland, biochar also improves soil structure, retaining moisture and nutrients otherwise lost, which can boost crop yields in depleted soils. For example, farmers cultivating nutrient-poor tropical soils have reported measurable increases in productivity after adding biochar. (B) Biochar is produced through pyrolysis, a process in which crop residues or wood chips are heated in an environment with little or no oxygen, preventing the material from burning away as in an open fire. This process leaves behind a carbon-rich solid that resists decomposition far longer than raw organic matter, locking carbon in a form remaining stable in soil for centuries. (C) Nevertheless, researchers caution that the climate benefits of biochar depend on the feedstock and method used, since poorly managed pyrolysis can release as much carbon as it sequesters, undermining its own purpose.

Every one of those clones, remarkably, is a perfect genetic copy of the original. The immune system produces an almost limitless variety of antibodies, each shaped to latch onto one particular molecular target with remarkable specificity. ( ① ) Monoclonal antibody drugs harness this natural precision by cloning a single antibody-producing cell in the laboratory. ( ② ) The result is an army of identical antibodies built to recognize one target, such as a protein on a cancer cell or a molecule driving an autoimmune disease. ( ③ ) Because the antibody binds only to its intended target, these drugs tend to spare healthy tissue far more effectively than traditional chemotherapy, which attacks any rapidly dividing cell regardless of whether it is cancerous. ( ④ ) Manufacturing monoclonal antibodies remains far more complicated than producing a conventional small-molecule pill, since living cells must be cultivated in carefully controlled bioreactors for weeks before the antibody can be purified and prepared for use. ( ⑤ ) This complexity keeps monoclonal antibody treatments considerably more expensive than most conventional drugs, a cost that continues to shape debates over pricing and access.

주어진 문장: This buying and selling of allowances effectively creates a market price for carbon, one that fluctuates according to how difficult reduction proves across different industries. 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. ① Under this system, known as cap-and-trade, companies that cut emissions more cheaply than required can sell surplus allowances to firms facing higher reduction costs. ② Proponents argue that this flexibility lets society reach a given environmental target at the lowest overall cost, since abatement shifts toward whoever can achieve it most economically. ③ Critics, however, contend that trading schemes frequently allocate too many permits, a flaw that has historically depressed carbon prices and blunted incentives to invest in cleaner technology. ④ For example, early phases of several regional markets granted allowances so generously that permit prices collapsed, leaving polluters with little pressure to change their practices. ⑤ 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 preserving the cost-effectiveness for which trading is valued. ① ② ③ ④ ⑤

주어진 문장: Although constructing a passive house initially costs more than building a conventional home, the savings accumulated over decades of reduced energy bills often outweigh this upfront investment. As buildings account for a substantial share of global energy consumption, architects have increasingly turned to a design philosophy known as the passive house standard, which minimizes energy demand through the building's own structure rather than through mechanical systems. ① Central to this approach is airtight construction, in which continuous insulation and sealed joints prevent conditioned air from leaking outward, thereby reducing the heating and cooling loads conventional buildings require. ② Triple-glazed windows, oriented to capture sunlight in winter while shading interiors in summer, further stabilize indoor temperatures without relying heavily on furnaces or air conditioners. ③ Ventilation systems equipped with heat exchangers also recover warmth from outgoing air, transferring it to incoming air so that comfort is maintained without excessive energy use. ④ For example, some passive houses built in cold climates have reduced heating costs by more than ninety percent. ⑤ Consequently, many architects regard passive house design not as a luxury for wealthy homeowners but as a practical model capable of reshaping mainstream construction. ① ② ③ ④ ⑤

That freedom, however, comes with an important caveat about what these structures can and cannot tell us. A cluster of neurons smaller than a pea can now spontaneously organize itself into layered structures that mimic, in miniature, the architecture of a developing human brain. ( ① ) Grown from stem cells coaxed to follow the same developmental cues that guide an embryo, these brain organoids have begun firing electrical signals in patterns that faintly resemble the activity recorded in an infant's brain. ( ② ) For researchers studying disorders such as autism or schizophrenia, this offers something long unavailable: a living model of human brain development that can be observed and manipulated directly. ( ③ ) This can happen without ever touching an actual patient. ( ④ ) Because organoids lack sensory organs, a body, or any connection to the outside world, most neuroscientists argue that the structures cannot generate anything resembling subjective experience, however brain-like their electrical activity may appear. ( ⑤ ) Even so, the pace at which these organoids are growing more complex has convinced some ethicists that the field would benefit from establishing clear boundaries now, before the science outruns the conversation about what it means.