영어 모의고사 (자동 편성)

The immune system produces an almost limitless variety of antibodies, each shaped to latch onto one particular molecular target with remarkable ①specificity. Monoclonal antibody drugs harness this natural precision by cloning a single antibody-producing cell in the laboratory, generating 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. Because the antibody binds only to its intended target, these drugs tend to spare healthy tissue far more ②effectively than traditional chemotherapy, which attacks any rapidly dividing cell regardless of whether it is cancerous. Manufacturing monoclonal antibodies remains far more ③complicated 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. This complexity keeps monoclonal antibody treatments considerably more ④expensive than most conventional drugs, a cost that continues to ⑤resolve debates over pricing and access.

Biodegradable plastics have been promoted as a ①promising solution to plastic waste, since they are 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 ②accelerate microbial breakdown once discarded. However, their environmental benefits are often exaggerated, largely because decomposition depends on specific conditions rarely found 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 ③high. In addition, when mixed with conventional plastics in recycling streams, they can ④contaminate the process, weakening 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 ⑤genuine potential requires not only technological refinement but also facilities capable of providing the precise conditions decomposition demands.

Anyone who has ever promised to finish a project "by Friday," only to still be working on it weeks later, has experienced the planning fallacy firsthand. This term describes the persistent tendency of individuals and organizations to underestimate how long a task will take, how much it will cost, and how many complications will inevitably arise. What makes this bias particularly stubborn is that awareness of past failures rarely leads to more accurate predictions; a construction firm that finished its last three projects late will often insist, with genuine confidence, that this next project will be different. Researchers argue that planners focus almost exclusively on the specific steps of the current task while ignoring the broader statistical record of similar projects that came before. One proposed remedy, known as reference class forecasting, requires planners to deliberately consult outcomes from comparable past projects rather than relying solely on their own optimistic intuition. Until such external correction becomes standard practice, _______________.

Traditional industrial systems have relied on a linear model of production, in which raw materials are 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 _______________, thereby reducing the extraction of virgin resources. Central to this model is the notion that waste, rather than being 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 reused in new items once their original function ends. Some companies also lease equipment instead of selling it outright, retaining responsibility for refurbishment. Because such practices lessen dependence on finite raw materials, they reduce the environmental damage caused by mining. Consequently, the circular economy is increasingly regarded as a viable economic strategy that conserves resources for future generations.

Modern consumer culture often assumes that expanding the range of available options will automatically make people freer and happier, yet a growing body of research suggests the opposite may sometimes be true. (A) Having considered so many possibilities, a person naturally imagines the specific advantages that a different, unchosen option might have offered, and this imagined comparison quietly erodes contentment with what was actually selected. (B) When individuals select from an enormous set of alternatives, satisfaction with the final choice frequently declines rather than rises, even when the chosen item is objectively excellent. (C) This decline stems not from the difficulty of deciding but from what happens afterward, once a decision has already been made.

Bacteria have been cutting up invading viral DNA for billions of years, long before any scientist thought to borrow the trick for use in a laboratory. (A) Once Cas9 arrives at the target site, it slices both strands of the DNA helix, and the cell's own repair machinery rushes in to mend the cut, often introducing a small change in the process. (B) By supplying the cell with a template during this repair step, scientists can direct that machinery to insert a specific new sequence, and what once required years of painstaking work to alter a single gene can now be accomplished within days. (C) The CRISPR-Cas9 system, as it is now known, relies on a short guide RNA that matches a specific DNA sequence, leading a scissor-like enzyme called Cas9 directly to that exact location in the genome.

Desalination, the process of removing dissolved salts from seawater to produce fresh water, has increasingly been adopted by coastal regions facing chronic water scarcity. (A) Pumping seawater through membranes at high pressure also demands substantial electricity, so plants powered by fossil fuels can worsen 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 broader conservation strategy. (B) 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 harm marine life. (C) 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 consumes far less energy than the thermal distillation once dominant in the industry, it has become the preferred choice for large-scale plants.

주어진 문장: The first of these, often called System 1, operates beneath conscious awareness, shaping judgments before a person even realizes a decision is being made. Psychologists studying human judgment often describe the mind as operating through two distinct systems rather than a single unified process. ( ① ) System 1 works quickly and automatically, generating impressions and snap judgments without any noticeable sense of effort, much as a driver instinctively brakes when a ball suddenly rolls into the street. ( ② ) System 2, by contrast, is slow, deliberate, and demanding, engaged only when a problem requires careful calculation or conscious reasoning. ( ③ ) Most daily decisions are handled almost entirely by System 1, which allows people to function efficiently without exhausting their limited mental resources. ( ④ ) This efficiency comes at a cost, however, because System 1 relies on simple shortcuts that can produce systematic errors, and System 2 is frequently too lazy or too occupied to double-check them. ( ⑤ )

주어진 문장: Her plan, however sincere at the time, quietly dissolves the moment a more immediate temptation appears. Consider a student who genuinely intends to study for tomorrow's exam yet, when the evening actually arrives, chooses to watch another episode of a favorite show instead, promising herself she will surely study harder next week. ( ① ) This pattern, in which the pull of an immediate pleasure overwhelms the value of a distant benefit, appears again and again across ordinary life, from postponed exercise to delayed savings. ( ② ) People do not necessarily fail to understand that the future reward matters more; rather, whatever happens right now simply feels disproportionately more urgent and vivid than anything scheduled for later. ( ③ ) Behavioral economists note that this preference weakens considerably once both options are pushed into the future, which is why planning a diet starting next month feels effortless compared with skipping dessert tonight. ( ④ ) Such inconsistency helps explain why gym memberships go unused and retirement accounts remain underfunded, despite people's stated intentions. ( ⑤ ) Recognizing this pull toward the present, therefore, allows individuals and institutions to design commitments that quietly protect long-term goals from short-term temptation.

This puzzling inconsistency is not, as it turns out, a matter of chance. Two patients diagnosed with the same disease and prescribed the same medication can respond in strikingly different ways, one recovering quickly while the other experiences little benefit or even harmful side effects. ( ① ) Precision medicine starts from the observation that this variation often traces back to differences buried in each patient's genome. ( ② ) These differences determine how efficiently a body absorbs, breaks down, or responds to a given drug. ( ③ ) By sequencing a patient's DNA before treatment begins, doctors can increasingly predict which medication is likely to work best and at what dose, replacing a strategy once described as one-size-fits-all with something closer to a tailored fit. ( ④ ) This approach has proven especially valuable in cancer treatment, where tumors from two patients with the same diagnosis may carry entirely different genetic mutations that respond to entirely different drugs. ( ⑤ ) Widespread adoption still faces real obstacles, since genetic sequencing remains expensive in many regions and few doctors have been trained to interpret the flood of genetic data such tests now produce.