영어 모의고사 (자동 편성)

Imagine watching a fair coin land on heads five times in a row and ①feeling an increasingly strong intuition that the next flip is somehow due to produce tails. This intuition, though psychologically compelling, rests on a basic misunderstanding of probability, since each flip of a fair coin ②remains entirely independent of every flip that came before it. The coin possesses no memory of its previous outcomes, and its probability of landing on tails on the sixth flip ③stays fixed at fifty percent regardless of how many heads preceded it. Casinos have long profited from this misconception, watching gamblers place larger bets after a losing streak simply because they mistakenly ④believing that a win has become statistically overdue. Economists have even documented the same error among trained professionals, including loan officers ⑤who grow more likely to approve a risky application simply because they recently rejected several applications in a row.

Anyone who has ever promised to finish a project "by Friday," only ①to still being working on it weeks later, has experienced the planning fallacy firsthand. This term describes the persistent tendency of individuals and organizations ②to 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 ③finished 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 ④ignoring the broader statistical record of similar projects that came before. Until such external correction becomes standard practice, ambitious deadlines will likely continue to be ⑤broken with remarkable consistency.

Why do people often overvalue objects they have partly ①built themselves, even when the finished product is objectively inferior to something they could have simply purchased? This puzzle, which researchers ②named after a furniture retailer famous for selling items that require home assembly, challenges the standard economic assumption that value is determined solely by an object's inherent qualities. In a series of experiments, participants who ③assembled a plain storage box were willing to pay nearly as much for their own imperfect creation as they were for a professionally built version, despite being fully aware of its flaws. Labor, it seems, functions as a kind of psychological investment: once effort has been ④pour into a task, individuals become reluctant to judge the outcome objectively, because doing so would require admitting that their effort was partly ⑤wasted.

As solar and wind power expand rapidly across national grids, engineers face a challenge that ①receive 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, ②producing supply that fluctuates constantly. One proposed solution involves large-scale battery storage systems, ③which absorb surplus electricity generated during periods of high output and release it later when generation declines. Grid operators must therefore invest in infrastructure capable of ④accommodating this variability, rather than assuming renewable sources can simply replace fossil fuels without adjustment. Without such investment, integrating renewable energy could paradoxically undermine the very reliability that modern electricity grids are ⑤expected to provide.

A liver no longer has to sit inside a human body to be studied ①closely. By coaxing stem cells to organize themselves within a nutrient-rich gel, scientists can now grow ②miniature three-dimensional structures called organoids, which reproduce much of the architecture and function of a real organ despite being no larger than a grain of rice. Unlike flat cultures grown on a plastic dish, which ③preserve many of the cues that guide normal development, organoids let cells interact in three dimensions much as they would inside the body, yielding tissue that behaves in strikingly ④realistic ways. This fidelity has made organoids invaluable for testing how a drug affects human tissue before any patient is exposed, sparing researchers much of the ⑤burden of relying on animal models alone.

Few ideas in policy debate provoke as much philosophical unease as the notion that a government might ①deliberately steer citizens toward better choices while leaving every option technically available. Defenders insist that freedom is ②preserved as long as no option is banned and no penalty is attached, arguing that a citizen who is merely steered, rather than coerced, remains free to choose otherwise. Critics counter that this defense rests on an ③impoverished notion of liberty, one that ignores how engineered defaults and calculated framing can shape decisions just as powerfully as an outright prohibition would. If a policy is designed because officials expect it to bypass conscious deliberation, these critics ask, can the resulting choice still be called ④autonomous, even though no law was broken? The dispute ultimately turns on what freedom actually requires: the mere absence of coercion, or a decision-making process that remains ⑤opaque and undistorted.

Psychologists studying human judgment often describe the mind as operating through two distinct systems rather than a single unified process. System 1 works ①quickly and automatically, generating impressions and snap judgments without any noticeable sense of effort. System 2, by contrast, is slow, ②deliberate, and demanding, engaged only when a problem requires careful calculation or conscious reasoning. Most daily decisions are handled almost entirely by System 1, which allows people to function ③efficiently without exhausting their limited mental resources. 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 ④diligent or too occupied to double-check them. As a result, a judgment often feels most confident precisely at the moment when it has skipped the careful scrutiny that could have caught its own mistake, leaving the thinker ⑤unaware of how easily the impression was formed.

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.

Selling products directly to customers has never been easier. More and more teenagers today dream of starting their own business someday. ( ① ) Some students design and sell handmade jewelry online, while others create simple mobile apps as a hobby. ( ② ) This growing interest is partly due to the internet, which makes it easy to reach customers without a physical store. ( ③ ) Starting a small business also teaches skills that traditional classes rarely offer, such as managing money and marketing a product. ( ④ ) However, young entrepreneurs face real challenges too, and mistakes can feel discouraging at first. ( ⑤ ) Still, most teen entrepreneurs say that failure taught them more than any success did.

A single careless movement, in other words, could ruin an entire page of otherwise careful work. When a classmate began writing her diary entries in elaborate, flowing calligraphy instead of ordinary handwriting, I assumed she was simply trying to make her notebook look decorative. ( ① ) Curious, I asked her to teach me one afternoon, and I quickly discovered that calligraphy demands far more patience than I had expected. ( ② ) Every stroke has to be planned before the pen touches the paper, since a brush pen cannot be casually corrected once ink has already spread across the page. ( ③ ) She told me that slowing her hand down to this deliberate pace actually helped her think more clearly, because rushing through a sentence in calligraphy simply was not physically possible. ( ④ ) What began as decoration for her gradually became a kind of meditation, a rare part of her day when she could not multitask or hurry. ( ⑤ ) I left that lesson with ink-stained fingers and a newfound respect for how much concentration a single beautifully written word can require.