영어 모의고사 (자동 편성)

When people evaluate their personal contribution to water scarcity, they often consider only the water that flows directly from household taps, overlooking a far larger quantity ①consumed indirectly through the goods they purchase. The water footprint, a concept that extends this narrow view, measures the total volume of freshwater used to produce the goods and services an individual or a nation consumes. Central to this concept is the notion of virtual water, the water ②embedded invisibly within a product, from irrigating cotton fields to livestock ③raised for meat. For instance, producing a kilogram of beef can require several thousand liters of water, whereas a kilogram of vegetables typically demands a fraction of that amount. Nations that import water-intensive goods rather than ④producing them domestically are importing virtual water from regions that may face severe shortages. Critics caution, however, that focusing exclusively on aggregate volume can mislead policymakers, since a liter of water drawn from a region suffering drought ⑤carry far greater consequences than one drawn from a water-abundant area.

In a classic experiment inspired by Keynes's beauty contest analogy, participants choose a number between zero and one hundred, and the winner is whoever selects the number closest to two-thirds of the average of all guesses ①submitted. A perfectly rational player, ②assuming every other participant reasons with unlimited depth, would conclude the equilibrium number is zero, since reasoning about others' reasoning collapses the average toward that single point. In practice, however, actual guesses rarely converge on zero; most participants stop reasoning after a round or two of imagining what others might guess, ③producing average guesses that cluster between twenty and thirty-five. This gap between theoretical equilibrium and observed behavior reveals that human reasoning is bounded, ④capable of anticipating a few steps ahead but rarely capable of iterating the process indefinitely. Economists use this game as a diagnostic tool, since the number a person submits ⑤reveal how many levels of strategic thinking that person is willing to perform.

Picture a woman who ①receive a plain ceramic mug as a free gift at a conference and, later that afternoon, refuses to sell it for anything less than triple its price in the gift shop downstairs. Before she ②owned the mug, she would never have paid extra for it; once it became hers, however, its value in her mind rose sharply, simply because she now possessed it. Researchers have repeatedly observed this pattern across many everyday objects, from coffee mugs and concert tickets to office chairs and old furniture ③inherited from relatives. Owners consistently demand more money ④to give something up than buyers are willing to offer for that very same item, revealing a curious asymmetry rooted purely in possession itself. Some economists argue that this effect explains why negotiations over inherited property so often collapse, since each side quietly ⑤attaches a different value to what it currently holds.

For much of the twentieth century, memory researchers assumed that once a memory ①had been consolidated—transformed from a fragile, short-term trace into a stable, long-term representation—it remained essentially fixed, immune to further modification unless the underlying neural circuitry was physically damaged. This assumption, however, was overturned by a body of research demonstrating that the act of retrieval itself ②can destabilizing a previously consolidated memory, ③rendering it temporarily susceptible to alteration before it is, in a sense, filed away again. During this narrow window, ④which typically lasts only a few hours, the memory can be strengthened, weakened, or even subtly distorted by new information encountered in the interim, after which it must undergo a second round of stabilization, a process now widely referred to as reconsolidation. Consequently, what we experience as a stable recollection may actually be a continuously revised construction, reshaped every time it ⑤is summoned into conscious awareness and returned to storage.

Change blindness refers to a striking limitation of human perception in which observers fail to notice substantial ① alterations to a visual scene, provided the change occurs during a brief disruption such as an eye movement or a momentary obstruction. In a now-famous demonstration, researchers showed participants two versions of a photograph in alternation ②, separated by a short blank screen, and asked them to identify what had changed. Even when an entire building disappeared or a person's clothing shifted color, many viewers stared at the picture without detecting anything unusual ③. This phenomenon occurs because visual attention, rather than passively recording every detail like a camera, actively selects only a narrow ④ subset of information for processing at any given moment. Whatever falls outside that narrow spotlight is represented only sparsely, if at all, leaving it vulnerable to being overwritten without notice. Consequently, change blindness demonstrates that our impression of a rich, complete visual world is, to a surprising extent, an illusion constructed by the mind, not an unreliable ⑤ record of external reality.

A small bakery once sold a basic loaf of bread for three dollars and a premium loaf for six dollars, and most customers, uncertain about the added value of the pricier option, simply bought the ①cheaper one. The owner then introduced a third option: a slightly larger premium loaf priced at seven dollars, one that was clearly ②inferior to the six-dollar loaf in terms of value for money. Almost nobody chose the new seven-dollar loaf, yet sales of the six-dollar loaf ③fell sharply, because it now appeared to be an obvious bargain when placed beside the inferior newcomer. This pattern, confirmed across countless pricing experiments in other markets, demonstrates that people ④rarely judge options in isolation; instead, they evaluate choices relative to whatever alternatives happen to be nearby. Businesses have since learned to design such decoys deliberately, not expecting them to be purchased at all, but hoping they will make a specific target option look far more ⑤attractive by comparison.

Factories that once employed hundreds of workers on an assembly line now run with a ①fraction of that staff, as robotic arms handle tasks that used to require human hands. Economists have long debated whether this shift destroys jobs or simply transforms them. Historical evidence offers some ②comfort: previous waves of automation eventually created new categories of work that no one had predicted. However, critics point out that earlier transitions unfolded over generations, giving workers ③ample time to retrain, whereas today's robots are being deployed at a pace that leaves little room for adjustment. A factory worker displaced this year cannot simply wait for a new industry to emerge decades from now. For this reason, many economists argue that the real ④challenge is not the robots themselves, but the ⑤sluggish speed at which society is expected to adapt to them.

Why do people often ①overvalue objects they have partly built themselves, even when the finished product is objectively ②inferior to something they could have simply purchased? This puzzle, which researchers named 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 assembled a plain storage box were willing to pay nearly as much for their own ③imperfect 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 poured into a task, individuals become ④reluctant to judge the outcome objectively, because doing so would require admitting that their effort was partly wasted. This tendency helps explain why consumers often prefer products that demand some degree of personal assembly, even when a comparable finished item is available at a ⑤higher price and requires no time investment whatsoever.

주어진 문장: This experiment shows that consumers do not simply weigh money saved against money spent, but react to the very presence or absence of a price tag itself. Classical economic theory assumes that consumers evaluate every price change in the same rational way, weighing marginal benefit against marginal cost regardless of the absolute numbers involved. ( ① ) Behavioral economists, however, have discovered a striking exception: the moment a price drops to exactly zero, people's judgment shifts in a way that ordinary discounting cannot explain. ( ② ) In a well-known laboratory experiment, participants chose between two chocolates, one of higher quality priced at a small fee and one of lower quality offered for free. ( ③ ) When both prices were merely reduced by the same amount, most participants still preferred the higher-quality option. Yet once the cheaper chocolate's price was lowered to zero, the majority abruptly switched their preference, even though the price gap between the two options had not actually changed. ( ④ ) Researchers explain this reversal by noting that a free item carries no perceived risk of loss, which makes it feel disproportionately attractive compared with any option that still requires payment, however small. ( ⑤ )

At that distant point in time, the future increase feels almost costless, since no immediate sacrifice is required. One practical application of hyperbolic discounting involves a savings program that gradually raises an employee's contribution rate over several years. ( ① ) Employees are first asked to commit, well in advance, to increasing their savings rate at a specific future date, often timed to coincide with an expected salary raise. ( ② ) Because the commitment applies only to a point far in the future, the vast majority of employees readily agree to the plan. ( ③ ) When the scheduled date finally arrives, the increase takes effect automatically unless the employee actively opts out, and remarkably few do. ( ④ ) The program succeeds precisely because it separates the decision from the discomfort, asking employees to commit when the cost feels abstract rather than immediate. ( ⑤ ) In this way, a well-timed program can help individuals overcome the very bias that would otherwise prevent them from saving adequately for the future.