영어 모의고사 (자동 편성)

A rational approach to decision-making dictates that only future costs and benefits should influence a choice, since resources already spent ①cannot be recovered regardless of what is decided next. In practice, however, people routinely allow such irrecoverable expenditures, known as sunk costs, ②to shape their subsequent decisions, a pattern referred to as the sunk cost fallacy. A moviegoer who finds a film thoroughly disappointing after the first thirty minutes will often remain in the theater until the credits roll, ③reasoning that leaving early would somehow waste the money already spent on the ticket. Organizations exhibit the same fallacy on a larger scale: a company that ④have invested heavily in a failing project frequently continues funding it, arguing that abandoning the project now would render the prior investment meaningless. Yet continuing to invest in a venture destined to fail merely adds new losses to old ones, ⑤compounding the very waste the decision-makers hoped to avoid.

Suppose a mysterious being with a near-perfect track record of predicting human choices presents a player with two boxes. Box A always contains a visible thousand dollars, while Box B contains either a million dollars or nothing at all, depending on a prediction the being made before the game even began. If the being predicted the player would take only Box B, it ①emptied the box entirely; if it predicted the player would take both boxes, it left Box B empty. The player may choose to take only Box B, or to take both boxes, and the prediction has already been made and cannot change. One line of reasoning says taking both boxes is ②strictly better, since whatever is already inside the boxes cannot be altered by the player's choice at this point. A second line of reasoning says taking only Box B is better, since the being's near-perfect ③accuracy means that choosing both boxes almost guarantees an empty Box B. This apparent ④conflict between two seemingly sound arguments has made the puzzle a lasting ⑤challenge for decision theory.

Classical economic theory assumes that consumers evaluate every price change in the same ①rational way, weighing marginal benefit against marginal cost regardless of the absolute numbers involved. Behavioral economists, however, have discovered a ②striking exception: the moment a price drops to exactly zero, people's judgment shifts in a way that ordinary discounting cannot explain. 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. When both prices were merely reduced by the same amount, most participants still ③avoided the higher-quality option. Yet once the cheaper chocolate's price was lowered to zero, the majority ④abruptly switched their preference, even though the price gap between the two options had not actually changed. Researchers explain this reversal by noting that a free item carries no perceived risk of loss, which makes it feel disproportionately ⑤attractive compared with any option that still requires payment, however small.

Standard economic theory assumes that money is fungible, meaning that a dollar earned as salary is functionally ①identical to a dollar received as a tax refund or won in a lottery. In practice, however, people routinely sort their finances into separate mental accounts, treating money differently depending on its source or intended purpose. A household that would never dip into its retirement savings to pay for a vacation might nonetheless spend an unexpected bonus on that very trip without ②hesitation, even though both sums are, in strictly financial terms, equally available for either purpose. This ③compartmentalization can produce decisions that appear ④consistent when viewed through a purely rational lens: the same individual who diligently saves a portion of every paycheck may simultaneously carry high-interest credit card debt, effectively paying more to borrow than they earn on their savings. Mental accounting is not always harmful, however; by assigning specific categories to specific funds, individuals can also impose useful ⑤discipline on their spending, preventing money earmarked for essential needs from being diverted toward impulsive purchases.

Prospect theory proposes that the subjective value of money is not a straight line but a curved function. In the domain of gains, the function bends downward as amounts increase. A parallel pattern appears among losses, where the curve bends in the opposite direction, yet sensitivity still fades as the amount grows larger. This tendency, known as diminishing sensitivity, explains why _______________. Understanding this curvature allows economists to predict decisions that a simple, linear model of value could never anticipate.

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. The CRISPR-Cas9 system relies on a short guide RNA that matches a specific DNA sequence, _______________. 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. By supplying the cell with a template during this repair step, scientists can direct that machinery to insert a specific new sequence rather than merely disabling the original gene. What once required years of painstaking work to alter a single gene can now be accomplished within days.

Traditional economic models predict that a rational individual offered any positive sum of money, however small, should accept it without hesitation. A simple experimental exercise known as the ultimatum game consistently contradicts this prediction: when the proposer offers a division perceived as unfair, the second participant frequently rejects the offer entirely, leaving both parties with nothing. Such evidence challenges the assumption that economic actors pursue only their own material self-interest, demonstrating instead that considerations of ___________ can override the straightforward pursuit of maximum individual gain.

Millions of people now wear devices that continuously track their heart rate, sleep patterns, and daily activity, generating an intimate stream of health data. (A) In practice, however, the terms of service that few people read often grant the manufacturer broad rights to store, analyze, and even sell anonymized versions of that data. (B) Users generally assume this information belongs to them, since it is drawn directly from their own bodies. (C) This arrangement becomes especially troubling when health data influences decisions far beyond fitness, such as insurance premiums or employment screening.

A plastic bag that fully decomposes within months rather than lingering for centuries sounds almost too convenient to be real, yet certain bioplastics on the market do exactly that under the right conditions. (A) Not every bioplastic biodegrades quickly, however, and some marketed as eco-friendly break down only in industrial composting facilities that reach conditions rarely found in a backyard compost heap or the open ocean. (B) Unlike conventional plastic, derived almost entirely from petroleum, many bioplastics are synthesized from renewable feedstocks such as corn starch or sugarcane, sometimes with the help of bacteria engineered to produce plastic-like polymers as a byproduct of their metabolism. (C) Critics point out that growing crops for bioplastic production can compete with food crops for farmland and water, which is why researchers are now exploring bioplastics made from agricultural waste and algae instead of dedicated crops.

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.