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.

Modern consumer culture often assumes that expanding the range of available options ①will automatically makes people freer and happier, yet a growing body of research suggests the opposite may sometimes be true. When individuals select from an enormous set of alternatives, satisfaction with the final choice frequently declines rather than rises, even when the chosen item ②is objectively excellent. This decline stems not from the difficulty of deciding but from what happens afterward, once a decision ③has already been made. Having considered so many possibilities, a person naturally imagines the specific advantages that a different, unchosen option ④might have offered, and this imagined comparison quietly erodes contentment with what was actually selected. The paradox, therefore, is that abundance can free people from external constraint while simultaneously ⑤trapping them in a private cycle of comparison and regret.

Philosophers often pair the classic trolley problem with a companion case ①designed to test whether our moral intuitions are actually consistent. Imagine a brilliant surgeon who has five patients, each dying from the failure of a different organ, and one healthy visitor in the waiting room whose organs ②happen to be a perfect match for all five. If the surgeon secretly killed the healthy visitor and transplanted the organs, five lives would ③save at the cost of one, exactly the same arithmetic used to justify diverting a runaway trolley onto a track with a single worker. Yet almost everyone who accepts the trolley diversion ④recoils immediately at the idea of the surgeon cutting up an unwilling patient, even though the numbers are identical in both cases. Philosophers use this contrast to argue that outcomes alone cannot fully explain our moral judgments, something that appears ⑤to matter deeply to most people's sense of right and wrong.

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.

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.

The immune system produces an almost limitless variety of antibodies, each shaped to latch onto one particular molecular target with remarkable specificity. 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. _______________. 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. This complexity keeps monoclonal antibody treatments considerably more expensive than most conventional drugs, a cost that continues to shape debates over pricing and access.

A single fertilized egg eventually gives rise to every cell type in the human body, from neurons to bone, a feat that has fascinated biologists for more than a century. Embryonic stem cells retain much of that original versatility, capable in principle of developing into almost any tissue, _______________. Because harvesting these cells traditionally required destroying a human embryo, the research provoked ethical objections fierce enough to slow funding and legislation in several countries for years. A breakthrough arrived when scientists discovered that ordinary adult skin cells could be reprogrammed into a state resembling embryonic versatility without ever touching an embryo. These induced pluripotent cells have not entirely erased the ethical debate, but they have opened a path for stem cell research that far more scientists and funding agencies are willing to support.

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 submitted. (A) In practice, however, actual guesses rarely converge on zero; most participants stop reasoning after a round or two of imagining what others might guess, producing average guesses that cluster between twenty and thirty-five. (B) A perfectly rational player, assuming 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. (C) This gap between theoretical equilibrium and observed behavior reveals that human reasoning is bounded, and economists use this simple game as a diagnostic tool for measuring the depth of that reasoning.

Social proof does not operate uniformly; its influence intensifies under specific conditions. (A) It grows especially powerful, for instance, when the situation is ambiguous and individuals lack a clear, independent basis for judging the correct course of action. (B) Conversely, when a task offers unambiguous, verifiable evidence, individuals rely far less on the behavior of others, since they can evaluate the situation directly for themselves. (C) This contrast implies that social proof functions primarily as a substitute for missing information, stepping in precisely where individual certainty runs out.

Critics warn that treating space as an open frontier for extraction risks repeating the same environmental and political mistakes that colonization caused on Earth. As private companies develop the technology to mine asteroids for rare metals and water, a legal question once confined to science fiction has suddenly become urgent: who, if anyone, owns the resources of outer space? ( ① ) Existing international treaties state that no nation may claim sovereignty over celestial bodies, but they say remarkably little about whether a private company may extract and sell what it finds there. ( ② ) Some governments have already passed domestic laws granting their own companies rights to material mined in space. ( ③ ) Other nations view this as a unilateral attempt to settle a question that should be decided collectively. ( ④ ) Supporters of space mining argue that new resources could ease shortages on Earth and fund further exploration. ( ⑤ )