영어 모의고사 (자동 편성)

Time travel to the past has long fascinated physicists and philosophers alike, but it also ①generates a famously troubling contradiction. Suppose a traveler journeyed backward in time and, through some combination of accident and intention, ②prevented their own grandfather from ever meeting their grandmother. If the grandfather never had children, the traveler themselves would never have been born, which means the traveler could never ③existed to make the trip in the first place. Yet if the traveler never made the trip, the grandfather would have survived to meet the grandmother after all, ④allowing the traveler to be born and eventually travel back in time. The story therefore loops endlessly, undermining itself at every turn rather than ⑤settling into any stable outcome.

A liver no longer has ①to sit inside a human body to be studied closely. By coaxing stem cells ②organizing themselves within a nutrient-rich gel, scientists can now grow miniature 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 ③grown on a plastic dish, which lose many of the cues that guide normal development, organoids let cells interact in three dimensions much as they would inside the body, yielding tissue ④that behaves in strikingly realistic ways. This fidelity has made organoids invaluable for testing how a drug affects human tissue before any patient is exposed, ⑤sparing researchers much of the burden of relying on animal models alone.

Imagine a distant planet identical to Earth in every visible respect, except that the clear liquid its inhabitants call "water" is not H2O but a different compound, XYZ, that happens to look, taste, and behave exactly the same. When an Earthling and a Twin Earthling each say the word "water," they seem to mean the ①same thing, since neither could tell the substances apart without a chemistry lab. Philosopher Hilary Putnam used this scenario to argue that the meaning of a word is not determined solely by what happens inside a speaker's head. Even though the two speakers hold ②opposing thoughts and mental images when they use the word, their statements refer to ③two different substances, because the underlying chemical composition, not personal belief, fixes what a word ultimately picks out. Meaning, Putnam concluded, depends ④partly on the world outside the mind, not merely on the ⑤private mental states of whoever happens to be speaking.

For patients born with a single faulty gene, the disease has traditionally been treated ①indirectly, managing symptoms for a lifetime rather than addressing the genetic error itself. Gene therapy attempts something more ambitious: delivering a corrected copy of the gene directly into a patient's cells, often using a ②reinforced virus stripped of its ability to cause illness as a delivery vehicle. Once inside the nucleus, the corrected gene can begin producing the protein the patient's body had always lacked, in some cases ③reversing symptoms that medication alone had never been able to touch. Early trials were haunted by serious ④setbacks, including cases in which the delivery virus triggered a dangerous immune reaction. Refined delivery methods have since made the treatment considerably ⑤safer, and regulators in several countries have now approved gene therapies for a small but growing number of rare inherited disorders.

Two drivers, equally distracted by their phones, run a red light in exactly the same careless manner. By pure chance, a child happens to be crossing the street in front of one driver but not the other; the first driver kills the child, while the second driver drives through safely and never even notices the danger. Although both drivers behaved identically and made exactly the same reckless choice, society judges them very differently: one faces criminal charges and lifelong guilt, while the other receives, at most, a minor traffic ticket. Philosophers call this troubling asymmetry moral luck, since factors entirely outside a person's control end up determining how severely we judge their moral character. If moral responsibility is supposed to depend only on what a person chooses and intends, this outcome seems deeply unfair, yet few people are willing to excuse the unlucky driver as if nothing worse had happened. Moral luck suggests that _______________.

A cricket contains, gram for gram, roughly as much protein as beef, yet requires a small fraction of the land, water, and feed needed to raise cattle. This efficiency has drawn growing attention from researchers looking for ways to feed a global population that continues to climb while arable land remains essentially fixed. Insects also convert feed into body mass with remarkable efficiency, since they are cold-blooded and therefore spend far less energy regulating body temperature than a cow or pig must. _______________. Food companies have responded by grinding insects into a flour that disappears into protein bars, pasta, and baked goods, letting consumers benefit from the nutrition without ever having to look an insect in the eye.

When a country physician named Edward Jenner noticed that milkmaids who had caught cowpox seemed immune to smallpox, he set in motion a medical revolution without fully understanding why it worked. (A) This method produced genuine successes, eventually eliminating smallpox worldwide and reducing diseases such as polio and measles, but each new vaccine still required years of laboratory work with no guarantee of success. (B) Advances in molecular biology eventually allowed researchers to isolate a single protein from a pathogen's surface, producing vaccines with fewer side effects, and the most recent shift toward delivering genetic instructions represents the latest chapter in this story. (C) For nearly two centuries afterward, vaccine development proceeded largely by trial and error, weakening or killing a pathogen and testing whether the resulting preparation could train the immune system without causing disease itself.

Political philosophers have long debated how much authority, if any, a government may legitimately claim over free individuals. (A) Critics on one side, the anarchists, insist that even this minimal government inevitably violates the rights of those who never consented to join it. (B) Robert Nozick imagined a hypothetical starting point in which people live without any state at all, each relying on private arrangements to protect their own person and property. (C) He argued that a minimal state, limited strictly to enforcing contracts and protecting citizens from violence, theft, and fraud, could arise gradually through a series of voluntary exchanges, without anyone's rights ever being violated along the way.

The underlying technique, it turns out, borrows more from a familiar desktop machine than one might expect. A printer that once produced only plastic prototypes can now deposit living cells layer by layer to build a structure that begins to resemble actual tissue. ( ① ) Bioprinting adapts the logic of conventional 3D printing, replacing plastic filament with a specialized ink made of living cells suspended in a gel that supports their survival while the shape sets. ( ② ) Printing a flat patch of skin or a simple blood vessel has already moved from laboratory curiosity to early clinical testing, since these tissues are thin enough for nutrients to reach every cell by diffusion. ( ③ ) Printing a solid organ such as a kidney remains a far greater challenge, because internal cells starve without their own blood supply. ( ④ ) No printer yet exists that can build a network of vessels fast enough to keep them alive. ( ⑤ ) Researchers are therefore focusing on hybrid strategies, printing a rough scaffold and then allowing the tissue to mature and grow its own vasculature over time, rather than attempting to print every vessel directly.

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 happen to be a perfect match for all five. Philosophers often pair the classic trolley problem with a companion case designed to test whether our moral intuitions are actually consistent. ( ① ) If the surgeon secretly killed the healthy visitor and transplanted the organs, five lives would be saved at the cost of one, exactly the same arithmetic used to justify diverting a runaway trolley onto a track with a single worker. ( ② ) Yet almost everyone who accepts the trolley diversion recoils immediately at the idea of the surgeon cutting up an unwilling patient, even though the numbers are identical in both cases. ( ③ ) Philosophers use this contrast to argue that outcomes alone cannot fully explain our moral judgments. ( ④ ) Something about directly using a person's body as a mere means, rather than an unintended side effect of redirecting harm, appears to matter deeply to most people's sense of right and wrong. ( ⑤ )