영어 모의고사 (자동 편성)

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.

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

Generative AI systems learn to write, draw, and compose by studying enormous collections of existing human work, much of ①which was created without the artists' knowledge or consent. Supporters of the technology argue that this process ②resembles how a human student learns by studying the masters, absorbing style and technique rather than copying specific pieces. Critics respond that the comparison ③breaks down at scale: a single AI model can absorb millions of works in days and then generate outputs that directly compete with the very artists whose work ④trained it. Courts around the world are now ⑤ask to decide whether training an algorithm on copyrighted material counts as fair use or as infringement.

Long before calculus existed, the Greek philosopher Zeno constructed a series of paradoxes designed to show that motion itself might be logically ①impossible. In one version, a swift runner named Achilles races a slow-moving tortoise that is given a modest head start. Common sense insists that Achilles will quickly ②overtake the tortoise, yet Zeno's argument suggests otherwise. By the time Achilles reaches the tortoise's starting point, the tortoise has crawled a little further ahead, and this process repeats endlessly, generating an infinite number of ③smaller and smaller gaps that Achilles must apparently cross one after another. Zeno concluded that Achilles could never actually catch the tortoise, a conclusion that plainly ④contradicts everyday experience. Modern mathematics eventually resolved the paradox by showing that an infinite series of shrinking distances can still sum to a finite total, ⑤preventing motion from ever being completed in a finite amount of time.

Desalination, the process of removing dissolved salts from seawater to produce fresh water, has increasingly been adopted by coastal regions facing chronic water ①scarcity. Most modern facilities rely on reverse osmosis, a technique in which seawater is forced through membranes whose microscopic pores block salt while letting water molecules pass. Because this method ②consumes far less energy than the thermal distillation once dominant in the industry, it has become the preferred choice for large-scale plants. Nevertheless, desalination remains an inherently costly and environmentally burdensome solution, a fact often overlooked amid enthusiasm for ending water shortages. For instance, the process generates a ③concentrated byproduct called brine, which, when discharged without adequate dilution, can raise local salinity to levels that harm marine life. Pumping seawater through membranes at high pressure also demands substantial electricity, so plants powered by fossil fuels can ④alleviate the emissions that intensify drought. Therefore, engineers increasingly argue that desalination should be treated not as a stand-alone remedy but as one component of a ⑤broader conservation strategy.

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 ①laboratory. The CRISPR-Cas9 system, as it is now known, relies on a short guide RNA that ②matches a specific DNA sequence, leading a scissor-like enzyme called Cas9 directly to that exact location in the genome. Once Cas9 arrives at the target site, it ③repairs 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 ④insert 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, a shift in ⑤speed that has reshaped nearly every corner of biological research.

French sociologist Pierre Bourdieu introduced the concept of habitus to describe the deeply ingrained dispositions, tastes, and ways of perceiving the world that individuals absorb through years of socialization within a particular social class. Habitus operates below conscious awareness, so that a person's habitus feels entirely natural even though it was produced by specific social conditions. Bourdieu argued that habitus allows privilege to reproduce itself across generations without any explicit coercion, since children raised in advantaged households absorb the tastes and manners that institutions such as elite schools implicitly reward, while children from other backgrounds may find the same institutions subtly unfamiliar. Because habitus feels like personal identity rather than social conditioning, individuals rarely recognize how thoroughly their preferences have been shaped by class position, which helps explain why _______________.

Imagine a teleportation device that scans every atom in your body, transmits that information to a distant station, and reconstructs an exact physical duplicate there, while destroying the original body in the process. (A) Philosophers, however, are troubled by a version of the same device that malfunctions: instead of destroying the original, it leaves the original body intact while still creating a perfect duplicate elsewhere. (B) Now two people exist, each with identical memories and an equally strong claim to being the original traveler, and there is no principled way to decide which one is the real continuation of the person who entered the machine. (C) From the traveler's point of view, stepping into the machine and stepping out on the other side would feel utterly seamless, complete with continuous memories and a sense of having simply walked through a door.

Confirmation bias becomes particularly consequential in political discourse, where citizens must evaluate competing claims about complex issues. (A) As a result, exposure to more information does not necessarily produce more accurate beliefs; it can instead deepen existing divisions by giving each side additional material that appears to validate its own position. (B) Voters who favor a particular policy tend to seek out news sources and commentators who share that view, while largely avoiding those who might challenge it. (C) This selective consumption means that two people examining ostensibly the same news environment can end up with radically different, mutually reinforcing interpretations of events.

In other words, no single app may intend to expose such sensitive information, but the combination of many small pieces can. Every time a smartphone connects to a cell tower or a Wi-Fi network, it quietly records a data point that can later be pieced together into a detailed map of where its owner has been. ( ① ) Most users agree to this tracking without reading the fine print, assuming that a single company's database poses little threat. ( ② ) The real danger, however, emerges when location data from multiple sources is combined. ( ③ ) A pattern that reveals a person's home, workplace, and daily route can expose far more than any single app ever intended to share, including medical visits or private relationships. ( ④ ) Companies often argue that anonymized data cannot be traced back to individuals, yet researchers have repeatedly shown otherwise. ( ⑤ )