영어 모의고사 (자동 편성)

Time travel to the past has long fascinated physicists and philosophers alike, but it also generates a famously troubling ①contradiction. Suppose a traveler journeyed backward in time and, through some combination of accident and intention, prevented 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 have existed to make the trip in the first place. Yet if the traveler never made the trip, the grandfather would have ②survived to meet the grandmother after all, allowing the traveler to be born and eventually travel back in time. The story therefore ③loops endlessly, undermining itself at every turn rather than settling into any stable outcome. Some physicists resolve the paradox by arguing that any consistent timeline must ④permit such self-defeating actions to succeed freely, while others propose that a traveler who alters the past simply branches off into a separate, parallel timeline instead, an idea many find ⑤appealing precisely because it avoids the contradiction altogether.

Change blindness refers to a striking limitation of human perception in which observers fail to notice substantial 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, 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. This phenomenon occurs because visual attention, rather than passively recording every detail like a camera, _______________. 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 a faithful record of external reality.

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. 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. 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. 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 say that one of them is the real continuation of the person who entered the machine. This malfunction reveals that _______________.

A cotton plant that manufactures its own insecticide sounds like science fiction, yet it has been growing in fields around the world for decades. Scientists achieved this by isolating a gene from a soil bacterium that produces a protein toxic to specific insect pests but harmless to humans, then inserting that gene into the plant's own genome so that every cell manufactures the protective protein. _______________. Supporters point to yield increases and reduced pesticide spraying documented across millions of hectares, while critics worry about weeds and insects evolving resistance to these built-in defenses over time, much as bacteria evolve resistance to antibiotics. Regulatory agencies in most countries now require extensive testing before a genetically modified crop reaches the market, evaluating everything from its nutritional content to its potential effects on nearby ecosystems.

Consider a village green shared freely by every herder in the community, where each individual may graze as many animals as they wish without paying any fee. (A) The cost of the additional grazing, however, is spread thinly across every herder who uses the green, so no single individual bears more than a tiny fraction of the damage. (B) From the perspective of any single herder, adding one more animal to the shared pasture brings a clear personal benefit, since the extra income belongs entirely to that herder alone. (C) Because this calculation favors adding more animals for every rational herder, the shared pasture is gradually overgrazed until it can no longer support any animals at all.

The debate over nudging often centers on a single, deceptively simple question: does saving people from their own cognitive errors amount to genuine assistance or subtle manipulation? (A) Supporters respond that every choice architecture, whether intentionally designed or not, already influences behavior in some direction, so deliberately choosing a beneficial default is preferable to leaving the arrangement to chance or to the interests of profit-driven designers. (B) Opponents of nudging argue that any attempt to steer behavior, however gently, treats citizens as incapable of making sound decisions on their own and therefore undermines the very autonomy it claims to respect. (C) This rebuttal shifts the debate away from whether influence should exist at all and toward the more practical question of who should be trusted to design it and for what purpose.

Imagine a brilliant scientist named Mary who has spent her entire life inside a black-and-white room, learning everything physical science could ever teach about color. (A) Despite this complete physical knowledge, Mary herself has never actually seen a color, since every book, screen, and object in her world has been carefully restricted to shades of gray. (B) Suppose that one day Mary is finally released from the room and shown a ripe red tomato for the first time. (C) Philosopher Frank Jackson argued that Mary would learn something entirely new at that moment, namely what it actually feels like to see red, even though she already possessed every physical fact about color.

Long before cognitive scientists possessed the tools to observe the brain directly, Donald Broadbent proposed an influential model suggesting that the human capacity to process incoming sensory information is constrained by a structural bottleneck through which only a single stream of input can pass at any given instant. (A) This basic bottleneck principle continues to inform contemporary explanations of why multitasking so reliably degrades performance on demanding tasks. (B) According to this filter theory, multiple channels of stimulation, such as competing voices in a crowded room, are initially registered at a shallow, physical level, but only one channel is selected for further, meaning-based analysis while the rest are blocked from advancing beyond that early filter. (C) Although later researchers challenged the rigidity of this early selection mechanism, pointing to instances in which unattended information, such as one's own name, nevertheless breaks through and captures awareness, the core insight that attention imposes a genuine processing limit rather than a mere matter of willpower has remained remarkably durable.

Cognitive load theory begins from the premise that working memory, the mental workspace in which incoming information is temporarily held and manipulated, can accommodate only a limited number of novel elements at any given moment, in stark contrast to the comparatively vast capacity of long-term memory. (A) Because much of this burden arises not from the intrinsic difficulty of the subject matter itself but from the manner in which information is presented, instructional designers can substantially reduce unnecessary strain by eliminating redundant explanations, aligning visual and verbal elements so that learners need not mentally integrate scattered sources, and gradually withdrawing guidance as competence develops. (B) When instructional materials introduce more interacting elements than this narrow workspace can simultaneously process, learners experience what theorists call cognitive overload, a condition under which comprehension deteriorates and errors multiply regardless of how motivated the learner might be. (C) Ignoring these principles, by contrast, risks overwhelming novices with demands that exceed their processing capacity, however well-organized the underlying content may be.

This is precisely because probability estimates, however precise, fail to address the emotional discomfort that uncertainty itself produces. Financial advisors frequently observe that detailed statistical evidence fails to ease anxious clients' urge to sell during a market downturn, even when the evidence is presented clearly and repeatedly. ( ① ) Clients may intellectually accept the statistics while still feeling a strong urge to sell immediately in order to escape the discomfort of continued uncertainty. ( ② ) Advisors who instead acknowledge the client's fear directly, validating it as a normal response before presenting the data, tend to achieve better outcomes. ( ③ ) This approach treats the emotional response as a legitimate factor to be addressed rather than an irrational obstacle to be argued away. ( ④ ) The most effective financial guidance, in other words, engages both the emotional and analytical dimensions of a decision simultaneously. ( ⑤ ) Ignoring either dimension, evidence suggests, leaves clients more likely to make impulsive decisions they later regret.