영어 모의고사 (자동 편성)

Blockchain technology was originally promoted as a way ①to remove the need for trusted middlemen, allowing strangers to exchange value directly and verify transactions through a shared, tamper-resistant ledger rather than through a bank or government agency. In theory, this design ②distributes power away from any single institution and toward the network as a whole. In practice, however, a small number of large players have come to dominate many blockchain networks, ③controlled enough computing power or currency to influence outcomes that were supposed to be decided collectively. Critics note a further irony: when something goes wrong, there is often no institution left ④to appeal to, since the entire system was designed precisely to eliminate that kind of central authority. Whether decentralization can survive this concentration of power ⑤remains one of the technology's most unresolved questions.

Social media platforms rarely show users a neutral stream of information. Instead, recommendation algorithms ①are optimized to maximize engagement, and content that provokes strong emotion, particularly outrage, tends to hold attention longer than balanced reporting ever could. Over time, users ②exposed to a steady diet of emotionally charged content may come to believe that extreme opinions are far more common than they actually are, simply because those opinions ③dominate their feed. Researchers describe this as a distorted mirror: the platform reflects not society as it truly is, but a version ④shaping by whatever keeps people scrolling. Some platforms have experimented with reducing the visibility of outrage-driven content, only ⑤to see user engagement drop.

In the late nineteenth century, the psychologist Hermann Ebbinghaus undertook a rigorous investigation of forgetting ①by serve as his own experimental subject. He memorized thousands of meaningless three-letter syllables ②so that prior knowledge could not skew his results. After learning each list to perfection, he tested his retention at intervals ③ranging from twenty minutes to a month later. He recorded how many repetitions were required to relearn the material each time. The resulting curve revealed a consistent pattern. Forgetting proceeds rapidly during the initial hours following learning, then gradually ④decelerates until the rate of loss becomes almost imperceptible. Roughly half of the acquired information vanished within the first hour alone. Yet whatever survived that initial plunge tended to persist for much longer periods. Ebbinghaus further found that ⑤distributing study sessions across several days produced better retention than cramming the same repetition into one sitting.

When people recall precisely where they were and what they were doing at the moment they learned of some momentous public event, the resulting memory often feels extraordinarily vivid, as though it ①had been etched into the mind with photographic precision; researchers have termed such recollections flashbulb memories. Proponents of this concept once ②argued that the emotional intensity and surprise ③accompanying such events ④triggers a distinct neural mechanism that preserves details with unusual fidelity, effectively exempting them from the gradual decay that afflicts ordinary memories. Subsequent longitudinal studies, however, have complicated this picture considerably: when researchers compared accounts gathered within days of an event to accounts gathered years later, they discovered that details had frequently been altered, omitted, or even fabricated, even though the individuals reporting them expressed unwavering confidence in their accuracy. This persistent mismatch between subjective certainty and objective consistency implies that flashbulb memories, far from being flawless recordings, are reconstructed narratives ⑤shaped by rehearsal, media exposure, and the passage of time.

A few years ago, spotting a manipulated video ①required a trained eye and specialized software. Today, freely available applications allow almost anyone ②to swap a face or fabricate a voice convincingly enough to fool casual viewers within minutes. This shift has quietly undermined one of the oldest assumptions in human communication: that seeing and hearing something ③are a reasonably reliable way to confirm it happened. Journalists now face the burden of ④verifying footage that once would have been accepted as self-evident proof. Perhaps more troubling than any single fake video is the broader effect on public trust, in which genuine footage can ⑤be dismissed as fabricated simply because deepfakes exist.

Working memory refers to the mental workspace in which information is ①temporarily held and manipulated while a person performs a cognitive task. Such tasks include solving an arithmetic problem, following a rapid conversation, or holding a phone number in mind before dialing it. In the mid-twentieth century, the psychologist George Miller proposed that this workspace could accommodate roughly seven discrete items. His claim proved so ②influential that it became widely known as the magic number seven. Subsequent research, however, revealed that Miller's estimate was somewhat ③conservative, since it failed to account for the complexity of the material being remembered. Nelson Cowan later argued that when rehearsal strategies are ④prevented and attention is tightly controlled, genuine capacity hovers closer to four items rather than seven. This discrepancy suggests that what earlier studies had measured was not raw storage capacity itself but a hybrid quantity ⑤inflated by clever strategies. Contemporary psychologists therefore distinguish between the fixed limit of working memory and the flexible techniques that allow individuals to transcend that limit.

Behavioral economists have long observed that people tend to feel the pain of losing something more intensely than the pleasure of gaining an equivalent amount, a tendency known as loss aversion. Consider an investor who refuses to sell a declining stock, clinging to the hope that its price will eventually recover, even when all available evidence indicates that selling and reinvesting elsewhere would be more rational. As a result, loss aversion frequently pushes individuals toward ___________ rather than toward the outcome that would maximize their overall welfare.

Suppose you meet a quiet, gentle man who speaks softly, tends a small garden, and organizes his bookshelf with meticulous care. (A) This judgment, however, ignores a crucial fact: truck drivers vastly outnumber florists in almost every country, which means that, statistically, he is far more likely to belong to the larger group regardless of how well he fits the flower-shop image. (B) Relying on resemblance to a familiar category rather than on underlying numerical proportions, known among researchers as representativeness, leads people to overlook these base rates almost automatically. Even trained professionals, who should know better, often fall into the same trap when a vivid description feels more convincing than plain statistics. Consequently, teaching people to pause and ask how common something actually is, instead of merely how typical it appears, can meaningfully improve the accuracy of everyday predictions and reduce costly errors in judgment. (C) Asked whether he is more likely a florist or a truck driver, most people instinctively choose florist, since his personality matches the stereotype so neatly.

Mental accounting also shapes how consumers respond to windfalls of different sizes and origins. (A) A modest windfall, such as a small cash-back reward, tends to be absorbed into everyday spending and disappears almost unnoticed within a household's general budget. (B) A substantial windfall, by contrast, such as an inheritance or a large bonus, is more likely to be mentally assigned to a separate category, sometimes labeled as "extra" money reserved for investment or a significant purchase. (C) This difference in treatment suggests that the perceived significance of a sum, rather than its objective purchasing power, determines the mental account into which it is placed.

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 )