영어 모의고사 (자동 편성)

For decades, most vaccines worked by ①injecting a weakened or inactivated version of a pathogen, coaxing the immune system into recognizing an enemy it had never truly fought. mRNA vaccines take a fundamentally different route, ②delivering only a short genetic instruction wrapped in a protective lipid capsule, one that tells the body's own cells how to manufacture a single harmless piece of a virus's outer surface protein. Once those cells display the fragment, the immune system learns to recognize it as foreign and ③builds a defense, without ever having encountered the actual pathogen. Because the vaccine contains no live virus and cannot alter a cell's own DNA, developers can redesign the genetic instructions within weeks whenever a pathogen ④mutating, rather than starting the years-long process required for traditional vaccines. This speed, first proven on a global scale during a recent pandemic, has convinced many researchers that the same platform could eventually ⑤be adapted to fight diseases far beyond infectious illness, including certain cancers.

A striking proportion of individual investors believe their own stock-picking ability to be above average, a statistical impossibility given that only half of any population can genuinely outperform the rest, yet a pattern that ①persists with remarkable consistency across surveys. This tendency, known as overconfidence bias, leads investors ②to trade more frequently than a more cautious assessment of their own skill would justify. Extensive research comparing the trading records of numerous individual accounts has demonstrated that investors who trade most frequently ③tends to earn substantially lower returns than those who trade rarely, largely because transaction costs accumulate and because frequent trading often reflects overconfident reactions to short-term noise rather than genuine insight. Overconfidence also manifests in the tendency to underestimate the range of possible outcomes, ④causing investors to concentrate their holdings in a small number of assets they feel certain about rather than diversifying across a broader portfolio. Paradoxically, then, the very confidence that motivates investors to act decisively often ⑤undermines the outcomes they are trying to achieve.

Jina used to fill her apartment with items she rarely used, believing that owning more things would make her happier. After moving twice within a single year, she grew exhausted from packing boxes filled with clothes she had never worn and gadgets she had forgotten she ①owned. Frustrated, she decided to try a minimalist lifestyle, ②keeping only objects that served a clear purpose or brought her genuine joy. At first, friends ③questioned why she was giving away perfectly good furniture and clothing. Gradually, however, she noticed that her small apartment ④felt calmer and easier to manage. Inspired by her experience, several of her friends began ⑤adopt similar habits, questioning purchases they once made without thinking.

Beyond restoring lost function, engineers are now exploring implants and prosthetics ①designed to give healthy people abilities beyond ordinary human limits, from night vision to reaction times faster than any athlete could achieve through training alone. Supporters frame this as simply the next step in a long history of human enhancement, no different in principle from eyeglasses or vaccines, only more direct. Critics counter that earlier enhancements ②were broadly available to anyone regardless of wealth, while cutting-edge neural and physical implants are likely ③remaining expensive for decades, potentially splitting society into those who can afford enhancement and those who cannot. If such a divide hardens, competitive advantages in school, sports, and the workplace could come to depend less on effort than on access to capital. What began as a medical tool for restoring what was lost, in other words, may end up ④redefining the baseline of what counts as an ordinary human being ⑤altogether.

Financial markets occasionally experience episodes in which asset prices rise far beyond any level that careful analysis of underlying fundamentals could justify, a phenomenon commonly attributed to herd psychology. During such episodes, individual investors often conclude that continuing to buy is reasonable simply because so many others are doing the same, rather than because any independent evaluation supports the purchase. Understanding market bubbles thus requires looking beyond conventional economic fundamentals toward the ___________ that binds individual investors into a single, momentum-driven crowd.

Among the many tools available to those who design choice environments, few are as quietly powerful as the default option, the alternative that takes effect automatically unless a person actively selects something else. Because changing a default requires deliberate effort, many individuals simply accept whatever arrangement has been preselected for them. Designers of public policy and digital platforms alike have consequently come to recognize that setting a thoughtful default can achieve outcomes that ___________ often struggle to accomplish through persuasion or financial incentive alone.

Hospitals are increasingly adopting AI tools that can scan medical images and flag potential tumors faster than experienced radiologists. When an AI system misses a diagnosis that a human doctor would likely have caught, responsibility becomes difficult to assign. The doctor may argue that they simply trusted a required tool, the hospital may blame the software company, and the software company may argue that no algorithm can be expected to be perfect. As a result, _______________.

Starting a business as a teenager comes with both benefits and difficulties. (A) On the other hand, many young entrepreneurs lack enough money or experience to grow their business quickly. (B) Because of this balance, more schools are now offering entrepreneurship clubs to support young business owners. (C) On the positive side, running even a small business teaches skills like budgeting and marketing.

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

None of these individual passersby, however, has any direct evidence that the food itself is worth the wait. Consider how a line forms outside a small restaurant on an otherwise quiet street. ( ① ) The first few patrons may have arrived simply because of a personal recommendation or a delayed reservation, factors entirely unrelated to the restaurant's actual quality. ( ② ) As the line grows, passersby begin to notice it and, assuming that such popularity must be earned, decide to join the queue themselves. ( ③ ) Each additional person who joins makes the line appear even more compelling to the next passerby, creating a self-reinforcing cycle of imitation. ( ④ ) They are, in effect, relying entirely on the visible behavior of strangers as a proxy for information they do not personally possess. ( ⑤ ) The restaurant's true culinary merit, whatever it may be, has become almost irrelevant to the continued growth of the line.