영어 모의고사 (자동 편성)

The immune system produces an almost limitless variety of antibodies, each ①shaped to latch onto one particular molecular target with remarkable specificity. Monoclonal antibody drugs harness this natural precision by cloning a single antibody-producing cell in the laboratory, ②generating an army of identical antibodies built to recognize one target, such as a protein on a cancer cell or a molecule driving an autoimmune disease. Because the antibody binds only to its intended target, these drugs tend to spare healthy tissue far more effectively than traditional chemotherapy, ③which attacks any rapidly dividing cell regardless of whether it is cancerous. Manufacturing monoclonal antibodies remains far more complicated than producing a conventional small-molecule pill, since living cells must ④cultivating in carefully controlled bioreactors for weeks before the antibody can be purified and prepared for use. This complexity keeps monoclonal antibody treatments considerably more expensive than most conventional drugs, a cost that continues ⑤to shape debates over pricing and access.

Anyone who has ridden a bicycle after a decade away from one has likely ①experiencing muscle memory firsthand: the body seems to recall a complex skill almost instantly, even when conscious memory of the exact movements has faded. Contrary to what the name suggests, muscles themselves do not actually store memories; the phenomenon originates in the brain and nervous system, where repeated practice gradually ②shifts control of a well-learned movement from regions associated with conscious thought to areas that operate largely automatically. This shift explains why a skilled athlete can ③execute a complicated sequence of movements without consciously thinking through each individual step, freeing mental attention for strategy and decision-making instead. Interestingly, research also suggests that these neural pathways can remain partially intact even after long periods without practice, which is why relearning a skill is typically much ④faster than learning it for the very first time. Coaches often exploit this principle by ⑤ensuring that fundamental techniques are practiced correctly from the very beginning.

Exercise does far more than strengthen muscles and the heart; it also produces ①measurable changes within the brain itself. During sustained physical activity, the body releases a protein called brain-derived neurotrophic factor, which supports the growth of new neurons and ②strengthens connections between existing ones, particularly in regions associated with memory and learning. Studies comparing physically active students to sedentary peers have repeatedly found that the active group performs ③better on tests of attention and problem-solving, even when the exercise session ends well before the test begins. Researchers believe that exercise increases blood flow to the brain, delivering oxygen and nutrients more efficiently, while also ④raising levels of stress hormones that can interfere with clear thinking. Interestingly, aerobic activities such as running or swimming appear to produce more ⑤pronounced cognitive benefits than purely strength-based training.

Classical economic models typically assume that people discount future rewards at a constant rate, valuing a reward received later somewhat less than an identical reward received now, but doing so ①consistently across all time horizons. Empirical observation, however, reveals a different pattern: people apply a much ②steeper discount to the immediate future than to the distant future. When the reward or cost in question lies safely in the future, its emotional weight remains ③vivid, allowing rational long-term goals to dominate one's stated intentions. Once that same reward or cost draws near, however, its immediacy triggers a disproportionately strong emotional pull, frequently ④overriding the very plans made earlier with such apparent confidence. This dynamic helps explain chronic procrastination, since tasks that carry long-term benefits are perpetually ⑤deferred in favor of activities offering more immediate satisfaction.

When a resource is shared among many users, none of whom bears the full cost of its depletion, _______________. This dynamic, famously labeled the tragedy of the commons, describes how shared pastures and fisheries can be degraded even when every participant privately understands the danger of overuse. A single herder who adds one more animal to a communal pasture gains the entire benefit of that addition, whereas the resulting damage to the grass is shared among other herders who depend on the land. Because self-interest offers no incentive to restrain consumption unilaterally, the resource tends to be exhausted long before any user intends such an outcome. For decades, economists assumed that only two remedies existed: strict regulation or the conversion of shared resources into private property. Elinor Ostrom challenged this assumption, however, by documenting communities that had sustainably managed fisheries and forests for generations through locally devised rules and mutual monitoring rather than external control.

After an especially demanding training session, the instinct to collapse onto a couch and remain motionless is understandable, yet exercise physiologists increasingly recommend the opposite approach. Active recovery involves performing low-intensity movement, such as a light jog, an easy swim, or a gentle bike ride, on days following intense exertion rather than resting completely, since _______________. Some athletes worry that any movement at all will interfere with the repair process, but research suggests that truly light activity does not meaningfully slow healing and may even reduce the perceived soreness that follows a hard session.

Dear members of the Debate Club, I am writing to let you know that our regular meeting time has been changed. We usually meet in Room 304 every Wednesday after school, but _______________. Instead, our meeting will be held in the library on Thursday at the same time. Please bring the debate topic that you prepared last week, since we will practice our arguments together. If you cannot attend the new meeting time, please reply to this email by Tuesday evening. We also need two volunteers to arrange the chairs and tables before the meeting begins. Mr. Park, our club advisor, will join us this time to give feedback on our speaking skills. Thank you for your understanding, and I look forward to seeing everyone on Thursday.

Durkheim called this state of normlessness anomie, arguing that rapid social change can strip away the moral guidelines that regulate human desire, leaving individuals disoriented even when material conditions improve. When sociologist Émile Durkheim studied suicide rates across different societies, he noticed something puzzling: rates rose not only during economic depression but also during sudden prosperity. ( ① ) He concluded that both crises share a common feature, the collapse of shared norms that once told individuals what to expect and how to behave. ( ② ) Decades later, Robert Merton extended the concept to explain deviance within stable societies. ( ③ ) He proposed that anomie also arises when a culture insists that everyone pursue identical goals, such as wealth, while denying many people the legitimate means to achieve them. ( ④ ) Faced with this gap between aspiration and opportunity, some individuals conform, but others turn to innovation, ritual, retreat, or rebellion. ( ⑤ ) Anomie theory therefore suggests that crime is less a product of individual failure than of structural imbalance within society itself.

None of these explanations, in other words, has to be the whole story. For centuries, dreams have fascinated scientists and philosophers alike, yet no single theory fully explains why the sleeping brain generates such vivid and often bizarre experiences. ( ① ) One prominent idea suggests that dreaming helps the brain process emotional experiences, replaying difficult events in a safe, low-stakes environment so that their emotional intensity gradually fades. ( ② ) Another theory proposes that dreams serve a more practical function, allowing the brain to rehearse responses to threats without any real danger, a kind of nightly simulation that may have offered early humans a survival advantage. ( ③ ) Still other researchers argue that dreaming is simply a byproduct of the brain organizing memories, with vivid imagery arising as the mind sorts through the day's information rather than serving any independent purpose of its own. ( ④ ) Because these theories rest on indirect evidence rather than direct observation of subjective experience, none has been conclusively proven. ( ⑤ ) Many scientists now suspect that dreaming may serve several of these functions simultaneously rather than just one.

This is because the temperature inside a car can rise to a dangerous level within minutes. Summer heat can be just as dangerous for pets as it is for people. ( ① ) First, always provide plenty of fresh water, and change it several times a day to keep it cool. ( ② ) Second, avoid walking your dog during the hottest hours, since hot pavement can burn sensitive paws. ( ③ ) Make sure your pet has access to a shaded or air-conditioned area at all times. ( ④ ) If your pet seems unusually tired or refuses to move, contact a veterinarian right away. Most importantly, never leave a pet alone in a parked car, even for a few minutes. ( ⑤ ) Following these guidelines will help your pet stay safe this summer.