영어 모의고사 (자동 편성)

Caffeine is the most widely consumed stimulant in the world, ① prizing for its ability to sharpen focus and fight off fatigue within minutes of consumption. It works by blocking adenosine, a chemical that gradually builds up in the brain throughout the day and ② makes us feel increasingly sleepy the longer we stay awake. By occupying the receptors that adenosine would normally bind to, caffeine tricks the brain into ③ feeling alert even when the body has accumulated significant sleep pressure. The effects, however, last far longer than most people realize. Because caffeine can remain active in the bloodstream for five to six hours, a cup of coffee ④ consumed in the late afternoon may still be interfering with the ability to fall asleep at midnight. Even when people do not consciously notice difficulty falling asleep, caffeine has been shown ⑤ to reduce the amount of deep, restorative sleep obtained later in the night.

Ambitious young athletes and the parents who support them sometimes ① assumes that more training automatically produces better results, a belief that occasionally leads to a condition known as overtraining syndrome. Unlike ordinary fatigue that resolves after a few days of rest, overtraining syndrome develops gradually over weeks or months of insufficient recovery relative to training load, eventually ② producing persistent exhaustion, declining performance despite continued hard work, and increased susceptibility to illness and injury. Adolescents may be especially vulnerable, since their bodies are simultaneously ③ coping with the physical demands of growth and the added stress of intensive training schedules. Warning signs are often subtle at first, including disrupted sleep, irritability, and a loss of enthusiasm for a sport the athlete once genuinely enjoyed, which adults often ④ mistake for ordinary moodiness. Recovery from full-blown overtraining syndrome can take months rather than days, which is why sports medicine specialists now emphasize ⑤ monitoring early warning signs and scheduling rest before symptoms worsen.

In the days leading up to an endurance event, many athletes deliberately ① increase their carbohydrate intake while reducing training volume, a practice known as carbohydrate loading. The strategy is designed to ② maximize the amount of glycogen, the storage form of carbohydrate, packed into muscle tissue before competition begins. Sports nutritionists caution, however, that the timing and composition of meals matter as much as the total quantity of carbohydrate consumed, since eating ③ familiar foods immediately before competition can cause digestive discomfort. Athletes are therefore advised to ④ practice their nutrition strategy during training rather than experimenting with it for the first time on race day. Beyond carbohydrates, adequate protein and micronutrient intake throughout the training cycle remains ⑤ essential, since fueling strategy is only one part of a much larger nutritional picture.

During sleep, the brain does not simply rest; it actively reorganizes the day's experiences into lasting memories through a process called consolidation. Newly formed memories are initially ① fragile and stored primarily in a brain region called the hippocampus, which has ② unlimited long-term capacity. While a person sleeps, particularly during the deep stages of non-REM sleep, neural activity replays these fresh memory traces in rapid, compressed sequences, gradually transferring the information to the cortex for more ③ durable, long-term storage. This replay strengthens the connections between neurons that encoded the original experience, making the memory more ④ resistant to interference from unrelated events the following day. Sleep researchers have demonstrated this effect experimentally: participants who slept after learning a list of word pairs recalled more items the next day than participants who remained awake instead. Crucially, the benefit was not limited to simple recall; sleep also seemed to help participants ⑤ extract general patterns from the material, suggesting that consolidation involves more than passive storage.

As millions of people now earn income through delivery apps and ride-hailing platforms, questions about their legal status have become increasingly ①urgent. Most platform workers are classified as independent contractors rather than employees, which means they lack access to minimum wage guarantees, paid sick leave, and unemployment insurance. Companies ②oppose this arrangement because it allows them to avoid the costs associated with hiring full employees. Worker advocates argue that many platform workers ③depend on these jobs as their primary source of income, much like traditional employees do. Several countries have recently begun ④reconsidering their labor laws, proposing new categories that would grant platform workers some employee-like protections. Supporters of these reforms believe fair treatment and flexibility can ⑤coexist within the same system.

Jina used to fill her apartment with items she rarely used, believing that owning more things would make her ①happier. After moving twice within a single year, she grew ②energized from packing boxes filled with clothes she had never worn and gadgets she had forgotten she owned. Gradually, however, she noticed that her small apartment felt ③calmer and easier to manage. She also realized that she spent significantly ④less money once she stopped buying things impulsively to fill emotional gaps. Jina's story reflects a broader trend among young adults who increasingly value experiences and simplicity over ⑤accumulating possessions.

Scientists have identified certain gene variants that appear more frequently among elite endurance athletes than among the general population, along with a separate set that seems to favor explosive, power-based sports such as sprinting. One frequently studied variant, for instance, influences the proportion of slow-twitch versus fast-twitch muscle fibers a person naturally develops, a ratio that shapes whether a body leans toward endurance or explosive power. However, researchers caution strongly against interpreting these findings as evidence that athletic greatness is simply inherited, since _______________. Genetics may set a rough ceiling on an individual's ultimate potential, but where any particular athlete lands within that range depends overwhelmingly on training quality, nutrition, coaching, and sheer determination.

Many self-help books emphasize the cue-routine-reward loop as a tool for building better habits. (A) For example, athletes who want to build a stretching habit often rely on a specific cue, such as arriving at the gym, to trigger the same short routine every time. (B) Over time, this consistent pairing strengthens the neural pathway connecting the cue to the routine, making the behavior feel almost automatic. (C) According to this model, every habit consists of three connected parts: a cue that triggers behavior, a routine that follows, and a reward that reinforces it.

Colors carry different psychological associations that marketers use strategically when designing logos. (A) Red, for example, often appears in logos related to food and sales, since it tends to stimulate energy and urgency. (B) Blue, on the other hand, frequently appears in logos for banks and technology companies because it suggests trust and stability. (C) These associations, however, are not universal, since the same color can carry very different meanings across cultures.

주어진 문장: This process cannot happen overnight, since each stage depends on the completion of the one before it. Carbon neutrality refers to a state in which the amount of greenhouse gases a country or company releases into the atmosphere is balanced by the amount it removes, resulting in zero net emissions. ( ① ) Achieving this goal typically requires several sequential stages rather than a single sudden action. ( ② ) First, organizations attempt to reduce emissions directly by replacing fossil fuels with renewable energy sources such as solar or wind power. Next, they improve efficiency throughout their operations, minimizing the energy wasted during production and transportation. ( ③ ) Only after these direct measures have been maximized do most organizations turn to offsetting, which involves funding projects like reforestation or carbon capture to compensate for emissions that cannot yet be eliminated. ( ④ ) Critics argue, however, that some companies exploit offsetting too early, using it to avoid making genuine reductions. ( ⑤ ) Therefore, experts insist that a credible roadmap must always prioritize actual emission cuts before relying on compensation.