영어 모의고사 (자동 편성)

Aerobic exercise, such as jogging, swimming, or cycling at a steady pace, ①strengthens the heart by forcing it to pump larger volumes of blood with each beat. Over weeks of consistent training, the heart gradually enlarges and becomes more efficient, meaning it can deliver the same amount of oxygen to working muscles while ②beating fewer times per minute. This adaptation explains why trained athletes often have a much lower resting heart rate than sedentary individuals of the same age. Beyond the heart itself, aerobic activity encourages the body ③building new capillaries within muscle tissue, improving the delivery of oxygen and nutrients at a cellular level. Researchers have also found that regular aerobic exercise ④reduces inflammation throughout the body and improves the way cells respond to insulin. Because these benefits accumulate gradually rather than appearing overnight, most exercise physiologists recommend ⑤maintaining a consistent routine for at least several months before expecting dramatic improvements in endurance.

Retailers use a variety of techniques ①designed to encourage customers to make unplanned purchases. Online stores achieve a similar effect through countdown timers that ②create a false sense of urgency. Bright colors, cheerful music, and pleasant scents are also carefully chosen to put customers in a relaxed mood, ③making them less likely to think critically about their spending. Critics argue that these tactics ④exploits human psychology rather than genuinely informing consumers about a product's value. Shoppers who understand these strategies are better equipped ⑤to resist them.

Jiho had always assumed he would join a large corporation after graduation, just as his parents expected. During his final year of university, however, he joined a small student team ①building an app that connected local farmers directly with restaurants. What started as a class project gradually ②turned into something more serious, as several restaurants began placing regular orders through their prototype. Jiho and his teammates decided ③to delay job applications and instead spend a year developing the idea, despite warnings from relatives ④who considered the plan too risky. After nearly failing twice, the team secured a small investment that allowed them ⑤hire their first employee.

Scientists have identified certain gene variants that ①appear 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, ②influences 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 ③interpreting these findings as evidence that athletic greatness is simply inherited. Even athletes who carry every favorable variant identified so far still require years of disciplined training ④to translate that genetic potential into actual performance, and many elite competitors lack some of these supposedly advantageous variants altogether. Genetics may set a rough ceiling on an individual's ultimate potential, but where any particular athlete lands within that range ⑤depend overwhelmingly on training quality, nutrition, coaching, and sheer determination.

Artificial intelligence has begun to play a surprising role in creative industries ①once thought to be uniquely human. Programs can now compose music, generate paintings, and ②draft short stories within seconds. Some artists welcome this technology, ③used AI tools to explore new styles or overcome creative blocks that once took weeks to resolve. Others, however, argue that AI-generated art lacks the emotional depth ④that comes from genuine human experience. Therefore, artists who learn to work alongside AI, rather than compete against it, may find themselves ⑤with a distinct advantage.

When a price is crossed out and replaced with a lower number, consumers instinctively perceive the new price as a ①loss, even if the original price was rarely charged. Limited-time sales further ②intensify this effect, since a ticking clock encourages rushed decisions that leave little room for careful comparison. Retailers also use phrases such as "while supplies last" to suggest ③scarcity, even when inventory remains plentiful. Over time, frequent sales can actually train customers to wait for discounts rather than buy at full price, which can ④hurt long-term profits. Despite this risk, many companies continue relying on sales events because the short-term boost in customer traffic usually ⑤outweighs the potential downside.

Before making a purchase, most online shoppers now read reviews written by previous customers rather than relying solely on advertisements. These reviews, posted by people who have no financial connection to the seller, often seem more ①trustworthy than promotional claims. Research shows that products with a large number of positive reviews sell significantly ②more than those with few or no reviews at all. However, fake reviews written by paid writers or even automated programs have become a serious problem, ③undermining consumer trust. Platforms that fail to detect these fraudulent posts risk ④gaining credibility with their users, who expect authentic opinions when making decisions. Ultimately, the power of online reviews depends entirely on their perceived ⑤honesty.

Ambitious young athletes and the parents who support them sometimes assume 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 producing persistent exhaustion, declining performance despite continued hard work, and increased susceptibility to illness and injury. 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 mistake for ordinary moodiness. Recovery from full-blown overtraining syndrome can take months rather than days, which is why _______________.

Soojin started posting short cooking videos on her phone during her last year of high school, never imagining it could become a career. At first, only a handful of friends watched her clips, and she nearly quit after several months without noticeable growth. Still, she quickly learned that being a creator demanded constant work, since algorithms rewarded frequent uploads and audiences expected fresh content daily. Looking back, Soojin realizes that ___________.

As the metaverse develops, entirely new categories of professional work are emerging alongside it. (A) Virtual event planners, for instance, now organize concerts and conferences that take place entirely within digital platforms. (B) Some skepticism remains, since the technology has not yet attracted the enormous user base that early predictions promised. (C) Despite this uncertainty, major companies continue to invest heavily, betting that virtual spaces will eventually rival physical venues in importance.