영어 모의고사 (자동 편성)

A growing number of people are practicing what is now called digital detox, the deliberate decision to stop using smartphones for a set period. Rather than checking notifications every few minutes, participants unplug for a weekend, a week, or sometimes even longer. Numerous studies suggest that this temporary withdrawal produces ①real benefits for both the mind and the body. First, attention spans fragmented by constant notifications gradually ②recover, allowing people to concentrate on single tasks for longer stretches. Second, avoiding screens before bedtime ③worsens sleep quality, since blue light emitted by devices is known to disrupt natural sleep cycles. Third, people freed from their phones often rediscover the pleasure of face-to-face conversations that had been replaced by texting. Critics argue that complete disconnection is impractical in a hyperconnected society, yet even brief, regular breaks appear to ④restore balance. Therefore, scheduling periodic digital detox sessions deserves ⑤serious consideration.

VO2 max, defined as the maximum volume of oxygen a person's body can consume and use during intense exercise, is widely regarded as one of the best single indicators of cardiorespiratory fitness. Elite endurance athletes typically post VO2 max values far higher than those of untrained individuals. While genetics accounts for a substantial portion of an individual's potential VO2 max, consistent aerobic training can still raise the measurement considerably over months of dedicated effort. It is worth noting, however, that a high VO2 max does not guarantee success in competition, since _______________.

Skipping a proper warm-up before intense exercise might seem like a harmless way to save a few minutes, but the practice carries real physiological costs, since a cold muscle is stiffer and less elastic than a warm one. Gradually raising body temperature through light activity increases blood flow to the muscles and speeds up nerve signals between the brain and the muscle fibers. A proper warm-up also raises heart rate gradually, easing the cardiovascular system into strenuous work. As a result, _______________. For this reason, coaches treat warm-up routines not as optional preparation but as an essential part of training itself.

Every day, email providers quietly block billions of unwanted messages before they ever reach a user's inbox, a task that would be impossible without an AI filtering system running constantly in the background. (A) This creates a constant back-and-forth, since spammers study which messages get blocked and then adjust their wording to slip through again. (B) The filter examines each incoming message for suspicious patterns, including certain keywords, unusual sender addresses, and formatting tricks that scammers commonly rely on to slip past detection. (C) What makes the system effective is that it keeps learning after launch, since a user's action of marking or rescuing a message becomes new training data.

Athletes preparing for major endurance events sometimes train for weeks at high altitude, where the air contains less oxygen than at sea level, in hopes of gaining a physiological edge once they return to compete at lower elevations. (A) Many elite programs therefore follow a strategy known as live high, train low, balancing the benefits of altitude exposure against the need for high-quality workouts. (B) In this thin air, the body responds by producing more red blood cells, which carry oxygen more efficiently through the bloodstream to working muscles. (C) However, the benefits of altitude training are far from guaranteed, since individual athletes respond quite differently to the same conditions, and some experience excessive fatigue that undermines the very training they hoped to complete.

Aerobic exercise, such as jogging, swimming, or cycling at a steady pace, produces a wide range of benefits that extend well beyond simple calorie burning. (A) This adaptation explains why trained athletes often have a much lower resting heart rate than sedentary individuals of the same age. (B) Over weeks of consistent training, the heart gradually enlarges and becomes more efficient, delivering the same amount of oxygen to working muscles while beating fewer times per minute. (C) Most fundamentally, it strengthens the heart itself, forcing it to pump larger volumes of blood with each beat.

The rapid rise of the gig economy has led researchers to examine both its opportunities and its risks. (A) In addition, because their income depends heavily on the number of tasks completed, many gig workers find it difficult to save money consistently. (B) On the positive side, gig platforms allow workers to set their own schedules and take on projects that match their skills. (C) Yet this freedom comes at a price, since most gig workers are not entitled to employer-provided benefits like health insurance.

Genetic potential, in other words, is merely a starting point, never a finished product. 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. ( ① ) 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. ( ② ) However, researchers caution strongly against interpreting these findings as evidence that athletic greatness is simply inherited. ( ③ ) Even athletes who carry every favorable variant identified so far still require years of disciplined training to translate that genetic potential into actual performance, and many elite competitors lack some of these supposedly advantageous variants altogether. ( ④ ) 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. ( ⑤ )

Skipping this final stage, even when an athlete feels fully recovered, dramatically increases the risk of re-injury, because general strength does not automatically translate into the specific coordination that a particular sport demands. Recovering from a serious sports injury involves far more than simply waiting for torn tissue to heal; it requires a carefully structured program that gradually reintroduces stress to the affected area. ( ① ) Immediately after an injury, rest and gentle range-of-motion exercises help prevent stiffness without disturbing the healing tissue. ( ② ) As pain subsides, therapists introduce light resistance training, slowly rebuilding strength in muscles that have weakened from disuse. ( ③ ) Progressing too quickly at this stage is a common mistake, since tissue that appears healed on the surface may still be structurally fragile beneath it. ( ④ ) Only after strength and flexibility approach pre-injury levels do specialists introduce sport-specific drills that mimic the exact movements an athlete will face in competition. ( ⑤ )

주어진 문장: In reality, however, that "original" price was sometimes never actually charged to any customer. Retailers frequently rely on sales events to boost short-term revenue, but the psychology behind these promotions is more complex than simple discounting. ( ① ) When a price is crossed out and replaced with a lower number, consumers instinctively perceive the new price as a bargain. ( ② ) This technique, known as anchoring, shapes how shoppers judge value by comparing prices rather than evaluating a product on its own merits. ( ③ ) Limited-time sales further intensify this effect, since a ticking clock encourages rushed decisions that leave little room for careful comparison. ( ④ ) Retailers also use phrases such as "while supplies last" to suggest scarcity, even when inventory remains plentiful. ( ⑤ ) Over time, frequent sales can actually train customers to wait for discounts rather than buy at full price.