영어 모의고사 (자동 편성)

Safety signs surround us so constantly, from a yellow diamond ①warns of a curve ahead to a red octagon commanding a full stop, that most people stop consciously reading them soon after learning to drive. This is precisely the outcome that sign designers hope ②to avoid, since a sign that requires careful thought to interpret in an emergency has already failed at its purpose. Colors and shapes are chosen deliberately rather than randomly: red almost universally ③signals danger or prohibition, yellow signals caution, and green marks safety. Symbols replace text wherever possible for the same reason, ④allowing a running figure or a flame icon to communicate instantly to someone who may not speak the local language. Ignoring a familiar sign because it has become part of the background remains one of the most common and ⑤preventable causes of accidents in public spaces.

Adaptive learning apps promise something no traditional classroom can easily offer: a lesson plan ①that adjusts itself to each individual student in real time. As a student answers practice questions, the app tracks which concepts are mastered and which remain shaky, then quietly ②reshuffles the next set of problems to target the weaker areas. Early studies suggest that this personalized pacing can help struggling students ③catch up faster than a one-size-fits-all worksheet ever could. However, critics caution that an app cannot replace the encouragement, humor, and flexibility a human teacher brings to a lesson, especially when a student ④frustrating rather than simply behind. There is also a subtler concern: students who grow used to instant, algorithm-generated feedback may struggle later with the slower, more ambiguous kind of feedback that real-world tasks and mentors typically ⑤provide.

On the first day of winter break, my friend Yuna and I sat in a cafe and talked about the new year ahead. Instead of ①making separate plans, we decided to write our goals together on one sheet of paper. Yuna wanted ②improving her English speaking, while I wanted to wake up earlier every morning. We agreed ③to text each other every night to report what we had done that day. Yuna, ④who noticed my short replies, called me instead of just texting. Because we supported each other through difficult moments, both of us ⑤successfully reached our goals by spring.

A smartwatch strapped to a runner's wrist can now do far more than simply count steps; it monitors heart rate variability, running form, and recovery time, then uses that data to suggest a training plan ①tailored to the individual rather than a generic weekly schedule. When the device detects signs of overtraining, such as an unusually high resting heart rate several mornings in a row, it may recommend a ②lighter workout or an extra rest day before fatigue turns into an actual injury. Amateur athletes often credit this kind of guidance with helping them train more ③consistently without pushing their bodies too hard. Sports scientists note an important caveat, however: a wrist-based sensor cannot fully capture the same physiological detail available in a professional lab, so its suggestions should be treated as an ④infallible medical judgment rather than a helpful guideline, particularly for anyone ⑤managing a chronic health condition.

Child safety experts now argue that this advice is too ①complex to be useful, since most children will inevitably need to interact with unfamiliar adults, whether asking a store employee for help or greeting a new neighbor. A more effective approach focuses on ②specific situations rather than people in general, teaching children to recognize behavior that feels wrong. Role-playing these scenarios in advance helps children ③respond quickly under pressure, rather than freezing because the situation feels unfamiliar and confusing. Experts also emphasize that children should be taught they will never get in trouble for refusing an adult's request or for ④loudly saying no in public, since hesitation caused by politeness can cost ⑤precious seconds in a genuine emergency.

Scientists have identified certain gene variants that appear ①less 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 ②shapes whether a body leans toward endurance or explosive power. However, researchers caution strongly against interpreting these findings as evidence that athletic greatness is simply ③inherited. Even athletes who carry every favorable variant identified so far still require years of ④disciplined training to translate that genetic potential into actual performance. 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 ⑤determination.

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.

This malfunction, harmless as it sounds, reveals something troubling: memory and psychological continuity alone cannot fully settle what personal identity actually requires. Imagine a teleportation device that scans every atom in your body, transmits that information to a distant station, and reconstructs an exact physical duplicate there, while destroying the original body in the process. ( ① ) From the traveler's point of view, stepping into the machine and stepping out on the other side would feel utterly seamless, complete with continuous memories and a sense of having simply walked through a door. ( ② ) Philosophers, however, are troubled by a version of the same device that malfunctions. ( ③ ) Instead of destroying the original, it leaves the original body intact while still creating a perfect duplicate elsewhere. ( ④ ) Now two people exist, each with identical memories and an equally strong claim to being the original traveler, and there is no principled way to say which one is the real continuation of the person who entered the machine. ( ⑤ )

Its influence, in fact, can persist quietly long after any feeling of alertness has faded. Caffeine is the most widely consumed stimulant in the world, prized for its ability to sharpen focus and fight off fatigue within minutes of consumption. ( ① ) It works by blocking adenosine, a chemical that gradually builds up in the brain throughout the day and makes us feel increasingly sleepy the longer we stay awake. ( ② ) By occupying the receptors that adenosine would normally bind to, caffeine tricks the brain into feeling alert even when the body has accumulated significant sleep pressure. ( ③ ) 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 consumed in the late afternoon may still be interfering with the ability to fall asleep at midnight. ( ④ ) Even when people do not consciously notice difficulty falling asleep, caffeine has been shown to reduce the amount of deep, restorative sleep obtained later in the night. ( ⑤ ) For this reason, many sleep specialists advise avoiding caffeine after early afternoon.

That small imperfection, more than anything, was proof of how much I had actually learned that day. For my birthday, my older sister took me to a small pottery studio where visitors can shape their own bowl or cup on a spinning wheel. ( ① ) I expected the wheel to do most of the difficult work automatically, since it was already spinning quickly by the time I sat down. ( ② ) My first attempt collapsed into a shapeless lump within seconds, because I had not realized how much steady, centered pressure the clay actually requires before it can be shaped at all. ( ③ ) The instructor explained that beginners almost always press too hard on one side, which throws the entire piece off balance no matter how fast or slow the wheel spins. ( ④ ) After nearly a dozen failed attempts, I finally produced a lopsided but recognizable cup, and the small imperfection along its rim somehow made me prouder of it than a perfectly smooth, machine-made mug ever could have. ( ⑤ ) Clay, I learned that afternoon, rewards patience far more generously than it rewards force.