영어 모의고사 (자동 편성)

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.

A smart thermostat that learns a family's daily rhythm can lower the temperature automatically before everyone wakes up cold, while smart lights ①that follow a resident's schedule no longer need to be switched on and off by hand. These small conveniences rest on a shared foundation: sensors collect data about temperature, motion, and light throughout the home, and an algorithm gradually learns ②which settings match each household's actual habits rather than a factory default. Over months of use, the system becomes noticeably better at ③anticipate needs, often adjusting settings moments before a resident would have reached for a switch. Yet convenience comes with a trade-off that many households ④overlook. Every one of these small adjustments depends on constant data collection, meaning that a detailed record of when people wake, leave, and return home is quietly ⑤being stored somewhere beyond their immediate control.

Behavioral economists use the term temporal discounting to describe how people ①undervalue future rewards simply because those rewards are not immediate. This tendency explains why a student might choose to watch videos tonight rather than study for an exam that remains several weeks away, even though studying offers a ②smaller long-term benefit. A distant reward, no matter how valuable, feels psychologically smaller than a small reward available right now. This bias contributes to procrastination, since future consequences rarely feel ③urgent enough to motivate immediate action. To counter this tendency, students should ④convert distant goals into smaller, near-term milestones that feel more emotionally real. Setting weekly checkpoints rather than a final deadline can make future benefits feel ⑤closer and more concrete.

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.

An echo chamber refers to an online environment where people are mainly exposed to opinions that already match their own beliefs. This phenomenon occurs because social media algorithms tend to recommend content similar to what users have previously liked or shared, gradually narrowing the range of perspectives they encounter. As a result, individuals inside an echo chamber rarely engage with viewpoints that challenge their existing assumptions, which allows their original beliefs to grow increasingly extreme over time. For example, someone who frequently reads articles supporting one political party may begin to see the opposing party as entirely unreasonable, having never seriously considered its arguments. Political polarization, a significant issue in many countries today, is often linked to this pattern of selective exposure. Breaking out of an echo chamber requires ___________.

Self-driving technology is advancing rapidly, and its impact on the transportation industry is becoming increasingly visible. Companies are testing autonomous trucks that can travel long distances without human drivers, potentially transforming how goods move across countries. Supporters argue that this technology could ___________, since computers do not need rest and can react faster than humans in emergencies.

Choice architecture refers to how decisions are designed. It determines which option is automatically selected unless a person chooses otherwise, known as the default option. Research consistently shows that ___________, even when changing it takes only seconds. Organ donation is a well-known example. Countries where citizens are automatically registered as donors unless they opt out show much higher donation rates than opt-in countries. Retirement savings programs show a similar pattern, since employees automatically enrolled in a pension plan rarely cancel it. Voluntary sign-ups, in contrast, often delay indefinitely. Critics argue that default options can be manipulated to benefit companies rather than individuals, so transparency about how defaults are chosen becomes essential. Still, supporters insist that because some default must always exist, it should support people's own long-term interests rather than mere institutional convenience.

In short, an effective fueling plan treats carbohydrate loading as one tool among many, not a substitute for well-rounded nutrition. In the days leading up to an endurance event, many athletes deliberately increase their carbohydrate intake while reducing training volume, a practice known as carbohydrate loading. ( ① ) The strategy is designed to maximize the amount of glycogen, the storage form of carbohydrate, packed into muscle tissue before competition begins. ( ② ) Because glycogen serves as the primary fuel source during prolonged, intense exercise, entering an event with fuller stores can delay the point of exhaustion that runners often call hitting the wall. ( ③ ) Sports nutritionists caution, however, that the timing and composition of meals matter as much as the total quantity of carbohydrate consumed, since eating unfamiliar foods immediately before competition can cause digestive discomfort. Athletes are therefore advised to practice their nutrition strategy during training rather than experimenting with it for the first time on race day. ( ④ ) Beyond carbohydrates, adequate protein and micronutrient intake throughout the training cycle remains essential, since fueling strategy is only one part of a much larger nutritional picture. ( ⑤ )

주어진 문장: Back then, few people could have predicted that such a job would even exist. When Mina graduated from college five years ago, she had never even heard the term "data scientist." ( ① ) She had studied statistics simply because she enjoyed solving puzzles with numbers. ( ② ) Everything changed when a small tech startup, which was building an app to predict traffic patterns, hired her to analyze massive amounts of data. ( ③ ) Mina quickly discovered that she loved turning raw numbers into insights that helped real people make better decisions. ( ④ ) Within two years, demand for professionals like her had exploded, as companies in every industry realized how valuable data could be. ( ⑤ ) Today, Mina leads a team of ten analysts, mentoring young graduates.

주어진 문장: This ability to anticipate desires so precisely raises an uncomfortable question about how much companies truly know about us. Modern advertising increasingly relies on personal data collected from users' browsing habits, search histories, and social media activity. ( ① ) Companies argue that this approach benefits consumers by showing advertisements that are more relevant to their actual interests rather than random, generic promotions. ( ② ) However, many critics contend that this level of tracking raises serious concerns about privacy, since users rarely understand how extensively their behavior is being monitored. ( ③ ) Some algorithms can predict purchasing decisions before consumers themselves are consciously aware of them. ( ④ ) Furthermore, personalized advertising can trap users in a narrow bubble, repeatedly showing them similar products and limiting their exposure to alternatives. ( ⑤ ) Given these competing concerns, policymakers must strike a careful balance between allowing innovation and protecting individual privacy rights.