영어 모의고사 (자동 편성)

When the body fights off an infection, the immune system relies heavily on adequate sleep to function ①effectively. During deep sleep, the body produces and releases cytokines, proteins that help ②regulate immune responses and coordinate the fight against harmful invaders. People who consistently sleep fewer than six hours a night show measurably ③weaker antibody responses after vaccination compared with those who sleep seven or eight hours. Chronic sleep deprivation also appears to ④reduce low-grade inflammation throughout the body, a state that has been linked to a higher risk of heart disease. Rather than being a passive state, sleep functions as an active period during which the immune system repairs itself and ⑤prepares for future threats.

Every cell in the human body follows an internal timer known as the circadian rhythm, a roughly twenty-four-hour cycle that ①governs when we feel alert and when we feel drowsy. This clock is regulated primarily by a tiny cluster of neurons in the brain that responds to light entering through the eyes. When morning sunlight strikes the retina, the cluster signals the body to ②suppress sleep hormones and raise body temperature, preparing us for activity. As evening approaches and light fades, the same mechanism triggers the release of melatonin, a hormone that ③promotes drowsiness. Because this rhythm evolved around the natural cycle of day and night, modern habits such as staying indoors under artificial light or working night shifts can push the internal clock ④out of sync with the external environment. Such misalignment does not simply cause tiredness; it has also been associated with digestive problems and ⑤heightened concentration, suggesting that timing matters as much as total sleep hours.

Many companies now advertise themselves as environmentally responsible, yet a growing number of these claims turn out to be ①misleading. This practice, known as greenwashing, occurs when a business spends more effort marketing its products as eco-friendly than actually reducing environmental harm. A company might launch a recycled-packaging line while continuing to pollute rivers through its main factories, creating a false impression of genuine change. Such tactics ②deceive well-intentioned consumers who wish to shop responsibly but lack the tools to ③verify corporate claims. In contrast, truly sustainable businesses publish detailed, independently verified data about their emissions and supply chains, allowing outsiders to check their progress. Therefore, shoppers should look beyond vague labels like green or natural and instead search for ④recognized certifications, transparent reports, and measurable targets. Without such scrutiny, greenwashing will keep ⑤declining, undermining public trust and slowing the broader shift toward an economy that truly protects the planet.

Daniel's career reflects how much the space industry has changed since he was a child. (A) As a result, he came to believe that opportunities in space exploration were no longer limited to a small number of government scientists. (B) By the time he entered university, private companies had begun launching satellites and building reusable rockets. (C) This shift eventually led him to join a startup developing lunar landing equipment, a job that barely existed when he first imagined his future.

Greenwashing has become a common strategy among companies eager to appear environmentally responsible. (A) For example, a company might use a green logo or the word "eco" without changing its actual production methods at all. (B) In contrast, genuine sustainability requires real changes, such as reducing waste or using renewable energy sources. (C) Often, this involves marketing language that suggests care for the planet while offering little real evidence.

For years, a small riverside village had suffered from flooding that grew worse with each passing summer. (A) In addition, several families whose houses stood in the most vulnerable areas relocated to higher ground, and the village installed an early warning system that sent alerts to residents' phones whenever river levels rose dangerously fast. (B) When a powerful storm struck three years later, the new measures proved effective, and the village suffered only minor damage instead of the devastating losses it had previously faced, becoming a model for neighboring communities. (C) Frustrated residents eventually decided to pursue climate adaptation, adjusting their infrastructure and habits to reduce the damage caused by increasingly unpredictable weather, and engineers began by widening the drainage canals surrounding the village so that excess rainwater could flow away more efficiently.

Mina's career path illustrates how unpredictable the job market can be for graduates entering emerging fields. (A) Soon afterward, however, a small startup building a traffic-prediction app offered her a chance to analyze large sets of data. (B) At first, she struggled to find a position that matched her academic background, since few employers understood the value of her statistical skills. (C) That opportunity transformed her career, leading her eventually to lead a team of analysts mentoring the next generation.

As climate change accelerates, investors around the world are paying closer attention to how companies affect the environment and society. (A) Recently, however, many corporations have learned to boost their ESG scores without genuinely transforming their operations. Some firms publish glossy reports filled with impressive statistics while their actual carbon emissions barely decline, exploiting the fact that ESG evaluation systems still lack consistent global standards. (B) ESG management refers to a company's efforts to consider Environmental, Social, and Governance factors alongside profit when making business decisions. Investors increasingly rely on ESG ratings to judge whether a company is managed responsibly and sustainably over the long term. (C) This gap between appearance and substance has led critics to demand stricter, more transparent criteria for measuring corporate responsibility. Genuine ESG management, in contrast, requires measurable targets, independent audits, and long-term accountability rather than one-time donations or attractive slogans. Investors who wish to identify truly responsible companies should therefore examine detailed disclosures instead of trusting labels alone.

The tool draws on enormous amounts of data, including flight prices, seasonal weather patterns, and reviews left by previous travelers, to suggest a route that avoids obvious scheduling conflicts. Planning a multi-city trip once meant hours spent comparing flight schedules, reading hotel reviews, and mapping out which sights were close enough to visit in a single day. ( ① ) AI travel planners now compress much of that work into a short conversation, asking about a budget, a travel style, and a handful of preferences before generating a full day-by-day itinerary within minutes. ( ② ) Many travelers appreciate having a solid starting point rather than a blank page. ( ③ ) Still, seasoned travelers warn that these itineraries can feel oddly generic. ( ④ ) They often steer users toward the same popular landmarks that every other AI-generated plan recommends, while overlooking smaller, lesser-known places that a knowledgeable local guide might have suggested instead. ( ⑤ )

주어진 문장: Not every transaction goes smoothly, however, since photographs and descriptions cannot always capture an item's true condition. Secondhand trading platforms, once considered a niche market for used goods, have grown into a mainstream part of consumer culture. ( ① ) Rising prices for new products, combined with growing awareness of environmental waste, have encouraged many shoppers to consider used items before purchasing something brand new. ( ② ) These platforms allow individuals to sell clothing, electronics, and furniture directly to other consumers, cutting out traditional retail markups entirely. ( ③ ) For younger buyers especially, purchasing secondhand items has become associated with resourcefulness rather than financial necessity. ( ④ ) Sellers benefit as well, earning extra income from items that would otherwise sit unused in storage. ( ⑤ ) To address this problem, many platforms now offer buyer protection programs and detailed rating systems for sellers.