영어 모의고사 (자동 편성)

Every day, email providers quietly block billions of unwanted messages before they ever reach a user's inbox, a task that ①would be impossible without an AI filtering system running constantly in the background. The filter examines each incoming message for suspicious patterns, including certain keywords, unusual sender addresses, and formatting tricks that scammers commonly rely on ②to slip past detection. What makes the system effective is that it keeps ③learning after launch: whenever a user marks a message as spam or rescues a message mistakenly filtered out, that action ④become new training data, sharpening the filter's future decisions. This creates a constant back-and-forth, since spammers study which messages get blocked and then adjust their wording to slip through again, ⑤resulting in an ongoing contest between each side.

Modern factories increasingly rely on collaborative robots, often called cobots, ①which are designed to work safely alongside human employees. Unlike traditional industrial robots that operate behind safety cages, cobots use sensors ②detect nearby workers and adjust their movements accordingly. In practice, cobots typically handle repetitive or physically demanding tasks, such as ③lifting heavy parts, while human workers focus on tasks that require judgment. This division of labor increases overall efficiency, since each side ④contributes what it does best. Manufacturers who have introduced cobots report fewer workplace injuries, largely because employees no longer ⑤perform exhausting repetitive motions all day.

Minji had tried for years to build a bedtime reading habit but always ①forgot once under the blanket. During summer, she found a method called habit stacking. It means attaching a new habit to an existing one so it acts as a reminder. Her existing habit was brushing her teeth every night, so she decided to place her book ②far from her toothbrush. After brushing her teeth, she would pick up the book, letting one action trigger the next. Within two weeks, opening the book after brushing felt almost ③automatic, requiring no conscious effort. She realized habit stacking worked best when the new habit was ④small and the existing habit was stable and predictable. By the end of summer, both habits felt like ⑤steady parts of her routine, requiring no reminders.

Exercise does far more than strengthen muscles and the heart; it also produces ①measurable changes within the brain itself. During sustained physical activity, the body releases a protein called brain-derived neurotrophic factor, which supports the growth of new neurons and ②strengthens connections between existing ones, particularly in regions associated with memory and learning. Studies comparing physically active students to sedentary peers have repeatedly found that the active group performs ③better on tests of attention and problem-solving, even when the exercise session ends well before the test begins. Researchers believe that exercise increases blood flow to the brain, delivering oxygen and nutrients more efficiently, while also ④raising levels of stress hormones that can interfere with clear thinking. Interestingly, aerobic activities such as running or swimming appear to produce more ⑤pronounced cognitive benefits than purely strength-based training.

Modern sports wearables, from wrist-worn fitness trackers to smart insoles embedded in running shoes, continuously collect data that would once have required a laboratory to measure. Heart rate, sleep quality, running cadence, and even subtle changes in gait can now be ①monitored during ordinary daily activity rather than only in a controlled clinical setting. Coaches use this constant stream of information to detect early warning signs of overtraining, sometimes noticing a decline in performance ②after the athlete consciously feels tired. However, the flood of data has created a new challenge: distinguishing a meaningful pattern from ordinary daily fluctuation requires expertise that many amateur athletes simply ③do not have. Some researchers worry that casual users may misinterpret a single unusual reading as a serious problem, leading to ④needless anxiety rather than useful insight. For this reason, most experts recommend treating wearable data as a general trend to observe over time, not as a precise ⑤diagnostic tool.

A short nap taken in the early afternoon, often called a power nap, can noticeably sharpen attention and mood without leaving a person groggy afterward. The key lies in timing: naps limited to roughly twenty minutes allow the brain to pass through the lightest stages of sleep while avoiding the deeper stages associated with slow-wave activity. If a nap extends much beyond that window, _______________. Laboratory studies comparing napping and non-napping groups have repeatedly shown that a brief nap improves reaction time and short-term memory almost as effectively as a full night of extra rest. Interestingly, the benefit appears strongest when the nap occurs several hours after waking, since this is when the body's natural dip in alertness makes rest most effective. For this reason, many workplaces now designate quiet rooms where employees can recharge briefly during the day.

Many companies today advertise their products as environmentally friendly, yet not all of these claims are accurate. This practice, known as greenwashing, involves exaggerating or fabricating a product's positive impact on the environment. Some brands print vague terms such as "natural" or "eco-conscious" on packaging without providing any evidence to support these labels. Consumers, who are increasingly concerned about climate change, often trust such claims without questioning them closely. As a result, they may pay higher prices for products that are no more sustainable than ordinary alternatives. Genuine environmental efforts, which usually require significant investment and long-term planning, are far more costly than simply changing a label. Therefore, governments should establish clear standards that require companies to ___________.

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. The strategy is designed to maximize the amount of glycogen, the storage form of carbohydrate, packed into muscle tissue before competition begins. Because glycogen serves as the primary fuel source during prolonged, intense exercise, _______________. 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.

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.

주어진 문장: This hesitation can appear even in group settings, where a single cautious voice may delay a decision for everyone. Behavioral economists use the term status quo bias to describe a tendency to prefer the present situation over a new alternative, even when the alternative would bring greater benefits. ( ① ) This bias helps explain why many households hesitate to switch to renewable energy, such as installing solar panels on their roofs. ( ② ) Although solar panels can lower electricity bills over time, homeowners often stick with their current power source because it feels safe and requires no immediate effort. ( ③ ) In contrast, switching demands research, upfront cost, and trust in unfamiliar technology, all of which can seem risky compared with doing nothing. ( ④ ) For example, a neighborhood association might repeatedly postpone a vote on shared solar panels, not because the plan is flawed, but because members are reluctant to leave their routine. ( ⑤ ) Therefore, boosting renewable adoption may depend less on proving its advantages and more on designing programs that make the first step feel easy.