영어 모의고사 (자동 편성)

Air conditioners make summer days more comfortable, but ①using them incorrectly can harm your health. Doctors recommend keeping the difference between indoor and outdoor temperatures within five or six degrees, ②which helps your body adjust more easily. A larger gap forces your body ③to adjust constantly, which can weaken your immune system. This sudden change often ④lead to symptoms such as headaches and fatigue. It is also helpful ⑤to open a window for a few minutes every hour.

When someone's heart suddenly stops beating, the brain begins ① to suffer damage within minutes unless blood keeps circulating, which is why the actions taken by an ordinary bystander before paramedics arrive can matter as much as the treatment given at the hospital. Studies show that a person who ② receives CPR immediately from someone nearby is far more likely to survive than one who waits for professional help to arrive. Despite this, many people hesitate to start chest compressions, ③ worried that they might break a rib or make the situation worse. Medical instructors respond to this fear: a cracked rib heals, but a brain ④ depriving of oxygen for too long does not. Modern CPR training has also been simplified, focusing on firm, rhythmic chest compressions rather than the more complicated combination of breaths and compressions once required, ⑤ making the skill easier for ordinary students to learn and remember under pressure.

Science labs feel far safer than they actually are, largely because the equipment looks harmless and the experiments are carefully ① planned by a teacher. This false sense of security leads some students ② to skip small precautions, such as wearing safety goggles for a "simple" experiment or tasting a substance out of curiosity. Chemical reactions, however, do not distinguish between a professional laboratory and a classroom; a small amount of the wrong substance ③ splashed into an eye can cause permanent damage within seconds, regardless of how basic the experiment seemed. Teachers repeatedly emphasize ④ to read each instruction before touching any material, since even a familiar-looking chemical can behave unpredictably when combined with something new. Most laboratory accidents, researchers note, do not happen during advanced or unusual experiments but during routine ones that students ⑤ have performed many times before.

Child safety experts now argue that this advice is too ① complex 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 ② specific situations rather than people in general, teaching children to recognize behavior that feels wrong. Role-playing these scenarios in advance helps children ③ respond 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 ④ loudly saying no in public, since hesitation caused by politeness can cost ⑤ precious seconds in a genuine emergency.

Every spring, our school holds an art exhibition in the main hallway, and this year I finally submitted a painting of my own. For weeks, I compared my work to my classmates' drawings and felt ① sure that mine was not good enough to hang beside theirs. My art teacher noticed my ② hesitation and said something I did not expect: an exhibition is not a contest to find the single best picture, but a chance to show how differently people see the same world. On the morning the paintings went up, I walked past dozens of styles, from careful realistic portraits to ③ boring, colorful abstractions, and none of them looked like mine. Instead of feeling embarrassed, I found myself ④ curious about why each artist had made certain choices. Standing in that crowded hallway, I finally understood that the exhibition's real purpose was not to rank the paintings, but to let students discover how many different perspectives could exist in a single ⑤ shared space.

When temperatures drop below freezing overnight, an invisible layer of black ice can form on sidewalks that look perfectly dry, catching even careful walkers off guard. Unlike a visibly icy patch, black ice reflects almost no light and blends into ordinary pavement, which is why _______________. Orthopedic doctors report a sharp rise in wrist and hip injuries every winter, most of them caused not by dramatic slips on icy hills but by a single unexpected step near a bus stop or a doorway.

The Hopeful Start Workshop will be held on January 10th at the Green Hill Community Center. This event is designed to _______________. The workshop will run from two to four in the afternoon, and participants will learn simple methods for writing goals that are specific and easy to measure. The workshop is open to all middle and high school students, and no experience is required. Registration is free, but seats are limited to thirty people, so early sign-up is recommended.

Physical education class often feels like the one period of the day when students can finally move freely, which sometimes leads them to skip the warm-up routine that teachers insist on before any real activity begins. (A) Beyond warming up, wearing proper footwear matters more than most students realize; running in worn-out sneakers with little grip left on the sole significantly raises the chance of a twisted ankle. (B) Coaches often compare an unwarmed muscle to a cold rubber band that snaps rather than stretches under sudden pressure. (C) Cold muscles, however, are noticeably less flexible than warmed ones, and stretching a stiff hamstring or ankle too quickly can cause a strain that keeps a student off the field for weeks.

Whenever someone learns that I spend hours drawing comics that almost nobody else ever sees, they usually ask why I bother, since the work will never be published or praised by a large audience. (A) Creating something, I now believe, often serves the creator first, giving shape to a feeling or idea that would otherwise stay vague and unexpressed. (B) For a long time, I struggled to answer that question honestly, assuming that art only counted as worthwhile once other people recognized it. (C) Watching my younger brother build enormous, pointless block towers purely for the joy of knocking them down, though, helped me understand something I had been missing.

My family decided to stay indoors for the entire day because of the extreme heat outside. (A) After lunch, we visited a small museum that had a special exhibition about ocean animals. (B) In the morning, we went to a nearby indoor climbing gym and learned some basic techniques. (C) In the afternoon, we finished the day by playing board games at a cozy cafe.