영어 모의고사 (자동 편성)

When a country physician named Edward Jenner noticed that milkmaids ① who had caught cowpox seemed immune to smallpox, he set in motion a medical revolution without fully understanding why it worked. For nearly two centuries afterward, vaccine development proceeded largely by trial and error, ② weakened or killing a pathogen and testing whether the resulting preparation could train the immune system without causing disease itself. This method produced genuine successes, eventually eliminating smallpox worldwide and reducing diseases such as polio and measles, but each new vaccine still ③ required years of laboratory work with no guarantee of success. Advances in molecular biology eventually allowed researchers ④ to isolate a single protein from a pathogen's surface rather than using the whole organism, producing vaccines with fewer side effects and a more predictable safety profile. The most recent shift, toward delivering genetic instructions rather than proteins themselves, represents the latest chapter in a story ⑤ that began with an eighteenth-century doctor's curiosity about a puzzling immunity among dairy workers.

Generative AI systems learn to write, draw, and compose by studying enormous collections of existing human work, much of ① which was created without the artists' knowledge or consent. Supporters of the technology argue that this process ② resembles how a human student learns by studying the masters, absorbing style and technique rather than copying specific pieces. Critics respond that the comparison ③ breaks down at scale: a single AI model can absorb millions of works in days and then generate outputs that directly compete with the very artists whose work ④ trained it. Courts around the world are now ⑤ ask to decide whether training an algorithm on copyrighted material counts as fair use or as infringement.

As more businesses move their operations online, cyberattacks ①have become one of the most serious threats facing modern companies. Hackers now target everything from small retail websites to massive financial institutions, ②stealing sensitive data or demanding ransom payments. These specialists design systems ③that detect suspicious activity, patch vulnerabilities before criminals can exploit them, and train employees to recognize phishing attempts. Unlike many technical fields, cybersecurity requires constant learning, ④since hackers continually develop new methods to bypass existing defenses. Universities have responded by creating specialized degree programs, while many companies now ⑤offers scholarships to attract students into this growing field.

Among the many tools available to those who design choice environments, few are as quietly ①powerful as the default option, the alternative that takes effect automatically unless a person actively selects something else. Because changing a default requires ②deliberate effort, many individuals simply accept whatever arrangement has been preselected for them, regardless of whether that arrangement actually serves their interests best. Countries that automatically enroll citizens in organ donation programs, requiring an explicit request to opt out, consistently report far ③lower donor registration rates than countries that require citizens to actively opt in. Employers who automatically enroll new hires in retirement savings plans likewise see participation rates climb dramatically compared with employers who leave enrollment entirely voluntary. What makes default options so influential is not merely convenience; a default also functions as an implicit signal about what is considered ④normal or recommended, subtly shaping perceptions even among individuals who believe themselves to be deciding ⑤independently.

Summer heat can be just as dangerous for pets as it is for people, because ___________. Owners must therefore provide plenty of fresh water, avoid walking pets during the hottest hours, and never leave them alone in a parked car.

Picture a woman who receives a plain ceramic mug as a free gift at a conference and, later that afternoon, refuses to sell it for anything less than triple its price in the gift shop downstairs. Before she owned the mug, she would never have paid extra for it; once it became hers, however, its value in her mind rose sharply, simply because she now possessed it. Owners consistently demand more money to give something up than buyers are willing to offer for that very same item, _______________. Some economists argue that this effect explains why negotiations over inherited property so often collapse, since each side quietly attaches a different value to what it currently holds.

Influencer marketing has become one of the most powerful tools that companies use to reach young consumers. Unlike traditional advertisements, which often feel distant and impersonal, posts created by influencers seem more like advice from a trusted friend. This sense of closeness, built through years of sharing daily life online, makes followers more willing to trust product recommendations than ordinary commercials. For example, a skincare brand promoted by a popular lifestyle influencer can sell out within hours simply because her audience believes her opinions are honest. However, this trust can be exploited when influencers promote products they have never actually tried. As a result, several countries now require influencers to clearly disclose paid partnerships before posting sponsored content. Consumers are becoming more cautious, checking whether reviews are sponsored before making a purchase. In the end, influencer marketing ___________.

Air conditioners make summer days more comfortable, but using them incorrectly can harm your health. Many people set the temperature far below the outdoor temperature to cool down quickly. However, doctors recommend ___________. A larger gap forces your body to adjust constantly, which can weaken your immune system and cause headaches, fatigue, and a stuffy nose.

Technology has changed the way many jobs are performed today. (A) As a result, workers now need to keep learning new tools throughout their careers. (B) A graphic designer, for instance, must understand digital software that did not exist twenty years ago. (C) Machines and computer programs now handle tasks once done entirely by people.

Career counselors often use simple questions to help students understand themselves. (A) A student who answers "playing music" might be encouraged to explore careers related to sound or performance. (B) For instance, a counselor might ask what activity makes a student lose track of time. (C) In this way, ordinary daily habits can become useful clues for choosing a future career.