영어 모의고사 (자동 편성)

Scientists have long searched for a way to describe, in a single coherent framework, the outer limits within which human activity can safely continue without ①stabilizing the planet's fundamental systems. The concept of planetary boundaries, introduced by earth-system researchers, identifies nine interconnected processes, including climate change, biodiversity loss, and nitrogen pollution, each possessing a threshold beyond which abrupt and ②irreversible change becomes likely. Unlike conventional environmental limits, often defined locally, these boundaries are framed at a planetary scale, reflecting the idea that the Earth functions as a single ③interdependent system rather than a collection of isolated regions. Crossing one boundary, proponents argue, does not merely damage the system involved but can also ④destabilize others, since climate, oceans, and land are bound together by feedback loops that transmit disturbance across the system. Some philosophers have likened this framework to a ship's safe operating margin, within which passengers may move freely without risking the vessel's stability. Critics, however, contend that the boundaries are drawn with more ⑤confidence than the data can support.

The ecological footprint, a widely cited measure of how much biologically productive land and water a population requires to sustain its consumption, has become one of the most ①familiar tools for communicating humanity's environmental impact. By converting diverse activities, from driving to eating meat, into a single unit of land area, the measure allows policymakers to grasp whether a lifestyle exceeds what the planet can regenerate. This simplicity, however, is also the source of its most ②occasional criticism. Because the footprint aggregates dissimilar impacts, such as carbon emissions and water scarcity, into one composite figure, it can ③obscure important differences among problems that require distinct policy responses. A region might reduce its footprint by lowering carbon emissions while simultaneously depleting a local aquifer, yet the aggregate number could still appear to improve, ④concealing damage that demands urgent attention. Furthermore, the method assumes that all bio-productive land is roughly ⑤interchangeable, treating a hectare of forest as equivalent to a hectare of farmland, even though the two provide markedly different ecological functions.

Financial markets occasionally experience episodes in which asset prices rise far beyond any level that careful analysis of underlying fundamentals could justify, a phenomenon commonly attributed to herd psychology. During such episodes, individual investors often conclude that continuing to buy is reasonable simply because so many others are doing the same, rather than because any independent evaluation supports the purchase. Understanding market bubbles thus requires looking beyond conventional economic fundamentals toward the ___________ that binds individual investors into a single, momentum-driven crowd.

Imagine rewriting a bacterium's code the way a programmer edits a line of software, and much of what synthetic biology promises begins to make sense. Researchers in this field assemble standardized genetic parts into circuits that can be inserted into a cell, instructing it to perform a task that no natural organism would carry out. Because these circuits are built from interchangeable parts rather than designed from scratch each time, _______________. Critics note that biological systems rarely behave as predictably as electronic circuits, since a gene inserted into a new cell can interact with existing pathways in unexpected ways. Even so, as the catalog of standardized parts keeps expanding, engineers are gaining confidence to design increasingly complex systems.

John Rawls proposed an unusual thought experiment to determine what principles of justice a society ought to adopt. Imagine a group of rational people gathered to design the basic rules of their future society, but placed behind what he called a veil of ignorance, a condition under which none of them knows their own race, gender, wealth, talents, or social position in advance. Since no one can predict whether they will be born into privilege or poverty, _______________. Rawls argued that rational people placed in this position would not gamble on inequality; instead, they would favor arrangements that guarantee basic liberties for everyone and permit unequal outcomes only when those outcomes actually benefit the least advantaged.

The influence of the status quo bias extends well beyond personal finance into the design of public policy itself. (A) Consequently, policymakers who wish to encourage socially beneficial behavior, such as organ donation or energy conservation, have increasingly turned to adjusting default settings rather than relying solely on persuasion or financial incentives. (B) Countries that changed their organ donation systems from opt-in to opt-out, for example, observed dramatic increases in the proportion of citizens registered as donors, without any change in the underlying laws governing consent. (C) This outcome demonstrates that the default option itself functions as an implicit recommendation, one that citizens are reluctant to override even when doing so would take only a moment.

Social mobility refers to the movement of individuals or families between different positions within a society's system of stratification, whether upward, downward, or sideways. (C) Structural mobility, caused by large-scale economic shifts such as the growth of new industries, must be distinguished from individual mobility, which results from a single person's particular choices. (A) Sociologists distinguish intragenerational mobility, changes within a single person's lifetime, from intergenerational mobility, differences between the social position of parents and their children. (B) Research across many nations has found that education functions as the primary channel of upward mobility, yet access to quality education is itself unevenly distributed.

For decades, most vaccines worked by injecting a weakened or inactivated version of a pathogen, coaxing the immune system into recognizing an enemy it had never truly fought. (A) mRNA vaccines take a fundamentally different route, delivering only a short genetic instruction wrapped in a protective lipid capsule, one that tells the body's own cells how to manufacture a single harmless piece of a virus's outer surface protein. (B) Once those cells display the fragment, the immune system learns to recognize it as foreign and builds a defense, without ever having encountered the actual pathogen. (C) Because the vaccine contains no live virus and cannot alter a cell's own DNA, developers can redesign the genetic instructions within weeks whenever a pathogen mutates, a speed that has convinced many researchers the same platform could eventually fight diseases far beyond infectious illness.

주어진 문장: The first of these, often called System 1, operates beneath conscious awareness, shaping judgments before a person even realizes a decision is being made. Psychologists studying human judgment often describe the mind as operating through two distinct systems rather than a single unified process. ( ① ) System 1 works quickly and automatically, generating impressions and snap judgments without any noticeable sense of effort, much as a driver instinctively brakes when a ball suddenly rolls into the street. ( ② ) System 2, by contrast, is slow, deliberate, and demanding, engaged only when a problem requires careful calculation or conscious reasoning. ( ③ ) Most daily decisions are handled almost entirely by System 1, which allows people to function efficiently without exhausting their limited mental resources. ( ④ ) This efficiency comes at a cost, however, because System 1 relies on simple shortcuts that can produce systematic errors, and System 2 is frequently too lazy or too occupied to double-check them. ( ⑤ )

The same technology, researchers realized, could be pushed even further, from generic drug screening toward medicine tailored to a single individual. A liver no longer has to sit inside a human body to be studied closely. ( ① ) By coaxing stem cells to organize themselves within a nutrient-rich gel, scientists can now grow miniature three-dimensional structures called organoids, which reproduce much of the architecture and function of a real organ despite being no larger than a grain of rice. ( ② ) Unlike flat cultures grown on a plastic dish, which lose many of the cues that guide normal development, organoids let cells interact in three dimensions much as they would inside the body. ( ③ ) This yields tissue that behaves in strikingly realistic ways. ( ④ ) This fidelity has made organoids invaluable for testing how a drug affects human tissue before any patient is exposed, sparing researchers much of the burden of relying on animal models alone. ( ⑤ ) Some laboratories have even grown organoids from a single patient's own cells, raising the possibility of trialing a treatment on a miniature copy of that patient's organ before committing to an actual course of therapy.