All practice questions

Many literary scholars have argued that the nineteenth-century author’s depictions of working-class neighborhoods were purely documentarian, intended to serve as objective records of contemporary social conditions. However, a closer reading of her diaries reveals that this supposedly neutral portrayal was actually highly ______; her selection of details was carefully designed to sway public opinion and inspire political action.

Which choice completes the text with the most logical and precise word or phrase?

Microorganisms in deep terrestrial aquifers subsist under extreme energy limitation, often taking centuries to divide. Scientists debate whether these microbes maintain active cellular repair mechanisms or merely persist in a dormant state of gradual decay. To investigate, researchers analyzed intracellular proteins from microbes collected two kilometers below Earth’s surface. They focused on amino acid racemization, a spontaneous process that converts biological L-amino acids into D-amino acids, which cells must expend energy to repair. The team found that the ratio of D- to L-amino acids in the proteins was significantly lower than expected from spontaneous chemical decay over the geological age of the aquifer, suggesting that ______

Which choice most logically completes the text?

For decades, twentieth-century historians and ecologists operated under the assumption that the Americas prior to 1492 were an untamed wilderness, largely untouched by human hands. This 'pristine myth' suggested that indigenous populations had minimal impact on their environments. However, geographer William Denevan challenged this consensus by synthesizing archaeological and environmental data. Denevan demonstrated that pre-Columbian societies actively managed their landscapes through sophisticated agricultural techniques, controlled burning, and extensive agroforestry. Rather than passive inhabitants of an unaltered wild, these populations had profoundly modified the Americas, creating what Denevan termed an 'anthropogenic forest.' By reframing early American landscapes as actively managed ecosystems, Denevan's work forced a fundamental shift in both historical interpretation and modern conservation strategies, which previously sought to restore forests to a fictional human-free baseline.

Which choice best states the main purpose of the text?

Although many municipal governments have implemented digital portals to streamline public services, these online systems have not entirely eliminated the necessity for physical offices. Indeed, in communities with limited internet access, digital tools often fail to _______ the need for in-person support, demonstrating that technology cannot fully replace traditional administrative infrastructure.

Which choice completes the text with the most logical and precise word or phrase?

The thorny devil (*Moloch horridus*), a lizard native to the arid regions of Australia, has evolved a specialized method for gathering water in its desert habitat. Rather than drinking directly through its mouth, the lizard utilizes a network of microscopic grooves located between its scales. When dew or rain contacts the lizard's skin, capillary action draws the liquid through these grooves directly toward the corners of its mouth, where the lizard then swallows it. This unique physical adaptation allows the thorny devil to harvest moisture from its surroundings simply by standing in damp sand or encountering light precipitation.

Based on the text, what is true of the thorny devil's water-gathering process?

Which choice completes the text with the most logical and precise word or phrase?

In architectural conservation, researchers study the degradation of limestone monuments exposed to acid rain. Limestone consists primarily of calcium carbonate ($CaCO_3$), which reacts with acid rain to form soluble compounds, causing the stone to dissolve over time. However, when monuments are treated with a protective coating of ammonium oxalate, the compound reacts with calcium carbonate to form calcium oxalate. Because calcium oxalate is highly insoluble in acidic solutions, researchers hypothesize that applying this treatment to limestone monuments will shield the stone from dissolution because ______

Which choice most logically completes the text?

Astrophysicist Dr. Niloufar Esfandiari and colleagues investigated the rotational dynamics of middle-aged main-sequence stars (stars of similar mass and evolutionary stage to the Sun). According to standard models of stellar evolution, magnetic braking—the process by which a star's magnetic field interacts with its stellar wind to shed angular momentum—continues steadily throughout a star's main-sequence lifetime, causing a continuous decline in rotation speed and magnetic activity as the star ages. However, Esfandiari and her team hypothesized that once stars reach middle age, their magnetic braking efficiency drops sharply, resulting in a state where rotation rates and magnetic activity levels remain relatively stable thereafter.

Which finding from the team's observations, if true, would most directly support the team's hypothesis?

Early medieval European Mappaemundi were not intended to serve as navigational aids; instead, they functioned as theological and historical diagrams, organizing space according to spiritual importance rather than empirical distance. Some scholars have suggested that this focus on symbolic geography reflects a widespread ignorance of practical surveying techniques during the period. However, cartographic historian Maria Werden argues that this view overlooks the highly sophisticated engineering plans and cadastral surveys that were routinely produced for land-ownership disputes at the time. According to Werden, the religious nature of medieval world maps was a deliberate choice of genre rather than a limitation of skill.

Which choice best describes the function of the underlined sentence in the text as a whole?

Text 1
For decades, ecologists believed that introducing non-native plant species to an ecosystem always reduces biodiversity by outcompeting native species. In a 2021 study, Dr. Elena Rostova examined urban parks and found that some non-native plants actually coexisted with native species without reducing their numbers. Rostova argued that under certain conditions, non-native plants do not harm local biodiversity.

Text 2
Building on Rostova’s research, biologist Marcus Vance analyzed rural grasslands. Vance observed that while non-native plants coexisted with native species in resource-rich soil, they quickly displaced native species in resource-poor soil. Vance concluded that soil nutrient levels determine whether non-native plants threaten native biodiversity, suggesting that Rostova’s findings are accurate but limited to specific environments.

Based on the texts, how would Vance (Text 2) most likely characterize Rostova's conclusion (Text 1)?

Anthropologist Dr. Clara Zhang investigated the social functions of pottery decorative patterns among the ancient Puebloans in the American Southwest during the Pueblo III period (c. 1150–1300 CE). Some scholars argue that these complex geometric designs served primarily to identify individual household lineage. However, Zhang hypothesizes that the designs functioned as shared regional symbols to facilitate cooperative trade alliances between distinct communities during periods of resource scarcity.

Which finding, if true, would most directly support Zhang's hypothesis?

In architectural psychology, the concept of "biophilic design" suggests that incorporating natural elements into buildings can improve occupant well-being. Architect Maya Lin designed the Langston Library with large windows that look out onto a preserved forest. The library has since recorded higher visitor satisfaction and lower stress levels among students than traditional libraries. This suggests that visible natural landscapes can have a direct, positive impact on mental fatigue.

Which choice best describes the function of the underlined sentence in the text as a whole?

Botanist Dr. Lisa Patel studied the defense mechanisms of the wild cabbage plant (*Brassica oleracea*). Patel claimed that wild cabbage plants increase their production of mustard oils—chemical compounds that deter pests—specifically in response to insect feeding, rather than maintaining high levels of these oils constantly.

Which choice, if true, would most directly support Patel's claim?

For decades, linguists debated whether human language originated primarily from manual gestures or vocal calls. Proponents of the gestural theory pointed to the mirror neuron system in primates, which coordinates motor actions and imitation, suggesting language developed as gestures before transitioning to speech. Conversely, vocal theorists argued that early hominids relied on auditory signals for long-distance coordination in open environments. Recently, however, researchers have proposed a multimodal framework, suggesting that gestural and vocal communication evolved in tandem rather than sequentially. This integrated perspective reconciles the two traditional viewpoints, demonstrating that early communicative behaviors were likely composite systems of sound and movement.

Which choice best describes the overall structure of the text?

Art conservators restoring centuries-old oil paintings must exercise great caution during the cleaning process. Applying too much solvent can permanently damage the original paint layer, while applying too little leaves the surface dirt intact. Consequently, conservators depend on ________ testing to determine the safest and most effective concentration of cleaning agents before starting their work.

Which choice completes the text with the most logical and precise word or phrase?

Prior to the widespread adoption of the electric telegraph in the mid-nineteenth century, newspaper articles in the United States typically followed a chronological narrative style, rich with descriptive detail and authorial commentary. However, because early telegraph transmissions were both costly and prone to frequent service interruptions, reporters using the technology were forced to compress their stories, transmitting the most critical facts first. This technological limitation gave rise to the "inverted pyramid" format of journalism, which prioritizes the who, what, where, and when in the opening paragraph. Although some contemporary critics argued that this shift stripped news writing of its literary merit, the efficiency and clarity of the inverted pyramid style ultimately established it as the dominant convention of modern news reporting.

Which choice best states the main purpose of the text?

In a 2021 study, marine biologist Dr. Elena Vance and her team investigated the social behaviors of juvenile lemon sharks (*Negaprion brevirostris*) in the Bahamas. Traditional models of shark behavior often depict them as solitary predators that interact only for mating or hunting. However, Vance's team observed that the young sharks frequently grouped together in shallow mangrove nurseries, actively choosing to associate with specific individuals over others. By tracking these interactions, the researchers demonstrated that juvenile lemon sharks exhibit social preferences and form stable social networks. This suggests that sociality may play a crucial role in the early survival strategies of these sharks, challenging the long-held view that sharks lack complex social structures.

Which choice best states the main purpose of the text?

For decades, immunology operated under the self/nonself model, which posited that the immune system's primary function is to distinguish between endogenous tissues and foreign invaders, launching attacks only against the latter. However, this paradigm struggled to explain why the body tolerates harmless foreign microbes (like gut flora) while attacking its own tissues in autoimmune diseases. To resolve these anomalies, Polly Matzinger proposed the 'danger model,' suggesting that the immune system is activated not by foreignness per se, but by alarm signals released from damaged or distressed host cells. By shifting the focus from detection of foreign entities to the evaluation of cellular health, Matzinger's framework reorganized fundamental assumptions about immunological defense, providing a more cohesive explanation for both tolerance and pathogenesis.

Which choice best states the main purpose of the text?

Prior to the development of radar in the late 1930s, Great Britain relied on a network of concrete acoustic mirrors built along its southern and eastern coasts to detect incoming enemy aircraft. Designed by acoustic pioneer William Sansome Tucker, these curved structures functioned by reflecting and focusing sound waves onto a central point, where a listener equipped with stethoscopes could hear the engine noise of distant planes. While the mirrors could detect aircraft up to twenty-five miles away, their efficacy was highly contingent on ambient meteorological conditions; high winds or coastal surf could easily drown out the focused sound waves. Furthermore, the rapid increase in aircraft speeds during the 1930s rendered the detection window provided by the mirrors too narrow for effective defense mobilization, leading to the system's retirement in favor of radio-based detection.

Based on the text, which statement is true about the acoustic mirrors?

The Fleischmann’s glass frog (*Hyalinobatrachium fleischmanni*) exhibits a unique adaptation to evade predators during sleep. Researchers have found that while sleeping, the frog sequesters approximately 89 percent of its red blood cells within its liver. Because the frog's skin and muscles are translucent, hiding these pigment-rich red blood cells makes the frog's body nearly transparent, allowing it to blend seamlessly into surrounding leaves. Once the frog wakes up and becomes active, the red blood cells exit the liver and resume circulation throughout the body, restoring its typical color and activity levels.

Based on the text, what is true of a Fleischmann's glass frog when it is awake and active?