All practice questions

Passage Excerpt:

In 1911, explorer Hiram Bingham climbed into the Peruvian Andes and encountered the ruins of Machu Picchu, a fifteenth-century Incan citadel. [1] Bingham was actually looking for Vilcabamba, the last stronghold of the Incan Empire. However, his discovery of Machu Picchu captured the world's imagination and brought global attention to Incan history.

Which choice, if added at Point [1], most effectively emphasizes the physical difficulty of Bingham's journey to the ruins?

The stage manager coordinated a series of abrupt, demanding, rehearsals, and she resolved to extend the preparation period by two weeks. Which of the following alternatives to the underlined portion is grammatically correct?

While analyzing the ancient clay tablets from the Mesopotamian ruins, the paleographer identified a series of faded, wedge-shaped cuneiform symbols, and she noted how the scribe had altered the layout.

Which choice best punctuates the underlined portion of the sentence?

The following paragraphs are from an essay about the Svalbard Global Seed Vault.

Deep within a sandstone mountain on the remote Norwegian archipelago of Svalbard lies the Global Seed Vault, a facility designed to safeguard the world’s agricultural biodiversity against global catastrophes. Often referred to as the "Doomsday Vault," the repository holds millions of seed samples in sub-zero chambers. The site was specifically chosen for its tectonic stability and its permafrost, which serves as a natural freezer to ensure the seeds remain preserved even in the event of a total power failure.

[12]

In 2017, unprecedented regional warmth caused the surrounding permafrost to melt, sending a deluge of water into the entrance tunnel. Although the water froze before reaching the actual vault chambers and no seeds were harmed, the breach exposed a critical vulnerability. As a result, engineers had to install waterproof walls and drainage channels, demonstrating that even the most secure structures must adapt to the accelerating realities of climate change.

Which choice provides the most effective transition from the preceding paragraph to the paragraph that follows?

Modern concrete relies on Portland cement, a binding agent that degrades over decades, especially in marine environments. In contrast, ancient Roman harbor structures built with a mixture of volcanic ash, lime, and seawater have survived for over two millennia. Geologists studying these ancient piers have discovered that seawater actually strengthens the concrete over time. The key lies in a rare mineral called aluminous tobermorite, which crystallizes within the concrete as seawater percolates through the porous structures.

This crystallization process occurs when the alkali-rich seawater reacts with the volcanic ash components. Instead of causing cracks as it would in modern steel-reinforced concrete, the growth of these mineral crystals reinforces the structural matrix. This self-healing mechanism represents a paradigm shift in materials science, prompting researchers to develop modern analogues that mimic this ancient durability. [4]

Which choice provides the most effective conclusion to the paragraph and passage by summarizing the main finding about Roman concrete and emphasizing its implications for the future of engineering?

The following paragraphs are from an essay about the history of the safety bicycle.

In the late nineteenth century, the invention of the "safety bicycle"—featuring two wheels of equal size and a chain drive—revolutionized personal transportation. Prior to this, cycling was a hazardous sport dominated by athletic young men riding precarious "high-wheelers." The safety bicycle, however, was accessible to everyone, regardless of age or gender, and quickly became a national craze.

[1] Indeed, the safety bicycle was much easier to ride than its predecessor. This shift allowed them to travel unaccompanied, bypassing the traditional chaperones required for Victorian women. The restrictive corsets and heavy skirts of the era were also impractical for riding, leading to the popularization of "bloomers" and shorter hemlines. Consequently, the bicycle became a catalyst for both dress reform and the broader women's suffrage movement.

Which choice provides the most effective transition from the preceding paragraph?

The brainless slime mold *Physarum polycephalum* exhibits a remarkable form of primitive intelligence. When placed in a maze with oat flakes at two separate exits, the organism—which is essentially a single, giant cell containing millions of nuclei, soon reorganizes its tubular network to connect the food sources via the shortest route. By pruning inefficient paths and strengthening successful ones, the mold creates a highly optimized network that closely mirrors human-designed transit systems.

Which choice best maintains grammatical consistency and punctuation standards in the passage?

For centuries, writers and artists used lead rods to make marks on paper. In 1564, a massive deposit of pure graphite was discovered in Borrowdale, England. [3] Graphite is a crystalline form of the element carbon. Early pencil makers wrapped the graphite rods in string or encased them in wooden sleeves to prevent the soft material from breaking.

The writer is considering deleting Sentence 3 from the paragraph. Should this sentence be kept or deleted?

In the early nineteenth century, Sophie Blanchard became one of France’s most celebrated aeronauts. While her late husband, Jean-Pierre Blanchard, had pioneered ballooning, Sophie carved out her own legacy by performing daring solo flights before massive crowds. She specialized in night ascents, often launching fireworks from her hydrogen balloon, which dazzled spectators across Europe. Emperor Napoleon Bonaparte was so impressed by her skills that he appointed her the Official Aeronaut of the Empire.

The writer wants to conclude the paragraph with a sentence that emphasizes Sophie Blanchard's status as a pioneering and successful solo aeronaut, while tying back to the paragraph's focus on her achievements. Which choice best accomplishes this goal?

In 1943, marine engineer Richard James was working in a Philadelphia shipyard, trying to develop a spring that could stabilize sensitive naval instruments during storms. While working, he accidentally knocked one of his experimental steel springs off a shelf. To his amazement, the spring did not merely fall; it gracefully stepped down a stack of books, onto a tabletop, and then coiled itself upright on the floor. James immediately realized that this walking spring could make a wonderful toy. He and his wife, Betty, spent the next two years developing the product, eventually naming it the 'Slinky.' In 1945, they demonstrated the toy at a local department store, and all 400 units sold out within ninety minutes.

The writer wants to add a concluding sentence that emphasizes the toy's widespread and lasting popularity. Which choice best accomplishes this goal?

Chladni Patterns

In 1787, German physicist and musician Ernst Chladni published *Discoveries in the Theory of Sound*, a seminal work that laid the foundation for modern acoustics. [1] __________________________________________________ Chladni’s technique was elegant in its simplicity: he drew a violin bow along the edge of a metal plate covered with a thin layer of sand. As the plate vibrated at specific frequencies, the sand drifted away from the moving parts (nodes) and settled along the stationary lines (nodal lines), forming intricate geometric patterns. These visual representations of sound waves, now known as 'Chladni patterns,' provided the first systematic method for analyzing how physical materials vibrate.

Which of the following choices, if inserted at [1], would provide the most effective introduction to the passage by establishing its central focus?

In 1982, marine archaeologists raised the *Mary Rose*, a Tudor warship that sank in 1545. The recovered artifacts, which were preserved in the seabed silt for centuries, provide valuable details about life in the sixteenth century.

Which choice best punctuates the underlined portion of the sentence?

Passage Excerpt:

Unlike European navigators who relied on magnetic compasses and sextants to chart their courses across the open ocean, ancient Polynesian wayfinders navigated vast distances of the Pacific by reading the natural world. They observed the paths of stars, the flight patterns of birds, and the subtle behavior of ocean currents. To teach apprentice navigators how to interpret these complex ocean wave patterns, experienced wayfinders constructed stick charts. [X] These devices did not represent physical distances in the way a modern map does. Instead, they served as abstract, mnemonic training aids.

Given that all the choices are true, which one provides the most specific and detailed description of the physical composition of the stick charts and how they functioned as wave diagrams?

The writer is considering adding a sentence at the beginning of the passage (before sentence 1):

[1] For centuries, the Julian calendar, introduced by Julius Caesar in $46$ BCE, served as the primary method of tracking time in the Western world. However, the Julian system calculated the solar year as exactly $365.25$ days, which was approximately $11$ minutes and $14$ seconds longer than the actual astronomical year. While this discrepancy seemed negligible in the short term, it accumulated over centuries, drifting by one full day every $128$ years. By the sixteenth century, this error had shifted the calendar by ten days, disrupting the scheduling of Easter and other seasonal festivals.

[2] To address this compounding error, Pope Gregory XIII assembled a team of astronomers and mathematicians led by Aloysius Lilius. In $1582$, the Gregorian calendar was introduced, implementing a refined system for leap years: centurial years would only be leap years if they were divisible by $400$. To correct the accumulated drift, ten days were eliminated from October $1582$, meaning that the day following October $4$ was designated as October $15$. Although met with initial resistance, this system gradually achieved global adoption, aligning human timekeepers with the rhythm of the stars.

Which of the following choices for the proposed sentence most effectively introduces the main topic of the passage?

The writer is considering adding the following sentence to the paragraph below:

'This extraction process was incredibly laborious, requiring thousands of snails to produce just one gram of dye.'

[1] In 1856, eighteen-year-old chemistry student William Henry Perkin was attempting to synthesize quinine, a treatment for malaria, in his home laboratory. [2] Instead of the clear cure he hoped for, his experiment resulted in a dark, sticky sludge. [3] Perkin noticed that the alcohol he used to clean the flask turned a beautiful purple color. [4] Recognizing the commercial potential of this vibrant hue, he patented the substance as 'mauveine,' the world's first synthetic organic dye. [5] Historically, purple dye had been a luxury reserved for royalty, as the pigment could only be harvested in tiny amounts from predatory sea snails.

To make the paragraph flow most logically, where should this sentence be placed?

For decades, musicologists and collectors have debated the authenticity of several highly prized violins attributed to Antonio Stradivari. Traditional authentication relies heavily on stylistic analysis—examining the varnish, the carving of the scroll, and the geometry of the sound holes. However, these subjective methods can be imprecise and easily deceived by expert counterfeiters. To address this, researchers turned to dendrochronology, the science of analyzing tree-ring growth patterns. By comparing the wood's growth rings to historical climate records, scientists can establish the exact calendar years during which the spruce and maple trees used to construct the instruments grew.

This technique has proved invaluable for verifying the age of historic instruments. For instance, when researchers examined the famous "Messiah" Stradivarius, they analyzed the tree rings on its spruce top. The growth patterns matched tree-ring databases from the Alpine regions, confirming that the wood was harvested in the early eighteenth century, aligning perfectly with Stradivari's lifetime.

Which of the following choices best concludes the passage by reinforcing the idea that dendrochronology provides a reliable, scientific method of authentication?

In the field of dendrochronology, scientists analyze the growth rings of ancient trees to reconstruct past climate conditions; they look for a specific pattern: narrow rings indicating years of severe drought.

Which of the following options is the best punctuation for the underlined portion of the sentence?

In nineteenth-century printing shops, typesetters hand-assembled individual metal letters to form words. To save time when printing frequently used phrases, workers cast entire phrases as single, solid plates of metal. This printing plate was called a *cliché*, a word mimicking the clicking sound made during the plate-making process. Over time, the word shifted from referring to the metal plate to describing the overused, unoriginal phrases printed by it. Today, most printing presses are computerized and no longer use physical plates.

Should the writer keep or delete the underlined sentence?

Deep-sea hydrothermal vents support a thriving ecosystem of organisms that survive without sunlight, they rely on chemical energy from the Earth's crust instead.

Which choice best punctuates the underlined portion of the sentence?

Passage Excerpt:

In the winter of 1903, while visiting New York City, Mary Anderson noticed that a streetcar driver had to keep the front window open to clear falling sleet from the glass. Upon returning to her home in Alabama, she designed a hand-operated device to solve this problem. [1] She was granted a patent for her window-cleaning device in November 1903.

Given that all the choices are true, which choice, if added at Point [1], best supports the idea that Anderson's design was both simple and easy to operate?