All practice questions

[1] In the early twentieth century, the Chicago school of architecture revolutionized urban design by pioneering the use of steel-frame construction. [2] Before this innovation, buildings relied on thick, load-bearing masonry walls, which severely limited their height. [3] By replacing heavy stone with a lightweight steel grid, architects could build much taller structures while maximizing interior space and window area. [4] Chicago's population grew rapidly during this era, driving demand for dense commercial real estate. [5] Consequently, this engineering breakthrough laid the foundation for the modern skyscraper and transformed city skylines across the globe.

The writer is considering deleting Sentence 4 from the passage. Should the sentence be kept or deleted?

The following is a draft of an essay about the history of writing tools.

[1]
In the mid-sixteenth century, a massive storm in Borrowdale, England, uprooted several trees, revealing a dark, metallic substance beneath their roots. Local shepherds quickly found that this mineral, which they initially mistook for coal or lead, was excellent for marking their sheep. This substance was actually high-purity graphite, the only such deposit ever found in solid form. Although they did not yet realize it, the locals had uncovered the key ingredient for the modern pencil.

[2]
______[Blank]______. Before this discovery, writing required ink and quills, which were messy and slow, or lead rods, which left faint lines. The solid graphite from Borrowdale, however, could be easily cut into sticks and wrapped in string or wood. Suddenly, artists, merchants, and scholars had access to a portable, dry, and erasable writing tool that could keep pace with their thoughts.

Which of the following choices, if inserted in the blank, would best introduce the second paragraph by establishing its main focus?

In 1965, chemist Stephanie Kwolek was analyzing a liquid crystalline polymer solution when she noticed it had a low viscosity and a cloudy, watery appearance. Most researchers would have discarded such a mixture as a failed experiment. [1] Consequently, Kwolek insisted on spinning the solution in a laboratory spinneret to test its properties. The resulting fibers possessed an unprecedented strength-to-weight ratio, eventually leading to the development of Kevlar.

Which choice best replaces the underlined portion [1] to create a logical transition between the sentences?

Because the team was short on time, they decided to collaborate together in cooperation to finish the project.

Which choice is the most concise and grammatically correct option for the underlined portion?

Climatologists extract ice cores from deep within glaciers; these cylindrical samples of ice, which are shaped like cylinders, preserve tiny bubbles of ancient air, allowing researchers to measure greenhouse gas levels from hundreds of thousands of years ago.

Which of the following choices is the best edit to the underlined portion of the sentence?

Based on the passage below, which option represents the most grammatically correct punctuation for the underlined portion?

In 1936, the British mathematician Alan Turing published a landmark paper introducing the concept of a universal machine. This theoretical device, which could perform any computation, laid the foundation for the modern computer. Today, his work is celebrated as the dawn of the information age.

The following paragraph is from an essay about the preservation of historical architecture.

[1] Carved directly into the red volcanic tuff of northern Ethiopia, the eleven monolithic churches of Lalibela stand as masterpieces of medieval architecture. [2] Because these subterranean structures are dug entirely below ground level, they are uniquely vulnerable to water damage from seasonal rains. [3] For centuries, local priests and caretakers have struggled to siphon out the pooling rainwater that collects in the deep trenches surrounding the sanctuaries. [4] Recognizing this threat, international conservation teams recently constructed large, modern shelters over several of the churches to block incoming rain. [5] Unfortunately, these massive metal structures have generated controversy among locals who argue that the modern canopies disrupt the spiritual atmosphere of the sacred site.

The writer wants to add the following sentence to the paragraph:

"This persistent dampness, however, does not merely inconvenience the clergy; it actively dissolves the delicate volcanic stone from which the carvings are fashioned."

To make the paragraph most logical, this sentence should be placed:

When Mount Vesuvius erupted in 79 CE, it buried the Roman town of Herculaneum under a thick layer of volcanic ash. Villa excavations in the mid-eighteenth century revealed a library filled with hundreds of carbonized papyrus scrolls. For centuries, attempts to unroll these fragile documents resulted in their disintegration. Recently, however, researchers have utilized non-invasive imaging techniques to read the scrolls without physically touching them.

Using high-energy X-ray phase-contrast tomography, scientists can map the minute differences in thickness and texture of the carbonized ink compared to the carbonized paper. ____________ By translating these digital scans into three-dimensional models, researchers are beginning to read words that have been locked away for nearly two millennia.

The writer wants to add a sentence at the underlined portion to highlight the physical similarity between the ink and the scrolls, illustrating why traditional imaging methods fail. Which choice most effectively accomplishes this goal?

The following is a passage about a prehistoric fish.

The Living Fossil

[1]
In 1938, Marjorie Courtenay-Latimer, a museum curator in South Africa, received a phone call from a local trawler captain who had cleared his nets of an unusual catch. Among the pile of common sharks and rays lay a five-foot-long, steel-blue fish with thick, limb-like fins and a strange, armored head. Courtenay-Latimer, unable to identify the strange creature, brought it to the museum and eventually wrote to her colleague, J.L.B. Smith, a prominent chemist and amateur ichthyologist. Upon examining the specimen, Smith was astounded; it was a coelacanth, a prehistoric fish believed to have gone extinct 66 million years ago. This remarkable discovery shook the scientific world, challenging the prevailing geological timeline and redefining our understanding of vertebrate evolution.

[2]
[___]. Smith spent the next fourteen years searching for a second specimen to prove that the South African catch was not a freak anomaly. He printed thousands of flyers offering a reward for another specimen, distributing them along the eastern coast of Africa. In 1952, a second coelacanth was finally caught off the coast of the Comoros Islands, confirming that a living population did indeed exist in the Indian Ocean. Over the subsequent decades, marine biologists have discovered that these 'living fossils' reside in deep-water caves, move with an unusual locomotive pattern, and have changed very little over millions of years. Today, the coelacanth remains a symbol of biological endurance and mystery.

Which of the following sentences, if placed in the blank in Paragraph 2, would provide the most logical transition from the first paragraph and introduce the main topic of the second paragraph?

The restoration of the historic theater was delayed by several weeks because the plaster conservator had to meticulously repair the ornate ceiling, which was a time-consuming process that took a long time to complete.

Which of the following is the best choice for the underlined portion of the sentence?

[1] In 1959, Soviet geneticist Dmitry Belyaev began a decades-long experiment to understand how wild animals become domesticated. [2] He hypothesized that selecting animals solely for their tameness would trigger a cascade of physical and behavioral changes over generations. [3] To test this, Belyaev bred silver foxes, selecting only those that showed the least fear and aggression toward humans. [4] Over several generations, the foxes not only became friendly like domestic dogs but also developed floppy ears, spotted coats, and wagging tails. [5] Silver foxes are a color variant of the red fox, *Vulpes vulpes*.

The writer is considering deleting Sentence 5 from the paragraph. Should the sentence be kept or deleted?

A student is editing an essay about prehistoric reptiles.

To reconstruct the flight paths of ancient pterosaurs, paleontologists analyzed fossils for two key adaptations: hollow bones and elongated fourth fingers.

Which of the following options is the most grammatically correct correction for the underlined portion of the sentence?

Passage:
For decades, computer scientists believed that solving complex spatial optimization problems required sophisticated digital algorithms. [1] <underline>As a result</underline>, researchers recently demonstrated that the brainless slime mold *Physarum polycephalum* can design efficient network paths that rival human-engineered transit systems.

Question:
Which of the following choices most effectively transitions from the preceding sentence to the sentence that follows?

The following paragraphs are from an essay about audio preservation.

[1]
In the late nineteenth century, Thomas Edison's phonograph introduced the world to recorded sound using wax cylinders. Although these cylinders represented a monumental leap in technology, they were extremely fragile. Made of a soft metallic wax compound, the cylinders degraded slightly with each playback, and they were highly susceptible to mold growth and physical wear. As a result, early recordings of historical speeches and musical performances were gradually lost to time.

[2]
______[1]______ Using high-resolution digital cameras, the system takes microscopic images of the grooves on a cylinder's surface. Software then analyzes these visual representations to reconstruct the audio digitally, allowing researchers to play back the audio without ever touching the fragile wax. This technology has successfully rescued thousands of historic voices from silence, ensuring that these fragile records are preserved for future generations.

Which choice provides the most effective transition from the preceding paragraph to the rest of the passage?

In 1856, eighteen-year-old chemist William Henry Perkin was attempting to synthesize quinine, a treatment for malaria, in his home laboratory. Instead of quinine, he produced a dark, sticky sludge that turned out to be the first synthetic aniline dye. He noticed that the sludge had a rich purple color when it was dissolved in alcohol, which was a purple color that had never been produced artificially before. Perkin quickly patented the process, launching the modern synthetic dye industry.

Which choice most effectively and concisely expresses the information in the underlined portion of the sentence?

Each autumn, millions of monarch butterflies undertake a massive journey from North America to the forests of central Mexico. Due to the fact that they are possessed of a need to escape the cold winter temperatures, they travel up to three thousand miles to reach their nesting sites.

Which choice is the most concise and grammatically correct replacement for the underlined portion of the sentence?

The following sentences are from a paragraph about how pencils are manufactured. Arrange the sentences in the most logical order to form a coherent paragraph that begins with the main introduction and ends with a clear conclusion.

In 1964, physicists Arno Penzias and Robert Wilson were troubled by a persistent, low-frequency hum picked up by their Holmdel horn antenna. After ruling out interference from urban area signals, they meticulously cleaned the giant instrument, scrubbing away nests left by roosting pigeons. However, their efforts to eliminate the noise were unsuccessful, because the static was still heard by them, persistently continuing. Eventually, they realized they had stumbled upon the cosmic microwave background radiation, the remnant glow of the Big Bang.

Which of the following choices is the best replacement for the underlined portion of the sentence?

Although fireflies are best known for their glowing lanterns, not all species of these insects can actually produce light. Because of the reason that some species lack the chemical organs that are needed to glow, they rely on chemical scents called pheromones to find mates.

Which of the following is the best revision of the underlined portion of the sentence?

Passage Excerpt:

In the late nineteenth century, the high-wheel bicycle, or "penny-farthing," dominated the roads, but its massive front wheel made it notoriously unstable and dangerous to ride. When the "safety bicycle" was introduced in 1885 with two wheels of equal size and a chain-driven rear wheel, [underlined portion]. Today, millions of people worldwide rely on bicycles for daily commuting and recreation.

The writer wants to complete the sentence in a way that emphasizes the transition from the safety bicycle's initial reception as a niche novelty to its rapid, widespread adoption by the general public. Which choice best accomplishes this goal?