Tüm alıştırma soruları

During a freezing winter trip to New York City in 1903, Alabama native Mary Anderson noticed that streetcar drivers had to open their front windows or step outside to clear ice and sleet from their windshields, endangering themselves and their passengers. This hazardous situation inspired her to design a rubber squeegee blade operated by a hand lever inside the vehicle. Anderson was granted a patent for her window-cleaning device in 1903, yet manufacturing firms rejected her invention, believing it would distract drivers. Consequently, she never profited from her creation, and the patent eventually expired. [1]

The writer wants to add a sentence at the end of the passage (at point [1]) to conclude the discussion of Mary Anderson's invention. Which choice best accomplishes this goal by summarizing the main significance of her design while remaining consistent with the passage's tone and details?

Identify the correct punctuation mark that completes the sentence boundary in the passage. What punctuation mark must be inserted into the blank to properly end the first sentence?

Determine which single punctuation mark should replace the blank to correctly join the independent clauses in the sentence below.

In 1967, astrophysicist Jocelyn Bell Burnell observed a series of regular radio pulses that she initially nicknamed 'Little Green Men'; however, further analysis revealed the source to be a rapidly spinning neutron star, it is a pulsar, which emits electromagnetic radiation along its magnetic poles.

Which of the following is the correct punctuation and phrasing for the underlined portion of the sentence?

During the Northern Renaissance, painters revolutionized the medium of panel painting by experimenting with new binders. Artists who adopted oil-based pigments, which dried much slower than traditional egg tempera achieved unprecedented levels of detail and luminosity. This technical shift allowed for the realistic depiction of light and texture that defined the era.

Which of the following options correctly punctuates the underlined portion of the sentence?

Although the paleontologist had expected to find only common bivalve fossils in the limestone stratum, she instead uncovered a well-preserved, complete, skeleton of an ancient marine reptile, which she spent the next week carefully excavating.

Which of the following choices best punctuates the underlined portion of the sentence?

To prepare the spacecraft for its historic voyage, engineers conducted a series of tests on the complex, advanced navigation systems, and they verified that every sensor was calibrated to withstand extreme solar radiation.

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

Deep within the dense canopy of the Guatemalan jungle, archaeologists have long struggled to locate ancient Maya structures. Recently, however, light detection and ranging (LiDAR) technology has revolutionized the field, researchers fire millions of laser pulses from an airplane to map the ground beneath the foliage. This method has revealed thousands of previously hidden ruins, including pyramids, highways, and defensive walls.

Which of the following choices best punctuates the underlined portion of the passage?

[1] In 79 CE, the eruption of Mount Vesuvius buried the villa of Herculaneum, carbonizing hundreds of papyrus scrolls and rendering them too fragile to unroll. [2] For centuries, any attempt to physically open these scrolls resulted in their immediate destruction. [3] Recently, however, researchers have utilized high-resolution X-ray phase-contrast tomography to virtually unwrap the scrolls, revealing the faint density differences between the carbon-based ink and the carbonized papyrus. [4] Advanced machine learning algorithms are then trained to detect these subtle texture variations, translating them into legible Greek characters. [5] Computer scientists have also used similar machine learning models to identify fraudulent paintings in major art museums. [6] As this digital technology continues to advance, scholars hope to recover lost philosophical treatises that have remained unreadable for nearly two millennia.

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

The following is an excerpt from an essay about early Earth's climate.

[1]
In $1972$, astronomers Carl Sagan and George Mullen pointed out a puzzling contradiction that threatened our understanding of Earth's early history. According to standard astrophysical models, our sun was about $30$ percent dimmer during the Archean Eon, four billion years ago, than it is today. With so little solar energy reaching the planet, Earth should have been a frozen wasteland, completely locked in ice. Yet, geological evidence from that same period—such as water-worn pebbles and ancient sedimentary rocks—reveals that liquid water flowed abundantly across the surface, and primitive life was already thriving.

[2]
To resolve this paradox, researchers have proposed various atmospheric models. One prominent theory suggests that a dense greenhouse gas envelope, consisting of carbon dioxide and perhaps ammonia or methane, acted as a heavy blanket to trap what little heat the faint sun provided. Others argue that Earth's lower albedo, or reflectivity, allowed the surface to absorb more solar radiation than it does today. Understanding how Earth maintained its liquid oceans during this period is not just a historical curiosity; it also helps astronomers define the boundaries of habitable zones around distant stars.

Which choice provides the most effective transition from the first paragraph to the second paragraph and introduces the main topic of the second paragraph?

Many local community gardens have started implementing rainwater harvesting systems to conserve water. These systems collect rain that runs off roofs and store it in large barrels. Which can then be used to water the plants during dry spells. This practice helps reduce municipal water usage significantly.

Which of the following options best corrects the underlined portion of the passage?

During a trolley ride in a freezing New York City winter, Mary Anderson observed the driver repeatedly opening the front window pane to brush away falling sleet, exposing passengers to the biting cold. Determined to find a solution, she sketched a device featuring a hand-operated lever inside the vehicle linked to a rubber blade on the outside. Although she secured a patent for her mechanical sweeper in 1903, manufacturing companies rejected her design, viewing it as a dangerous distraction for drivers.

The writer wants to add a sentence at the end of the paragraph that contrasts the initial commercial failure of Mary Anderson's invention with its eventual universal adoption. Which choice best accomplishes this goal?

While the school's teachers prepared for the upcoming semester, the administrators' chief goal was it's successful launch.

Which of the following is the correct spelling and punctuation of the underlined portion of the sentence?

The document <u>that contains the signature, which was drafted in $1776$,</u> is preserved in the national archives. It is displayed under protective glass to prevent fading.

Which choice is the correct punctuation for the underlined portion of the sentence?

During his expedition to the Antarctic, the explorer packed only the absolute essentials: a thermal tent, a sleeping bag, and a portable stove.

Which of the following options correctly punctuates the underlined portion of the sentence?

For decades after the Tudor warship *Mary Rose* was raised from the Solent in 1982, conservators kept the wooden hull constantly saturated with a chilled freshwater mist to prevent it from drying out and collapsing. Eventually, they began actively replacing the water in the wood cells with polyethylene glycol (PEG), a water-soluble polymer.

Given that all the choices are true, which choice most clearly highlights the transition from temporary preservation methods to a permanent, structural stabilization technique while emphasizing the scientific complexity of the process?

Before beginning the pottery class, the instructor listed the required materials, including: clay, a sponge, and a wire tool.

Which of the following options represents the correct punctuation for the underlined portion of the sentence?

During the Islamic Golden Age, scholars made significant strides in understanding the behavior of light. The physicist Ibn al-Haytham , who is often considered the father of modern optics, revolutionized scientific methodology through his rigorous experiments. In his influential work *Book of Optics*, he demonstrated that light travels in straight lines and enters the eye to produce vision.

Which choice best punctuates the underlined portion of the sentence?

In his landmark studies of memory, psychologist Hermann Ebbinghaus identified a critical phenomenon: the forgetting curve demonstrates that information is lost rapidly after learning unless it is actively reviewed.

Which of the following is the most appropriate edit to the underlined portion?

Reading Between the Lines

[1]
In $1948$, Norman Joseph Woodland, a graduate student at Drexel Institute of Technology, set out to solve a persistent problem for supermarkets: how to automate the tedious process of inventory checking and checkout. Standard methods relied on manual entry, which was slow and prone to human error. Woodland, along with his classmate Bernard Silver, began brainstorming solutions, but their initial ideas, which involved ultraviolet ink, proved impractical and expensive.

[2]
The breakthrough came in an unexpected setting. While visiting his grandfather in Miami, Woodland sat on the beach, pondering how to encode information visually. He idly ran his fingers through the sand, pulling four fingers toward him to draw parallel lines. Looking down at the patterns left behind, he had a sudden realization. He could adapt the concept of Morse code—a system he had learned in the Boy Scouts—by extending the dots and dashes vertically to create thin lines and thick lines. By reading these lines with a light source, a machine could instantly decode the information.

[3]
Woodland and Silver patented their "Classifying Apparatus and Method" in $1952$, but the technology required to read the code—including lasers and computers small enough to fit in a store—did not yet exist. It would take more than two decades, and the development of the microchip and helium-neon lasers, before the barcode would make its commercial debut. On June $26$, $1974$, a pack of chewing gum was scanned at a supermarket in Troy, Ohio, marking the birth of a technology that would revolutionize global commerce and logistics.

Suppose the writer's goal had been to write an essay that details the collaborative efforts and equal division of technical labor between Norman Joseph Woodland and Bernard Silver in the commercialization of the barcode. Would this essay successfully fulfill that goal?