Form, Structure, and Sense Lv Medium (Part1)

After winning the 1860 presidential election, Abraham Lincoln appointed Edward Bates, Salmon P. Chase, and William H. Seward to his cabinet. Lincoln’s decision was surprising, since each of these men had run against him, but historians have praised it, noting that Lincoln ______ his rivals’ diverse talents to strengthen his administration.

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Because a cycle of lunar phases ______ 29.5 days to complete, it’s possible to observe two full moons in a single month, one at the beginning and one at the end.

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A pioneer in the field of taphonomy (the study of how organic remains become fossils), ______ may be just as prevalent in the fossil record as those of thick-shelled organisms.

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On April 5, 1977, Kitty Cone and 150 other disability rights activists entered a San Francisco federal building. After pleading for years—to no effect—for the passage of key antidiscrimination legislation, ______ until their demands were addressed. Finally, on April 28, the legislation was signed.

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Bonnie Buratti of NASA’s Jet Propulsion Laboratory ______ data about Saturn’s rings collected by the Cassini spacecraft when she made an interesting discovery: the tiny moons embedded between and within Saturn’s rings are shaped by the buildup of ring material on the moons’ surfaces.

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Professional American football player Fred Cox invented one of the world’s most popular toys. In the 1970s, he came up with the idea for the Nerf football, which ______ of the harder and heavier regulation football.

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Classical composer Florence Price’s 1927 move to Chicago marked a turning point in her career. It was there that Price premiered her First Symphony—a piece that was praised for blending traditional Romantic motifs with aspects of Black folk music—and ______ supportive relationships with other Black artists.

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In the 1950s, a man named Joseph McVicker was struggling to keep his business afloat when his sister-in-law Kay Zufall advised him to repurpose the company’s product, a nontoxic, clay-like substance for removing soot from wallpaper, as a modeling putty for kids. In addition, Zufall ______ selling the product under a child-friendly name: Play-Doh.

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In 1966, Emmett Ashford became the first African American to umpire a Major League Baseball game. His energetic gestures announcing when a player had struck out and his habit of barreling after a hit ball to see if it would land out of ______ transform the traditionally solemn umpire role into a dynamic one.

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African American Percy Julian was a scientist and entrepreneur whose work helped people around the world to see. Named in 1999 as one of the greatest achievements by a US chemist in the past hundred years, ______ led to the first mass-produced treatment for glaucoma.

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Far from being modern inventions, ______ more than 5,000 years ago.

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Cheng Dang and her colleagues at the University of Washington recently ran simulations to determine the extent to which individual snow ______ affect the amount of light reflecting off a snowy surface.

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In Death Valley National Park’s Racetrack Playa, a flat, dry lakebed, are 162 rocks—some weighing less than a pound but others almost 700 pounds—that move periodically from place to place, seemingly of their own volition. Racetrack-like trails in the ______ mysterious migration.

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The human brain is primed to recognize faces—so much so that, due to a perceptual tendency called pareidolia, ______ will even find faces in clouds, wooden doors, pieces of fruit, and other faceless inanimate objects. Researcher Susan Magsamen has focused her work on better understanding this everyday phenomenon.

Which choice completes the text so that it conforms to the conventions of Standard English?