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Reading & Writing · Expression of Ideas · 86 questions · every one comes with a full explanation.

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  1. 1Samuel Coleridge-Taylor was a prominent classical music composer from England who toured the US three times in the early 1900s. The child of a West African father and an English moEasy · Expression of Ideas
  2. 2In 1968, US Congressman John Conyers introduced a bill to establish a national holiday in honor of Dr. Martin Luther King Jr. The bill didn't make it to a vote, but Conyers was detEasy · Expression of Ideas
  3. 3It has long been thought that humans first crossed a land bridge into the Americas approximately 13,000 years ago. ______ based on radiocarbon dating of samples uncovered in MexicoEasy · Expression of Ideas
  4. 4Researchers believe that pieces of hull found off Oregon's coast are from a Spanish cargo ship that was lost in 1697. Stories passed down among the area's Confederated Tribes of SiEasy · Expression of Ideas
  5. 5Geoscientists have long considered Hawaii's Mauna Loa volcano to be Earth's largest shield volcano by volume, measuring approximately 74,000 cubic kilometers. ______ according to aEasy · Expression of Ideas
  6. 6Before the 1847 introduction of the US postage stamp, the cost of postage was usually paid by the recipient of a letter rather than the sender, and recipients were not always able Easy · Expression of Ideas
  7. 7A potter choosing which type of clay to use for a piece considers two key factors: the desired look of the piece and its intended use. ______ earthenware clay is often used for decEasy · Expression of Ideas
  8. 8In Gothic architecture, flying buttresses are large arches that help support a building's exterior walls. Before the Gothic era, cathedrals' heavy ceilings had to be supported by tEasy · Expression of Ideas
  9. 9Tyrian purple was a highly prized dye among the Phoenicians (an ancient civilization located in present-day Lebanon). The Phoenicians were famous for using this natural dye to coloEasy · Expression of Ideas
  10. 10Etched into Peru's Nazca Desert are line drawings so large that they can only be fully seen from high above. Archaeologists have known of the lines since the 1920s, when a researchEasy · Expression of Ideas
  11. 11Most conifers (trees belonging to the phylum Coniferophyta) are evergreen. That is, they keep their green leaves or needles year-round. However, not all conifer species are evergreEasy · Expression of Ideas
  12. 12Small, flat structures called spatulae are found at the tips of the hairs on a spider's leg. These spatulae temporarily bond with the atoms of whatever they touch. ______ spiders aEasy · Expression of Ideas
  13. 13As a young historian in the 1950s, Alixa Naff began interviewing fellow Arab American immigrants about their experiences straddling two cultures. Over the next few decades, Naff coEasy · Expression of Ideas
  14. 14Neuroscientist Karen Konkoly wanted to determine whether individuals can understand and respond to questions during REM sleep. She first taught volunteers eye movements they would Easy · Expression of Ideas
  15. 15In June, female loggerhead sea turtles will swim back to the sandy beaches where they were born to lay eggs of their own. First, the turtle will dig her nest in the sand. ______ shEasy · Expression of Ideas
  16. 16When Chinese director Chloé Zhao accepted the Oscar in 2021 for her film Nomadland, she made Academy Award history. ______ only one other woman, Kathryn Bigelow of the United StateEasy · Expression of Ideas
  17. 17The envelope-shaped paper bags common in the US 150 years ago were impractical for carrying goods. ______ because they were the only paper bags that could be mass-produced, these bEasy · Expression of Ideas
  18. 18Although novels and poems are considered distinct literary forms, many authors have created hybrid works that incorporate elements of both. Bernardine Evaristo's The Emperor's BabeEasy · Expression of Ideas
  19. 19In studying whether jellyfish sleep, researchers Michael Abrams, Claire Bedbrook, and Ravi Nath attempted to answer three questions. ______ is there a period each day when the pulsEasy · Expression of Ideas
  20. 20Every chemical compound has a spectroscopic fingerprint, a pattern of reflected light unique to that compound. ______ upon analyzing the light reflected by the bright regions on thEasy · Expression of Ideas
  21. 21Practical movie effects, such as the use of actual locations in a film, provide a more realistic visual experience than computer-generated imagery (CGI) does, but giving audiences Easy · Expression of Ideas
  22. 22Chimamanda Ngozi Adichie's 2013 novel Americanah chronicles the divergent experiences of Ifemelu and Obinze, a young Nigerian couple, after high school. Ifemelu moves to the UnitedEasy · Expression of Ideas
  23. 23In the 1850s, William Still was instrumental in helping nearly 1,000 people escape from slavery, earning him the moniker "the Father of the Underground Railroad." ______ despite thEasy · Expression of Ideas
  24. 24In 2018, Kurt Luther and Vikram Mohanty created the web-based tool Civil War Photo Sleuth (CWPS). A user uploading an unknown Civil War soldier's photograph to CWPS first tags the Easy · Expression of Ideas
  25. 25Arkansas aviator Louise Thaden was already a record breaker when she won the inaugural National Women's Air Derby, a race from California to Ohio, in August of 1929. ______ in DeceEasy · Expression of Ideas
  26. 26With darkness falling, a mother elephant loses sight of her calf and wants to make sure it is safe. ______ she releases an infrasonic call for the calf to hear. Infrasonic sound isEasy · Expression of Ideas
  27. 27The number of dark spots that appear on the Sun, known as sunspots, can vary greatly. For example, there were about 180 sunspots in November 2001. ______ there were only about 2 suEasy · Expression of Ideas
  28. 28Organisms have evolved a number of surprising adaptations to ensure their survival in adverse conditions. Tadpole shrimp (Triops longicaudatus) embryos, ______ can pause developmenEasy · Expression of Ideas
  29. 29By 1936, Spanish Romani dancer Carmen Amaya was known all over Spain for her powerful style of flamenco dancing. However, in July of that year, the outbreak of the Spanish Civil WaEasy · Expression of Ideas
  30. 30"O2 Arena," an award-winning science fiction story by Nigerian author Oghenechovwe Donald Ekpeki, takes place in an alternate version of Nigeria where breathable air is a rare commEasy · Expression of Ideas
  31. 31As biologist Terrie Williams has documented, deep dives present a challenge for seals and other marine mammals. A seal must exert enough energy to propel itself hundreds of meters Easy · Expression of Ideas
  32. 32To explore how blinking affects social interactions, Dutch researchers observed interactions between human speakers and "listeners" (animated human faces on a screen). The researchEasy · Expression of Ideas
  33. 33In 1885, Chinese-born California resident Mary Tape became a hero of the Asian American civil rights movement. In January of that year, she won an antidiscrimination case in the CaEasy · Expression of Ideas
  34. 34During a 2021 launch, Rocket Labs' Electron rocket experienced an unexpected failure: its second-stage booster shut down suddenly after ignition. ______ instead of downplaying the Easy · Expression of Ideas
  35. 35In 1891, dancer and choreographer Loie Fuller first performed her celebrated Serpentine Dance, artfully twirling her long, flowing skirt to create striking visual effects. ______ iEasy · Expression of Ideas
  36. 36Phytoplankton play a crucial role in the ocean's uptake of carbon from the atmosphere. When alive, these tiny marine organisms absorb atmospheric carbon via photosynthesis. ______ Easy · Expression of Ideas
  37. 37Riley Black—the author of critically acclaimed books such as My Beloved Brontosaurus (2013)—is best known for writing about dinosaurs, but she has also conducted hands-on fieldworkEasy · Expression of Ideas
  38. 38Laetitia Ky's hair is her art. Inspired by hairstyles from various African tribes, the Ivorian artist uses wire and thread to sculpt her hair into all kinds of shapes. ______ she oEasy · Expression of Ideas