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SAT Reading & Writing: Central Ideas and Details (Drill 1)

Drill 1 · Reading & Writing · Central Ideas and Details

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About This Drill

SAT Reading & Writing: Central Ideas and Details (Drill 1) is a Reading & Writing practice drill covering Central Ideas and Details. It contains 5 original questions created by Brian Stewart, a Barron's test prep author with over 20 years of tutoring experience.

Central Ideas and Details questions ask you to identify the main idea of a text, determine what a text indicates or suggests, or identify a detail that supports a claim. Read the text carefully and focus on what the text actually says rather than what you might infer beyond it.

Questions & Explanations

Text
The following text is adapted from Mark Twain’s 1884 novel Adventures of Huckleberry Finn. Huck describes a thunderstorm he watches from the shelter of a cave on an island. Pretty soon it darkened up, and begun to thunder and lighten; so the birds was right about it. Directly it begun to rain, and it rained like all fury, too, and I never see the wind blow so. It was one of these regular summer storms. It would get so dark that it looked all blue-black outside, and lovely; and the rain would thrash along by so thick that the trees off a little ways looked dim and spider-webby; and here would come a blast of wind that would bend the trees down and turn up the pale underside of the leaves; and then a perfect ripper of a gust would follow along and set the branches to tossing their arms as if they was just wild.

Question 1. Which choice best states the main idea of the text?

  • A) Huck is terrified by a violent storm and struggles to find shelter.
  • B) Huck provides a vivid description of a powerful summer storm he observes from a safe vantage point. ✓
  • C) Huck explains that storms on the river are more dangerous than storms on land.
  • D) Huck recalls the storm primarily to illustrate how unpredictable weather patterns were along the Mississippi.

Explanation: Choice B is the best answer. Huck describes the storm in vivid detail, the darkness, rain, wind, and bending trees, while observing safely from shelter. He calls it ‘lovely,’ suggesting appreciation rather than fear. Choice A misses the mark: Huck is not terrified and already has shelter. Choice C is off because no comparison between river and land storms is made. Choice D doesn't fit: the text describes one specific storm, not weather patterns generally.

Text
Researchers at the University of Exeter have found that bumblebees can learn to solve puzzles by observing other bees. In the study, ‘demonstrator’ bees were trained to open a two-step puzzle box to reach a sugar reward. Untrained bees that watched the demonstrators were more likely to solve the puzzle themselves than bees that had no opportunity to observe. The researchers noted that the puzzle required actions that bees would be unlikely to discover through trial and error alone, suggesting that bees are capable of a form of social learning previously thought to be limited to species with much larger brains.

Question 2. Which choice best states the main idea of the text?

  • A) Bumblebees are more intelligent than most other insect species.
  • B) A study found evidence that bumblebees can learn complex tasks by watching other bees, a capacity not previously attributed to insects with small brains. ✓
  • C) Researchers discovered that bumblebees prefer sugar rewards over other types of food.
  • D) The study demonstrates that bumblebees learn puzzle-solving skills more quickly than any other insect.

Explanation: Choice B is the best answer. The text describes a study in which bees learned to solve a puzzle by observing trained demonstrators, and the researchers concluded this suggests social learning previously thought limited to larger-brained species. Choice A is too broad; the text doesn’t compare bees to all other insects. Choice C doesn't fit: the sugar reward is a detail of the experiment, not the main idea. Choice D is wrong because no comparison to other insect species’ learning speed is made.

Text
The following text is adapted from Charlotte Brontë’s 1847 novel Jane Eyre. The narrator, Jane, describes her feelings upon arriving at Thornfield Hall for the first time. A snug small room; a round table by a cheerful fire; an arm-chair high-backed and old-fashioned, wherein sat the neatest imaginable little elderly lady, in widow’s cap, black silk gown, and snowy muslin apron; exactly like what I had fancied Mrs. Fairfax, only less stately and milder looking. She was occupied in knitting; a large cat sat demurely at her feet. A more reassuring introduction for a new governess could scarcely be conceived; there was no grandeur to overwhelm, no stateliness to embarrass.

Question 3. According to the text, what is true about Jane’s first impression of Mrs. Fairfax?

  • A) Jane is disappointed that Mrs. Fairfax is less grand than she had imagined.
  • B) Jane finds Mrs. Fairfax and her surroundings comfortingly modest and welcoming. ✓
  • C) Jane is surprised that Mrs. Fairfax lives in such a large and elaborate home according to the passage.
  • D) Jane feels intimidated by Mrs. Fairfax’s formal manner.

Explanation: Choice B is the best answer. Jane describes the room as ‘snug’ and ‘cheerful,’ Mrs. Fairfax as ‘milder looking’ than expected, and notes there was ‘no grandeur to overwhelm, no stateliness to embarrass.’ These details convey comfort and welcome. Choice A falls short because jane is reassured, not disappointed. Choice C misses the mark: the room is described as small and cozy. Choice D contradicts the text; Jane specifically notes the absence of anything intimidating.

Text
Marine biologist Camille Jazmin and colleagues have proposed that the decline of large predatory fish in tropical reef ecosystems may be accelerating coral degradation. Their research shows that when predators like groupers and sharks are removed from reefs, populations of smaller herbivore-eating fish increase. This in turn reduces the number of herbivorous fish such as parrotfish, which play a critical role in controlling algae growth on reefs. Without sufficient parrotfish, algae can smother coral, preventing recovery after bleaching events. Jazmin argues that protecting predator populations may therefore be essential to maintaining reef health.

Question 4. Based on the text, what role do parrotfish play in coral reef ecosystems?

  • A) They prey on smaller fish that compete with coral for nutrients.
  • B) They consume algae that would otherwise accumulate on and damage coral. ✓
  • C) They attract large predators that help maintain overall reef biodiversity.
  • D) They accelerate coral growth by depositing minerals on reef surfaces.

Explanation: Choice B is the best answer. The text states that parrotfish play ‘a critical role in controlling algae growth on reefs’ and that without them ‘algae can smother coral.’ This indicates parrotfish consume algae that would otherwise damage coral. Choice A doesn't fit: parrotfish are herbivores, not predators. Choice C is wrong because the text doesn’t say parrotfish attract predators. Choice D doesn't work because the text says nothing about mineral deposits.

Text
The following text is adapted from Fyodor Dostoevsky’s 1866 novel Crime and Punishment (translated by Constance Garnett). Raskolnikov, a former student, wanders through St. Petersburg. The heat in the street was terrible: and the airlessness, the bustle and the plaster, scaffolding, bricks, and dust all about him, and that special Petersburg stench, so familiar to all who are unable to get out of town in summer, all worked painfully upon the young man’s already overwrought nerves. The insufferable stench from the pot-houses, which are particularly numerous in that part of the town, and the drunken men whom he met continually, although it was a working day, completed the revolting misery of the picture.

Question 5. Which choice best states the main idea of the text?

  • A) Raskolnikov is searching the city streets for someone specific but cannot find the person.
  • B) The text depicts Raskolnikov’s surroundings as oppressively unpleasant, reflecting his agitated mental state. ✓
  • C) Raskolnikov is offended by the behavior of the people he encounters on the street.
  • D) The text describes St. Petersburg as a city that is undergoing rapid and exciting modernization, in the author's portrayal.

Explanation: Choice B is the best answer. The passage describes heat, dust, stench, and drunken men, all of which ‘worked painfully upon the young man’s already overwrought nerves.’ The environment mirrors his agitated state. Choice A is incorrect: no search for a person is described. Choice C is too narrow; the drunken men are one detail within a broader depiction of misery. Choice D contradicts the text; the description is of decay and discomfort, not exciting modernization.