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Zorluk: OrtaImplicit Main Idea

Read the passage below:

During World War I, merchant vessels painted in high-contrast geometric patterns of black, white, and blue did not blend into the ocean horizon. Instead, the intersecting diagonal stripes and broken angles distorted the ship's apparent heading, speed, and size when viewed through a submarine's optical periscope. German U-boat commanders had to calculate a vessel's exact course within seconds to aim torpedoes accurately, but the contrasting shapes made it nearly impossible to determine whether a vessel was turning toward or away from an observer.

Which of the following best expresses the author's primary point?

  1. A
    Submarine commanders relied on optical periscopes to calculate torpedo trajectories against merchant vessels.
  2. Geometric paint patterns were designed to disrupt enemy targeting calculations rather than hide vessels from view.Cevap
  3. C
    Early twentieth-century naval warfare depended entirely on visual illusions to ensure maritime dominance.
  4. D
    High-contrast hull designs were quickly phased out because submarine crews adapted to the optical distortion.

Cevap

Geometric paint patterns were designed to disrupt enemy targeting calculations rather than hide vessels from view.
The passage repeatedly emphasizes that the geometric paint did not conceal the ships ('did not blend into the ocean horizon') but instead disrupted the observer's ability to gauge the ship's heading, speed, and size needed to aim torpedoes. Combining these points leads directly to the implicit main idea that the patterns were meant to disrupt targeting calculations rather than conceal the vessel.

Adım Adım Çözüm

1
Analyze each supporting detail in the passage
The text notes that geometric paint patterns did not blend into the sea, distorted a ship's heading/speed, and made aiming torpedoes through periscopes difficult.
Identifying the collective supporting details is necessary to find what common theme links them together.
2
Synthesize the supporting evidence into a single unstated central claim
The author focuses on explaining how the purpose of the paint was optical deception to impair enemy targeting rather than stealth or concealment.
An implicit main idea must encompass all major elements without focusing strictly on a single sentence.
3
Evaluate the answer choices against the synthesized main idea
The option stating that geometric paint patterns were designed to disrupt enemy targeting calculations rather than hide vessels from view captures the full scope accurately.
The correct choice must capture the complete synthesis without being too broad, too narrow, or unsupported.

Anahtar Kavram

Synthesizing an unstated main idea from supporting details in a descriptive or historical passage.
Tahmini Süre:1m 5s
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Konular

Implicit Main Idea

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