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Question

Difficulty: MediumSentence Reordering and Placement

[1] In 1965, chemist Stephanie Kwolek was analyzing a liquid crystal polymer solution to find a lightweight fiber for tires. [2] The resulting mixture was unusually runny and cloudy, prompting other researchers to suggest discarding it. [3] Kwolek, however, believed that the solution had potential and insisted on testing the fluid in a spinneret machine. [4] The machine spun the liquid into a remarkably durable fiber. [5] Today, this material, known as Kevlar, is widely used in bulletproof vests and aerospace engineering.

The writer wants to add the following sentence to the paragraph:

"To her surprise, the spun fiber proved to be five times stronger than steel."

Where should this sentence be placed to make the paragraph most logical?

  1. A
    after Sentence 1
  2. B
    after Sentence 2
  3. C
    after Sentence 3
  4. after Sentence 4Answer

Answer

after Sentence 4
Placing the sentence after Sentence 4 is correct because it links the action of spinning the fiber in Sentence 4 to the properties of the resulting 'spun fiber' mentioned in the target sentence. This also creates a smooth transition to Sentence 5, which discusses the modern applications of the material.

Step-by-Step Solution

1
Analyze the target sentence for logical and grammatical clues.
The target sentence contains the noun phrase 'the spun fiber,' which indicates it must follow a sentence that introduces the concept of the fiber being spun.
Identifying these clues helps determine the chronological order of the narrative.
2
Scan the paragraph to locate where the spinning process and the fiber are first described.
Sentence 4 states that the machine 'spun the liquid into a remarkably durable fiber.'
This establishes the necessary antecedent context for the target sentence's reference to 'the spun fiber.'
3
Evaluate the placement of the target sentence after Sentence 4.
Inserting the target sentence after Sentence 4 naturally flows into Sentence 5, which discusses the modern uses of 'this material' (Kevlar).
This creates a logical transition from the creation of the fiber (Sentence 4), to its surprising strength (the target sentence), and finally to its modern applications (Sentence 5).

Key Concept

Sentence placement relies on locating specific nouns, pronouns, or transition words that connect ideas logically and chronologically.
Estimated Time:1m 0s
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Topics

Sentence Reordering and Placement

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