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Zorluk: ZorValidating Sentence Coherence and Pair Equivalence

Though early environmental impact models predicted that the newly introduced wetland grass would prove a ________ influence on native marsh biodiversity, recent field studies reveal that its dense root mats actually buffer vulnerable shorelines against extreme erosion.

Select the TWO answer choices that, when inserted into the sentence, produce completed sentences that are equivalent in meaning.

  1. deleteriousCevap
  2. perniciousCevap
  3. C
    salutary
  4. D
    benign
  5. E
    ubiquitous
  6. F
    ephemeral

Cevap

The choices 'deleterious' and 'pernicious' are the correct options.
The sentence begins with the concession marker 'Though', indicating a contrast between early predictions and recent empirical findings. Since the recent findings show a positive result ('buffer vulnerable shorelines against extreme erosion'), the prediction must have been negative. The words 'deleterious' and 'pernicious' both mean harmful or injurious. Substituting either word creates logically coherent and semantically equivalent sentences.

Adım Adım Çözüm

1
Analyze structural contrast clues in the sentence stem
The concession signal 'Though... predicted' indicates that the prediction about the wetland grass contrasts with the actual positive finding ('buffer vulnerable shorelines against extreme erosion').
Understanding overall sentence polarity is essential for identifying the required word valence for the blank.
2
Determine the required contextual meaning of the blank
The blank requires a word meaning 'harmful' or 'damaging' so that the initial negative prediction logically contrasts with the beneficial actual result.
Establishing the precise definition target ensures accurate selection of both contextually fitting words and valid synonym pairs.
3
Evaluate choices for contextual fit and semantic equivalence
Both 'deleterious' and 'pernicious' mean harmful or destructive, completing two sentences with identical coherent meanings.
GRE Sentence Equivalence requires choosing two options that satisfy both context logic and mutual synonymy.

Anahtar Kavram

Validating Sentence Coherence and Pair Equivalence
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