CogAT Form 7 study materials
CogAT Form 7 study resources

Two-Blank Sentence Completion: Contrast and Semantic Fit

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Two-Blank Sentence Completion: Contrast and Semantic Fit

At a middle-school reading group, four students compare answers to a two-blank sentence-completion item. The sentence reads: “Although the reviewer described the novel’s structure as ___, she conceded that the plot’s ___ made the book difficult to abandon.” The choices are (A) conventional … predictability, (B) convoluted … momentum, (C) elegant … tedium, and (D) disjointed … inertia. Priya chooses D, explaining that “disjointed” is negative and “inertia” means the book keeps moving, so the two halves contrast. Marcus chooses B but cannot say why “momentum” fits better than “inertia.” The teacher wants the group to justify the answer from the contrast signal and the second clause’s outcome, not just from word charge. A fifth student asks whether “although” could be read as simple concession rather than contrast.

1. Which choice is best? Build the argument from the contrast signal, the second clause, and the meaning of each second-blank candidate.

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B is best. The signal although sets up a contrast between the reviewer’s view of the structure and the effect of the plot. The second clause says the plot made the book difficult to abandon, so the plot must be gripping or propulsive. Convoluted fits a structure a reviewer would criticize; momentum fits a plot that pulls a reader forward.

Test the others. A gives a neutral or positive structure and a plot quality that would make the book easy to predict, not hard to put down. C’s tedium would make the book easy to abandon, contradicting the clause. D’s disjointed fits the negative first blank, but inertia means sluggishness or resistance to change or motion, not forward drive; a book with inertia would be hard to start, not hard to abandon. Priya has confused inertia with momentum. The answer must satisfy both blanks and the causal verb made.

2. Priya argues that 'inertia' means unstoppable forward motion. Identify the semantic error and the single clue that most directly rules out D.

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Priya is importing a physics speciality. In physics, inertia is resistance to a change in motion, and an object in motion stays in motion unless acted on. But the everyday meaning tested here is sluggishness or lack of active movement. The direct clue is difficult to abandon: a plot with inertia would not supply the pull that makes a reader reluctant to stop. Even if one stretched inertia to mean continued motion, the first blank disjointed would still be weaker than convoluted with momentum because the sentence attributes the difficulty to the plot’s quality, not to the reader’s resistance. The best clue is the outcome phrase, not the word charge of the first blank.

3. If the second clause were changed to 'made the book easy to set aside,' which choice would become strongest, and what would happen to Marcus's choice?

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C would become strongest: Although the structure is elegant, the plot’s tedium makes the book easy to set aside. The contrast is between an admired structure and a disengaging plot. B would fail because momentum would then contradict easy to set aside. D still fails because inertia would not directly explain ease of abandonment; it could suggest sluggishness, but tedium is the precise cause. This change shows that the second blank is controlled by the consequence clause, not by the first blank alone. A test-taker should always ask what effect the sentence says the second noun had.