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Difficulty: EasyIdentifying Antonym and Contrast Context Clues

Read the following technical maintenance report and use the contrast clue to complete the statement. What word best completes the blank?

Answer:Unlike the abrasive solvent that scratched the delicate protective glass on the sensor units, the newly issued cleaning agent was 【gentle】 and preserved the finished surface. Technicians were directed to discontinue the use of harsh industrial detergents and rely solely on this balanced solution for all future maintenance.

Answer

The correct word to fill the blank is 'gentle' (or acceptable alternatives such as 'mild', 'nonabrasive', or 'safe').
The contrast indicator 'Unlike' establishes an antonym relationship between the two cleaning agents. Since the first solvent is characterized as 'abrasive' because it scratched the glass, the new cleaning agent must have the opposite property—meaning it is 'gentle', 'mild', or 'nonabrasive'—which is reinforced by the fact that it preserved the surface without causing wear.

Step-by-Step Solution

1
Identify the contrast indicator and the initial descriptive trait in the passage.
The opening word 'Unlike' signals a direct contrast between the original cleaner and the newly issued formula. The original cleaner is described as an 'abrasive solvent' that caused scratches.
Contrast signal words establish that the target characteristic in the main clause must express the opposite quality of the referenced item.
2
Determine the antonym of the trait that fits the context of protecting delicate surfaces.
The opposite of 'abrasive' and 'harsh' in the context of surface treatment is 'gentle', 'mild', or 'nonabrasive', which aligns with the fact that the agent preserved the finished surface.
A term conveying a non-damaging, soft, or mild quality completes the logical contrast required by the sentence.

Key Concept

Identifying Antonym and Contrast Context Clues
Estimated Time:45s
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Identifying Antonym and Contrast Context Clues

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