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Difficulty: MediumWords in Context: High-Utility Vocabulary

Which word completes the text with the most logical and precise meaning?

Answer:For decades, planetary scientists assumed that the surface of the dwarf planet Ceres was completely dry and geologically inert. However, recent data from the Dawn spacecraft revealed localized deposits of bright sodium carbonate, suggesting that briny water from a subsurface reservoir had erupted onto the surface. This discovery has forced researchers to revise their initial models of the dwarf planet's history, indicating that Ceres's geological activity is far more 【dynamic】 than previously believed.

Answer

dynamic
The correct word must describe Ceres's geological activity as ongoing or changing, directly contrasting with the previous belief that the dwarf planet was 'geologically inert.' Words like 'dynamic' or 'active' logically and precisely fit this context.

Step-by-Step Solution

1
Analyze the context clues in the passage.
The passage contrasts the traditional view of Ceres as 'geologically inert' (inactive) with new evidence showing eruptions from a subsurface reservoir.
Identifying semantic contrast helps determine the required meaning for the blank.
2
Identify a high-utility academic word that completes the contrast.
The word must mean the opposite of 'inert' to describe active geological processes, such as 'dynamic' or 'active'.
This completes the logical transition from assuming the planet is inert to recognizing its ongoing activity.

Key Concept

Using context clues to determine the precise meaning of high-utility academic words.
Estimated Time:1m 0s
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Topics

Words in Context: High-Utility Vocabulary

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