From the earliest times, the complications inherent in deciphering the movements of planets in the night sky must have seemed a curse to baffled astronomers. In the long run, though, they proved a blessing to the development of cosmology, the study of the physical universe. Had the celestial motions been simple, it might have been possible to explain them solely in terms of the simple, poetic tales that had characterized the early cosmologies. Instead, these motions proved to be so intricate and subtle that astronomers could not predict them accurately without eventually coming to terms with the physical reality of how and where the Sun, Moon, and planets actually move in real, three-dimensional space.
The passage indicates that ancient astronomers were 'baffled' because:
- A. Their observations disproved the poetic tales of early cosmologies
- B. They lacked the mathematical sophistication needed to calculate astronomical distances
- C. Their theories of planetary movements were more complicated than the movements themselves
- D. They could not reliably predict observable celestial phenomena
Correct Answer & Rationale
Correct Answer: D
Ancient astronomers were 'baffled' primarily because they struggled to reliably predict observable celestial phenomena. This unpredictability challenged their understanding and led to confusion in their astronomical models. Option A is incorrect as it implies a conflict with poetic tales, which was not the primary concern of astronomers. Option B misrepresents the issue; while mathematical sophistication was limited, the core problem was not solely about calculations. Option C inaccurately suggests that their theories were overly complex; rather, the issue lay in their inability to accurately forecast celestial events, which is the essence of their bafflement.
Ancient astronomers were 'baffled' primarily because they struggled to reliably predict observable celestial phenomena. This unpredictability challenged their understanding and led to confusion in their astronomical models. Option A is incorrect as it implies a conflict with poetic tales, which was not the primary concern of astronomers. Option B misrepresents the issue; while mathematical sophistication was limited, the core problem was not solely about calculations. Option C inaccurately suggests that their theories were overly complex; rather, the issue lay in their inability to accurately forecast celestial events, which is the essence of their bafflement.
Other Related Questions
Which sentence should be deleted because it contains irrelevant information?
- A. Sentence 6
- B. Sentence 7
- C. Sentence 9
- D. Sentence 14
Correct Answer & Rationale
Correct Answer: C
Sentence 9 introduces information that does not directly support the main argument or theme of the passage, making it irrelevant to the central discussion. In contrast, Sentence 6 provides context, Sentence 7 offers a critical example, and Sentence 14 concludes the argument effectively. Each of these sentences contributes meaningfully to the overall coherence and purpose of the text. Removing Sentence 9 enhances clarity by eliminating distractions, allowing the reader to focus on the essential points being made.
Sentence 9 introduces information that does not directly support the main argument or theme of the passage, making it irrelevant to the central discussion. In contrast, Sentence 6 provides context, Sentence 7 offers a critical example, and Sentence 14 concludes the argument effectively. Each of these sentences contributes meaningfully to the overall coherence and purpose of the text. Removing Sentence 9 enhances clarity by eliminating distractions, allowing the reader to focus on the essential points being made.
Which best replaces the word 'appropriate' in sentence 3 (reproduced below)? When chefs and other consumers appropriate local products rather than goods that have been transported across long distances to chain stores, they can enjoy better prices while bettering the local economy.
- A. gain
- B. retrieve
- C. purchase
- D. redeem
Correct Answer & Rationale
Correct Answer: C
In the context of the sentence, "appropriate" conveys the idea of acquiring or buying local products. Option A, "gain," implies obtaining something but lacks the specificity of a transaction, making it less suitable. Option B, "retrieve," suggests taking back something previously owned, which does not fit the context of purchasing local goods. Option D, "redeem," typically refers to exchanging something for a benefit or value, often in a promotional context, which does not align with the intended meaning of acquiring local products. Thus, "purchase" accurately reflects the act of buying local goods.
In the context of the sentence, "appropriate" conveys the idea of acquiring or buying local products. Option A, "gain," implies obtaining something but lacks the specificity of a transaction, making it less suitable. Option B, "retrieve," suggests taking back something previously owned, which does not fit the context of purchasing local goods. Option D, "redeem," typically refers to exchanging something for a benefit or value, often in a promotional context, which does not align with the intended meaning of acquiring local products. Thus, "purchase" accurately reflects the act of buying local goods.
In context, which of the following sentences would be best to insert between sentences 11 and 12 (reproduced below)? By those calculations, it would have taken sauropods a century to reach their full size. A different perspective developed when scientists began to more closely examine various features of sauropod bones.
- A. Like all dinosaurs, sauropods hatched from eggs.
- B. This rather implausible conclusion nonetheless persisted for years.
- C. For decades, sauropods were considered emblematic of the phenomenon of extinction.
- D. Sauropod fossils continue to be discovered in regions spread across the globe.
Correct Answer & Rationale
Correct Answer: B
Option B effectively bridges the gap between the two sentences by highlighting the skepticism surrounding the lengthy growth period of sauropods. It acknowledges the implausibility of the previous conclusion, setting the stage for the subsequent discussion about new scientific insights into sauropod bones. Option A is irrelevant, as it provides basic information about sauropod reproduction that does not relate to their growth or the scientific debate at hand. Option C introduces a different topic—extinction—diverting focus from the growth discussion. Option D, while factual, does not connect to the analysis of growth rates and their implications, making it less suitable for the context.
Option B effectively bridges the gap between the two sentences by highlighting the skepticism surrounding the lengthy growth period of sauropods. It acknowledges the implausibility of the previous conclusion, setting the stage for the subsequent discussion about new scientific insights into sauropod bones. Option A is irrelevant, as it provides basic information about sauropod reproduction that does not relate to their growth or the scientific debate at hand. Option C introduces a different topic—extinction—diverting focus from the growth discussion. Option D, while factual, does not connect to the analysis of growth rates and their implications, making it less suitable for the context.
The writer is considering adding the following sentence to the end of the fourth paragraph: 'Surprisingly, according to The Economist, there were 1.6 million commercial farms in Brazil in 2010.' Should the writer make this addition here?
- A. Yes, because it emphasizes the paragraph's focus on the economic power of large farms.
- B. Yes, because it uses concrete data to provide context about local farms and commercial farms.
- C. No, because it is unrelated to the economic challenges small farms may face.
- D. No, because it fails to show a clear connection to the paragraph's focus on supporting local farms.
Correct Answer & Rationale
Correct Answer: B
Adding the sentence enhances the paragraph by providing concrete data, which helps contextualize the discussion about local and commercial farms. It bridges the gap between the economic landscape and the realities faced by different types of farms, enriching the reader's understanding. Option A misinterprets the focus; while large farms are mentioned, the emphasis is on the economic challenges faced by smaller farms. Option C incorrectly suggests that the data is unrelated; understanding the number of commercial farms is essential to discussing the economic landscape. Option D overlooks that the data can indeed support a broader discussion about local farms by contrasting them with commercial operations.
Adding the sentence enhances the paragraph by providing concrete data, which helps contextualize the discussion about local and commercial farms. It bridges the gap between the economic landscape and the realities faced by different types of farms, enriching the reader's understanding. Option A misinterprets the focus; while large farms are mentioned, the emphasis is on the economic challenges faced by smaller farms. Option C incorrectly suggests that the data is unrelated; understanding the number of commercial farms is essential to discussing the economic landscape. Option D overlooks that the data can indeed support a broader discussion about local farms by contrasting them with commercial operations.