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 is the best version of the underlined portion of sentence 6 (reproduced below)? More recent discoveries of sauropod fossils in locations around the world have confirmed that these resilient animals, did indeed walk the earth for millions of years.
- A. (as it is now)
- B. that, these resilient animals
- C. that these resilient animals.
- D. that these resilient animals
Correct Answer & Rationale
Correct Answer: D
Option D is the best choice as it eliminates unnecessary punctuation, creating a smooth and grammatically correct sentence. The phrase "that these resilient animals" flows naturally and maintains clarity. Option A retains the comma, which incorrectly separates the subject from the verb, leading to a fragmented structure. Option B includes an unnecessary comma after "that," disrupting the sentence's flow. Option C, while similar to D, incorrectly ends with a period, making it incomplete and affecting the overall coherence of the sentence.
Option D is the best choice as it eliminates unnecessary punctuation, creating a smooth and grammatically correct sentence. The phrase "that these resilient animals" flows naturally and maintains clarity. Option A retains the comma, which incorrectly separates the subject from the verb, leading to a fragmented structure. Option B includes an unnecessary comma after "that," disrupting the sentence's flow. Option C, while similar to D, incorrectly ends with a period, making it incomplete and affecting the overall coherence of the sentence.
In context, the metaphor in the third sentence ('it was... years') chiefly serves to:
- A. Call attention to the age of the United States as a nation
- B. Question the literary value of the writings by Lewis and Clark
- C. Trivialize the accomplishments of the Lewis and Clark expedition
- D. Place the Lewis and Clark expedition into a broad context
Correct Answer & Rationale
Correct Answer: D
The metaphor in the third sentence effectively places the Lewis and Clark expedition within a broader historical and cultural context, emphasizing its significance in relation to the age of the nation and its development. Option A, while related to the age of the United States, does not capture the metaphor's broader implications. Option B misinterprets the metaphor, as it does not question literary value but rather highlights historical importance. Option C inaccurately suggests that the metaphor diminishes the expedition’s achievements, whereas it actually elevates their significance by situating them within a larger narrative.
The metaphor in the third sentence effectively places the Lewis and Clark expedition within a broader historical and cultural context, emphasizing its significance in relation to the age of the nation and its development. Option A, while related to the age of the United States, does not capture the metaphor's broader implications. Option B misinterprets the metaphor, as it does not question literary value but rather highlights historical importance. Option C inaccurately suggests that the metaphor diminishes the expedition’s achievements, whereas it actually elevates their significance by situating them within a larger narrative.
Which is the best version of the underlined portion of sentence 5 (reproduced below)? However, the fossil evidence suggested that sauropods will have existed, on land, for quite a long time.
- A. (as it is now)
- B. exist,
- C. existed,
- D. will exist.
Correct Answer & Rationale
Correct Answer: C
The choice "existed" accurately reflects the past tense required by the context, indicating that the fossil evidence pertains to a time when sauropods were already present on Earth. Option A, retaining the original phrasing, incorrectly uses "will have existed," which suggests a future perfect tense that does not align with the historical nature of fossil evidence. Option B, "exist," shifts to present tense, failing to convey the past timeframe relevant to the fossils. Option D, "will exist," also implies a future occurrence, which is inconsistent with the established fact that sauropods are known to have lived in the past.
The choice "existed" accurately reflects the past tense required by the context, indicating that the fossil evidence pertains to a time when sauropods were already present on Earth. Option A, retaining the original phrasing, incorrectly uses "will have existed," which suggests a future perfect tense that does not align with the historical nature of fossil evidence. Option B, "exist," shifts to present tense, failing to convey the past timeframe relevant to the fossils. Option D, "will exist," also implies a future occurrence, which is inconsistent with the established fact that sauropods are known to have lived in the past.
In context, which is the best version of sentence 1 (reproduced below)? Federico Garcia Lorca was 20th-century Spain’s most famous poet and playwright.
- A. [as it is now]
- B. Federico GarcÃa Lorca, was 20th-century Spain's most famous poet and playwright.
- C. Federico GarcÃa Lorca was, 20th-century Spain's, most famous poet and playwright.
- D. Federico GarcÃa Lorca was 20th-century Spain's, most famous poet and playwright.
Correct Answer & Rationale
Correct Answer: A
Option A maintains clarity and grammatical correctness without unnecessary punctuation. It presents Federico Garcia Lorca's identity straightforwardly, enhancing readability. Option B incorrectly places a comma after "García Lorca," which disrupts the flow of the sentence. Option C misuses commas, creating awkward pauses that confuse the reader and detract from the sentence's coherence. Option D also misplaces a comma after "Spain's," which incorrectly separates the subject from its complement, leading to a fragmented thought. Thus, option A stands out as the most effective choice.
Option A maintains clarity and grammatical correctness without unnecessary punctuation. It presents Federico Garcia Lorca's identity straightforwardly, enhancing readability. Option B incorrectly places a comma after "García Lorca," which disrupts the flow of the sentence. Option C misuses commas, creating awkward pauses that confuse the reader and detract from the sentence's coherence. Option D also misplaces a comma after "Spain's," which incorrectly separates the subject from its complement, leading to a fragmented thought. Thus, option A stands out as the most effective choice.