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
In the passage, the author refers to the photography technique of double exposure primarily to:
- A. Explain that Rodriguez frequently uses that technique to create eerie and distorted representations of city life
- B. Illustrate how Rodriguez's innovative use of double exposure inspired other photographers to do so as well
- C. Provide an example of how Rodriguez explored the tension between his identity as a photographer and as a scholar
- D. Set up a metaphor comparing that technique to the way Rodriguez's work depicts the duality of Los Angeles
Correct Answer & Rationale
Correct Answer: D
The reference to double exposure serves as a metaphor for the duality of Los Angeles, highlighting the complexity and contrasting elements within the city. This choice effectively encapsulates Rodriguez's artistic vision, illustrating how his work reflects both the vibrant and shadowy aspects of urban life. Option A inaccurately suggests a focus on Rodriguez's frequent use of the technique rather than its metaphorical significance. Option B misinterprets the intent, as the passage emphasizes Rodriguez's personal exploration rather than his influence on others. Option C, while relevant, does not capture the primary purpose of the metaphor, which centers on the depiction of duality rather than identity tension.
The reference to double exposure serves as a metaphor for the duality of Los Angeles, highlighting the complexity and contrasting elements within the city. This choice effectively encapsulates Rodriguez's artistic vision, illustrating how his work reflects both the vibrant and shadowy aspects of urban life. Option A inaccurately suggests a focus on Rodriguez's frequent use of the technique rather than its metaphorical significance. Option B misinterprets the intent, as the passage emphasizes Rodriguez's personal exploration rather than his influence on others. Option C, while relevant, does not capture the primary purpose of the metaphor, which centers on the depiction of duality rather than identity tension.
Which choice best replaces the underlined portion in sentence 6 (reproduced below) to suggest that, for a time, people were completely caught up with news of the Leonid meteor shower? In the center of the quilt, the 'falling of the stars' illustrates the hours-long Leonid meteor shower that interested people on November 13, 1833.
- A. affected
- B. enthralled
- C. involved
- D. worried
Correct Answer & Rationale
Correct Answer: B
The term "enthralled" effectively conveys a sense of deep fascination and engagement, suggesting that people were completely captivated by the Leonid meteor shower. Option A, "affected," lacks the intensity and emotional connection implied in the context; it merely indicates a change rather than a strong interest. Option C, "involved," suggests participation but does not capture the sense of wonder that the meteor shower inspired. Option D, "worried," introduces an inappropriate negative connotation, as the context is one of excitement and awe, not concern.
The term "enthralled" effectively conveys a sense of deep fascination and engagement, suggesting that people were completely captivated by the Leonid meteor shower. Option A, "affected," lacks the intensity and emotional connection implied in the context; it merely indicates a change rather than a strong interest. Option C, "involved," suggests participation but does not capture the sense of wonder that the meteor shower inspired. Option D, "worried," introduces an inappropriate negative connotation, as the context is one of excitement and awe, not concern.
In context, which of the following is the best way to revise and combine sentences 1 and 2 (reproduced below)? Sauropods, known today as the largest dinosaurs, were long-necked giants. Their fossils have baffled scientists for decades.
- A. The fossils of sauropods, the long-necked giants who are known today as the largest dinosaurs, have baffled scientists for decades.
- B. Sauropods, long-necked giants, are known today as the largest dinosaurs whose fossils have baffled scientists for decades.
- C. Scientists have been baffled for decades by sauropod fossils; they are known today as the largest dinosaurs, being giants with long necks.
- D. Scientists studying fossils of the giant, long-necked dinosaurs called sauropods have been baffled by the largest dinosaurs known today for decades.
Correct Answer & Rationale
Correct Answer: A
Option A effectively combines the two sentences, maintaining clarity and coherence. It clearly identifies sauropods as long-necked giants and links them directly to their fossils, which have puzzled scientists, all in a single, fluid statement. Option B, while informative, awkwardly positions the phrase "whose fossils" and slightly disrupts the flow. Option C introduces unnecessary complexity with a semicolon and the phrase "being giants," which can confuse the reader. Option D is overly verbose and convoluted, making it less effective in conveying the main ideas succinctly.
Option A effectively combines the two sentences, maintaining clarity and coherence. It clearly identifies sauropods as long-necked giants and links them directly to their fossils, which have puzzled scientists, all in a single, fluid statement. Option B, while informative, awkwardly positions the phrase "whose fossils" and slightly disrupts the flow. Option C introduces unnecessary complexity with a semicolon and the phrase "being giants," which can confuse the reader. Option D is overly verbose and convoluted, making it less effective in conveying the main ideas succinctly.
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.