Read the passage below and then choose the best answer to each question. Answer the questions on the basis of what is stated or implied in the passage.
Passage
Today's ubiquitous red-yellow-green electric traffic light, familiar to drivers worldwide, had its origins in train signals from the 1800s. These early signals all used red to signify "stop," but the choice and arrangement of the other two colors would surprise today's drivers: green was the color for "caution," and white was the color for "go." However, white proved to be a poor choice, because the red and green lights train engineers saw were produced by red and green filters covering white light bulbs (the "go" light had a clear filter). If a filter was broken or missing, the signal would appear as white and engineers might mistake "stop" or "caution" for "go," especially at night.
What does the passage suggest about the light bulbs used in the first train signaling systems?
- A. They were very fragile.
- B. They were all the same color.
- C. They were only illuminated at night.
- D. They were also used to signal automobile drivers.
Correct Answer & Rationale
Correct Answer: B
The passage indicates that the light bulbs in the first train signaling systems were designed to emit a specific color to convey signals, suggesting uniformity in color for clarity and safety. Option A is incorrect as the passage does not mention the fragility of the bulbs. Option C is misleading; while the bulbs may have been primarily used at night, the passage does not explicitly state that they were only illuminated then. Option D is also incorrect; the passage focuses on train signaling without reference to their use for automobile drivers. Thus, the emphasis on color highlights the importance of consistent signaling in train operations.
The passage indicates that the light bulbs in the first train signaling systems were designed to emit a specific color to convey signals, suggesting uniformity in color for clarity and safety. Option A is incorrect as the passage does not mention the fragility of the bulbs. Option C is misleading; while the bulbs may have been primarily used at night, the passage does not explicitly state that they were only illuminated then. Option D is also incorrect; the passage focuses on train signaling without reference to their use for automobile drivers. Thus, the emphasis on color highlights the importance of consistent signaling in train operations.
Other Related Questions
The passage is mainly discussing the Mississippi River's
- A. depth
- B. length
- C. width
- D. location
Correct Answer & Rationale
Correct Answer: C
The passage primarily focuses on the Mississippi River's width, detailing its varying measurements at different points along its course. This emphasis on width highlights its significance in navigation and ecology. Option A, depth, is not the main topic; while depth may be mentioned, it does not receive the same level of attention. Option B, length, is also a lesser focus, as the passage does not delve into the river's overall distance. Option D, location, is addressed but serves more as context rather than the central theme. Thus, width emerges as the key aspect discussed in the passage.
The passage primarily focuses on the Mississippi River's width, detailing its varying measurements at different points along its course. This emphasis on width highlights its significance in navigation and ecology. Option A, depth, is not the main topic; while depth may be mentioned, it does not receive the same level of attention. Option B, length, is also a lesser focus, as the passage does not delve into the river's overall distance. Option D, location, is addressed but serves more as context rather than the central theme. Thus, width emerges as the key aspect discussed in the passage.
The following sentence would best fit immediately after which sentence in the second paragraph (sentences 3-6)? Meanwhile, the robots' eye and body movements mimic those of the human visitors they represent.
- A. Sentence 3
- B. Sentence 4
- C. Sentence 5
- D. Sentence 6
Correct Answer & Rationale
Correct Answer: C
The sentence about the robots’ eye and body movements aligns best with Sentence 5, which likely discusses how these movements enhance the interaction between robots and human visitors. This connection emphasizes the purpose of mimicking human behavior. Sentence 3 may introduce the robots but does not specifically relate to their movements. Sentence 4 might focus on a different aspect of the robots, such as their design or functionality, which doesn’t directly connect to the mimicry. Sentence 6 may conclude the paragraph, making it less suitable for introducing a detailed observation about movements. Thus, Sentence 5 provides the most relevant context for the new information.
The sentence about the robots’ eye and body movements aligns best with Sentence 5, which likely discusses how these movements enhance the interaction between robots and human visitors. This connection emphasizes the purpose of mimicking human behavior. Sentence 3 may introduce the robots but does not specifically relate to their movements. Sentence 4 might focus on a different aspect of the robots, such as their design or functionality, which doesn’t directly connect to the mimicry. Sentence 6 may conclude the paragraph, making it less suitable for introducing a detailed observation about movements. Thus, Sentence 5 provides the most relevant context for the new information.
Why does the author mention that only men signed the Mayflower Compact?
- A. To show the similarities between the Compact and the Constitution
- B. To suggest that the Compact was not a perfect model of government
- C. To indicate that men were better lawmakers than women
- D. To imply that only men were on board the Mayflower
Correct Answer & Rationale
Correct Answer: B
The mention of only men signing the Mayflower Compact highlights the limitations of this early governance document, suggesting it was not a perfect model of government. It reflects the societal norms of the time, where women's voices were excluded from formal political processes, indicating a lack of representation. Option A incorrectly suggests a direct comparison with the Constitution, which is not the focus. Option C perpetuates a gender bias that is not supported by the text. Option D misinterprets the context; while only men signed, it does not imply that only men were aboard the Mayflower, as historical records show women were present as well.
The mention of only men signing the Mayflower Compact highlights the limitations of this early governance document, suggesting it was not a perfect model of government. It reflects the societal norms of the time, where women's voices were excluded from formal political processes, indicating a lack of representation. Option A incorrectly suggests a direct comparison with the Constitution, which is not the focus. Option C perpetuates a gender bias that is not supported by the text. Option D misinterprets the context; while only men signed, it does not imply that only men were aboard the Mayflower, as historical records show women were present as well.
The passage implies that the true cause of the bridge collapse was
- A. low-quality materials
- B. short-sighted design
- C. substandard craftsmanship
- D. unexpectedly high winds
Correct Answer & Rationale
Correct Answer: B
The passage suggests that the bridge collapse stemmed from a fundamental flaw in its design, indicating that the planning and engineering did not adequately account for structural integrity. Option A, low-quality materials, implies that the materials used were inferior, but the passage does not emphasize material quality as the primary issue. Option C, substandard craftsmanship, points to poor construction practices, yet the focus of the passage leans more toward design deficiencies rather than execution. Option D, unexpectedly high winds, suggests an external factor causing the collapse, but the passage attributes the failure to inherent design shortcomings rather than environmental conditions.
The passage suggests that the bridge collapse stemmed from a fundamental flaw in its design, indicating that the planning and engineering did not adequately account for structural integrity. Option A, low-quality materials, implies that the materials used were inferior, but the passage does not emphasize material quality as the primary issue. Option C, substandard craftsmanship, points to poor construction practices, yet the focus of the passage leans more toward design deficiencies rather than execution. Option D, unexpectedly high winds, suggests an external factor causing the collapse, but the passage attributes the failure to inherent design shortcomings rather than environmental conditions.