How did Hedy Lamarr contribute significantly to the advancement of technology?

Correct Answer: D

Rationale: The correct answer is D because Hedy Lamarr's invention of a frequency-hopping system, along with George Antheil, laid the foundation for technologies like cellular phones, Bluetooth, and Wi-Fi. This significant contribution revolutionized communication technology. Choice A is incorrect because it focuses on the limitations of the era's technology rather than Lamarr's contributions. Choice B is incorrect as it briefly mentions her collaboration but does not directly relate it to technological advancements. Choice C is incorrect as it highlights her failed inventions, which are not indicative of her significant contributions to technology.

Correct Answer: B

Rationale: The statement that rested people have better impulse control supports the claim that napping during the workday can lead to employees being happier, healthier, and more productive. Improved impulse control can result in better decision-making, including choosing nutritious food over junk food, which contributes to overall well-being and productivity. Choices A, C, and D do not directly address the relationship between napping and improved well-being or productivity, making them less relevant to supporting the claim.

Correct Answer: C

Rationale: The author's tone in the passage is informal. The passage provides a narrative about Hedy Lamarr's life and inventions, offering insights into her challenges and achievements in a conversational manner. The use of phrases like 'To relieve this boredom' and 'Just think, we might not have any of those things' indicates a casual and engaging tone, suitable for storytelling. Choice A, 'Sarcastic,' is incorrect as there is no evident use of sarcasm or irony in the passage. Choice B, 'Formal,' is incorrect because the tone is not stiff or ceremonious; instead, it is relaxed and personal. Choice D, 'Scientific,' is also incorrect as the tone is not focused on presenting technical information or research findings but rather on sharing a personal story.

Correct Answer: D

Rationale: One of Hedy Lamarr's notable inventions was the frequency-hopping system, which she developed during World War II to secure radio-controlled torpedoes. This system changed frequencies to prevent jamming by enemies. Lamarr's frequency-hopping technology laid the groundwork for modern technologies like cell phones, Bluetooth, and WiFi. Choices A and B are mentioned as some of Lamarr's failed inventions in the passage. Choice C refers to the military technology that inspired Lamarr's invention, not her invention itself.

Correct Answer: A

Rationale: The exhaustive description of Eleanor Roosevelt's activities during the war in the Pacific showcases her dedication and compassion towards the troops and wounded. She tirelessly visited multiple Islands, inspected hospitals, delivered speeches, attended receptions, and interacted with convalescing officers and patients. Her efforts to lift spirits, boost morale, and personally connect with the wounded illustrate her as a dedicated and compassionate individual. The other choices are incorrect as there is no mention of her being a military strategist, a commander of troops, or a professional athlete in the provided details.