2. 外语
  3. In humans, the pilomotor reflex leads to the response commonly known as goose bumps, and this response is widely considered to b

In humans, the pilomotor reflex leads to the response commonly known as goose bumps, and this response is widely considered to b

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问题 In humans, the pilomotor reflex leads to the response commonly known as goose bumps, and this response is widely considered to be vestigial—that is, something formerly having a greater physiological advantage than at present. It occurs when the tiny muscle at the base of a hair follicle contracts, pulling the hair upright. In animals with feathers, fur, or quills, this creates a layer of insulating warm air or a reason for predators to think twice before attacking. But human hair is too puny to serve these functions. Goose bumps in humans may, however, have acquired a new role. Like flushing—another thermoregulatory(heat-regulating)mechanism—goose bumps have become linked with emotional responses, notably fear, rage, or the pleasure of, say, listening to beautiful music. They may thus serve as a signal to others.
Which of the following best describes the primary function of the next-to-last sentence("Like ... music")?
选项 A、It makes a distinction between two types of mechanisms.
B、It corrects a common misconception about the role of goose bumps in humans.
C、It suggests reasons for the connection between emotional responses and goose bumps in humans.
D、It suggests that flushing and goose bumps signal the same emotional state.
E、It helps explain a possible role played by goose bumps in humans.
答案E
解析 The next-to-last sentence says that goose bumps in humans now serve as an outward sign of strong emotion. If so, this would explain how they could have taken on another role, so Choice E is correct. The sentence does not make a distinction(Choice A), correct a misconception(Choice B), suggest any reason for the connection between emotion and goose bumps(Choice C), or suggest that flushing and goose bumps signal the same state(Choice D).
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