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题目

Sleep insufficiency makes people extra prone to illness and infection because _______. A. it leaves people with reduced immunityB. people do not realize the health issues associated with insufficient sleepC. it always causes high blood pressureD. the all-natural healing process of sleep is essential

Sleep insufficiency makes people extra prone to illness and infection because _______.

  • A. it leaves people with reduced immunity
  • B. people do not realize the health issues associated with insufficient sleep
  • C. it always causes high blood pressure
  • D. the all-natural healing process of sleep is essential

题目解答

答案

### 解析 这道题目考察的是睡眠不足对健康的影响,特别是它如何增加人们患病和感染的风险。我们需要仔细分析每个选项,找出最合理的解释。 1. **选项A: it leaves people with reduced immunity** - **解析**: 睡眠不足会影响免疫系统的功能,导致免疫力下降。当人体的免疫力下降时,就更容易受到病毒和细菌的侵袭,从而增加患病和感染的风险。这是一个直接且科学的解释。 2. **选项B: people do not realize the health issues associated with insufficient sleep** - **解析**: 虽然人们可能不完全了解睡眠不足的健康问题,但这并不是导致他们更容易患病和感染的直接原因。这个选项更多是关于意识和认知,而不是生理机制。 3. **选项C: it always causes high blood pressure** - **解析**: 睡眠不足确实可能与高血压有关,但高血压并不是直接导致人们更容易患病和感染的主要原因。高血压主要影响心血管系统,而不是免疫系统。 4. **选项D: the all-natural healing process of sleep is essential** - **解析**: 睡眠确实是一个自然的愈合过程,对身体的恢复和修复非常重要。然而,这个选项比较笼统,没有具体说明为什么睡眠不足会增加患病和感染的风险。 ### 结论 综合以上分析,选项A是最直接和科学的解释。睡眠不足会导致免疫力下降,从而使人们更容易患病和感染。 ### 答案 **A. it leaves people with reduced immunity**

解析

本题考查睡眠不足对健康的影响,核心在于理解睡眠与免疫系统的关系。题目要求选择最直接、科学的解释。关键点在于明确睡眠不足如何削弱身体防御机制,从而增加患病风险。需注意选项中可能存在的干扰项,如意识问题或间接影响(如高血压),而非直接生理机制。

选项分析:

  1. 选项A(免疫力下降):
    睡眠不足会直接影响免疫系统功能,导致身体对病毒、细菌的抵抗力下降。这是医学研究中已证实的直接原因,符合题干逻辑。
  2. 选项B(意识不足):
    虽然人们对睡眠健康的认识不足可能引发问题,但“意识不到”本身并非导致患病的直接原因,属于间接因素。
  3. 选项C(高血压):
    高血压是睡眠不足的潜在后果之一,但与感染风险无直接关联,且“always”(总是)表述过于绝对。
  4. 选项D(自然愈合过程):
    虽然睡眠对修复重要,但选项未明确说明如何导致感染风险增加,表述笼统。

结论:选项A最直接、科学地解释了睡眠不足与易感染之间的因果关系。

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