题目

Passage 2Do you sleep between seven to nine hours per night? According to the experts, this is the amount needed, on average, to keep our minds alert and our bodies healthy — but many people aren't getting enough.In the United States, for example, half the population sleeps less than seven hours during the week, according to the 2013 International Bedroom Poll. To make up, many of them resort to catching up when circumstances allow — whether it's sleeping in at the weekend or napping during the day. But this catch-up can have its own impact on your body and when this catch-up becomes too much, it could even be a sign of a hidden health problem.The much-loved weekend snooze (小睡) stems from the need to catch up on sleep lost during the week. "That's an attempt to pay back sleep deprivation," says Charles Czeisler, chief of the Division of Sleep and Circadian Disorders at the Brigham and Women's Hospital, in Boston. But Czeisler is not an advocate of sleeping late at the weekend. He calls it "sleep binging (放纵)" and says it's a break from consistency that leads to further disruption of our sleep cycles.The extra hours of sleep, but more importantly the later time of awakening, at the weekend, lead to confusion in the body when people return to their weekday routine — something Czeisler defines as "social jet lag.""If you're getting up at 6 am and then noon, that's the equivalent of Boston to Paris in time zones," he says. Making a habit of this is not a healthy lifestyle to lead, according to Czeisler. "This has adverse health consequences ... it's better to have consistency of sleep," he says.It's worth paying attention to the hours you spend sleeping, and in bed, as a means of monitoring and maintaining your health and well-being. "Duration, timing and quality of sleep are the key factors," says Czeisler.More studies are needed to truly understand the causes of the links seen between excessive sleep and various health conditions, but for the time being it may be wise to avoid those weekend binges and instead inject some routine into your dreams.(1) (单选题)According to the experts, how many sleeping hours are considered to be unhealthy per night?A.Six hours.B.Seven hours.C.Eight hours.D.Nine hours.(2) (单选题)Why do many Americans love to sleep late at the weekend?A.Because they want to live a healthy life.B.ecause they want to keep consistency of sleep.C.Because they want to better prepare for the work in the following week.D.Because they want to make up for the sleeping time lost in previous days.(3) (单选题)What does Czeisler mean by saying "social jet lag" in Para. 4?A.Confusion resulting from a long-distance airplane travel.B.Tiredness resulting from the lack of sleep in the weekday.C.Discomfort resulting from changes of sleeping patterns.D.Social stress related to the weekday routine.(4) (单选题)According to the passage, what might be considered as a healthy sleeping habit?A.Sleep late at the weekend.B.Having a nap at noon.C.Sleeping more than eight hours per night.D.Having a regular sleep pattern.(5) (单选题)What do we learn about sleep fron this passage?A.The sleep quality is more important than the time.B.The more we sleep, the healthier we will be.C.A frequent desire to sleep late could be a sign of a health problem.D.Most people have satisfactory sleep during the weekday and the weekend.A. ①③B. ①④C. ②③D. ②④

Passage 2Do you sleep between seven to nine hours per night? According to the experts, this is the amount needed, on average, to keep our minds alert and our bodies healthy — but many people aren't getting enough.In the United States, for example, half the population sleeps less than seven hours during the week, according to the 2013 International Bedroom Poll. To make up, many of them resort to catching up when circumstances allow — whether it's sleeping in at the weekend or napping during the day. But this catch-up can have its own impact on your body and when this catch-up becomes too much, it could even be a sign of a hidden health problem.The much-loved weekend snooze (小睡) stems from the need to catch up on sleep lost during the week. "That's an attempt to pay back sleep deprivation," says Charles Czeisler, chief of the Division of Sleep and Circadian Disorders at the Brigham and Women's Hospital, in Boston. But Czeisler is not an advocate of sleeping late at the weekend. He calls it "sleep binging (放纵)" and says it's a break from consistency that leads to further disruption of our sleep cycles.The extra hours of sleep, but more importantly the later time of awakening, at the weekend, lead to confusion in the body when people return to their weekday routine — something Czeisler defines as "social jet lag.""If you're getting up at 6 am and then noon, that's the equivalent of Boston to Paris in time zones," he says. Making a habit of this is not a healthy lifestyle to lead, according to Czeisler. "This has adverse health consequences ... it's better to have consistency of sleep," he says.It's worth paying attention to the hours you spend sleeping, and in bed, as a means of monitoring and maintaining your health and well-being. "Duration, timing and quality of sleep are the key factors," says Czeisler.More studies are needed to truly understand the causes of the links seen between excessive sleep and various health conditions, but for the time being it may be wise to avoid those weekend binges and instead inject some routine into your dreams.(1) (单选题)According to the experts, how many sleeping hours are considered to be unhealthy per night?A.Six hours.B.Seven hours.C.Eight hours.D.Nine hours.(2) (单选题)Why do many Americans love to sleep late at the weekend?A.Because they want to live a healthy life.B.ecause they want to keep consistency of sleep.C.Because they want to better prepare for the work in the following week.D.Because they want to make up for the sleeping time lost in previous days.(3) (单选题)What does Czeisler mean by saying "social jet lag" in Para. 4?A.Confusion resulting from a long-distance airplane travel.B.Tiredness resulting from the lack of sleep in the weekday.C.Discomfort resulting from changes of sleeping patterns.D.Social stress related to the weekday routine.(4) (单选题)According to the passage, what might be considered as a healthy sleeping habit?A.Sleep late at the weekend.B.Having a nap at noon.C.Sleeping more than eight hours per night.D.Having a regular sleep pattern.(5) (单选题)What do we learn about sleep fron this passage?A.The sleep quality is more important than the time.B.The more we sleep, the healthier we will be.C.A frequent desire to sleep late could be a sign of a health problem.D.Most people have satisfactory sleep during the weekday and the weekend.
  • A. ①③
  • B. ①④
  • C. ②③
  • D. ②④

题目解答

答案

1、A2、D3、C4、D5、C

解析

整体考察内容

本文围绕睡眠健康展开，涉及专家建议的健康睡眠时间、周末补觉的影响、“社会时差”的定义及健康睡眠习惯等知识点，主要考查对文章细节的理解和信息提取能力。

题目1解析

问题：根据专家观点，每晚多少小时睡眠被认为不健康？
关键信息：文章首段明确提到“this is the amount needed, on average, to keep our minds alert and our bodies healthy — but many people aren't getting enough”，其中“this amount”指前一句的“seven to nine hours per night”。选项A（6小时）低于此范围，属于“不够”，即不健康；B（7小时）、D（9小时）是健康范围，C（8小时）也在健康区间内。
答案：A

题目2解析

问题：为何许多美国人喜欢周末睡懒觉？
关键信息：第三段首句“The much-loved weekend snooze stems from the need to catch up on sleep lost during the week.”直接说明周末补觉是为了弥补工作日丢失的睡眠。选项D（弥补前几天丢失的睡眠时间）完全匹配；A（健康生活）与后文Czeisler反对“sleep binging”矛盾；B（保持睡眠一致性）是Czeisler建议的，而非美国人的目的；C（为下周工作做准备）文中未提及。
答案：D

题目3解析

问题：Czeisler所说的“social jet lag”是什么意思？
关键信息：第四段提到“The extra hours... lead to confusion in the body when people return to their weekday routine — something Czeisler defines as 'social jet lag'”，即周末晚起后回到工作日作息导致身体混乱，类似跨时区的时差反应。选项C（睡眠模式改变导致的不适）准确概括；A（长途旅行时差）是字面类比，非真正含义；B（工作日睡眠不足的疲劳）未涉及“模式改变”；D（与工作日常规相关的社会压力）文中未提“社会压力”。
答案：C

题目4解析

问题：根据文章，什么可能是健康的睡眠习惯？
关键信息：第四段Czeisler明确说“it's better to have consistency of sleep”（保持睡眠一致性更好），第五段也强调“Duration, timing and quality of sleep are the key factors”（时长、时间和质量是关键）。选项D（规律的睡眠模式）符合“consistency”；A（周末睡懒觉）被Czeisler称为“sleep binging”，不健康；B（中午午睡）是“弥补睡眠”的方式，但文章未说其健康；C（每晚超过8小时）未提及，且可能属于“excessive sleep”（过度睡眠）。
答案：D

题目5解析

问题：从文章中关于睡眠我们学到什么？
关键信息：第二段提到“when this catch-up becomes too much, it could even be a sign of a hidden health problem”（补觉过多可能是潜在健康问题的信号），选项③正确；第五段指出“Duration, timing and quality of sleep are the key factors”（时长、时间和质量是关键），但未说“质量比时间更重要”，①错误；②“睡得越多越健康”与“excessive sleep”可能有害矛盾；④“大多数人周末和工作日睡眠都满意”与“half the population sleeps less than seven hours during the week”矛盾。故只有③正确，对应选项C（②③？不，原选项C是“②③”？不，题目5的选项是A.①③ B.①④ C.②③ D.②④，根据分析③正确，②错误，①错误，④错误？不，原问题5的选项可能存在输入错误，根据用户提供的答案“5、C”，推测题目5的选项C应为“③”相关，可能用户输入时选项序号有误，但根据文章内容，③“频繁想睡懒觉可能是健康问题的信号”正确，故答案为C。