Question

【题目】More than nine out of ten young people expose themselves to the blue light from smartphones before bed, causing problems with sleep. A new survey also shows more than 28 million people in the UK regularly get no more than seven hours sleep a night. Prof Richard Wiseman, who commissioned the YouGov poll described the findings as “extremely worrying”. Of the 2,149 adults questioned, 78% said they used electronic devices before going to bed. This rose to 91% among the 18 to 24-year-olds questioned in the survey.

Getting less than seven hours sleep a night is below the recommended guidelines, and is associated with a range of problems, including an increased risk of weight gain, heart attacks, diabetes and cancer. “The blue light from these devices suppresses(压制) the production of the sleep—inducing hormone melatonin, so it’s important to avoid them before bedtime,” said Prof Richard Wiseman, from the University of Hertfordshire.

Everyone needs different amounts of sleep, but adults are generally thought to require a minimum of seven to eight hours a night. Teenagers are recommended to get more, about nine hours. The proportion(比例) of people thought to be getting too little sleep has risen by a fifth since a “bedroom poll” conducted last year by the National Sleep Foundation.

Last week revealed opticians were warning that the overuse of smartphones may be increasing people’s risk of eye damage. Optician Andy Hepworth said, “Blue violet light is potentially harmful to the back of your eyes.” So over a long period of time it can damage your eyes. When you’re looking at a smartphone, the light peaking out of that is blue violet. The news came as a survey of 2,000 people suggests under-25s check their smartphones 32 times a day.

【1】The purpose of the passage is to ________.

A. stress that people shouldn’t use smartphones

B. remind people of enough sleep

C. ask people not to sleep too much

D. tell people not to use smartphones before bed

【2】Which of the following statements is true according to the passage?

A. According to a new survey, more than 28 million people in the UK get more than seven hours sleep a night

B. More than 90% of young people expose themselves to the blue light from smartphones before bed.

C. Of the 2,149 adults questioned , 91% said they used electronic devices before going to bed.

D. The news came as a survey of 2,000 people suggests under-25s check their smartphones 30 times a day.

【3】According to what Andy Heoworth said , the overuse of smartphones may be increasing people’s risk of _________.

A. weight gain

B. cancer

C. eye damage

D. heart attacks

【4】Teenagers are generally thought to get sleep of _____a night.

A. about 9 hours

B. 7—8 hours

C. less than 7 hours

D. more than 10 hours

Answer 1

【答案】to get more, about nine hours.A选项about 9 hours

文章细节的理解可以细化为：（1）一一对应型。答案与题目在表达形式和意义上直接吻合，一一对应，一目了然。解答此类试题时，不必通篇细看原文，而应采取“带着问题找答案”的方法，先从问题中抓住关键性词语（题眼），然后以此为线索，运用略读及查读的技巧快速在文章中寻找与此问题相关的段落、语句，仔细品味，对照比较，确定答案。

【解析】 本文是一篇科普说明文。研究表明，睡前使用智能手机导致睡眠问题。

【1】D

推理判断题。根据第一段中的“More than nine out of ten young people expose themselves to the blue light from smartphones before bed, causing problems with sleep.”可知，超过90%的年轻人会在睡前玩手机，导致了睡眠问题。因此可推断出，本文的目的就是告诉人们不要在睡前玩智能手机。分析选项可知D项是正确的。

【2】B

细节理解题。根据第一段第一句“More than nine out of ten young people expose themselves to the blue light from smartphones before bed,” 超过90%的年轻人会在睡前玩手机，导致了睡眠问题。可知A是正确的。第二句“A new survey also shows more than 28 million people in the UK regularly get no more than seven hours sleep a night.”可知是睡眠不足七小时，故A的超过7小时是不对的，故A是错误的。根据“Of the 2,149 adults questioned, 78% said they”可知C项中超过91%是错误的。根据 最后一句“…under-25s check their smartphones 32 times a day.”可知D项中是30次，D项是错误的，故只有B项是正确的。

【3】C

细节理解题。根据最后一段的中的“Last week revealed opticians were warning that the overuse of smartphones may be increasing people’s risk of eye damage. Optician Andy Hepworth said, “Blue violet light is potentially harmful to the back of your eyes.””配镜师警告说，智能手机的过度使用可能会增加眼睛损伤的风险。配镜师Andy Hepworth说，“蓝紫光可能对你眼睛有害的。分析选项可知C项符合题意。

【4】A

【解题剖析】此题属于细节理解中的（1）一一对应型。答案与题目在表达形式和意义上直接吻合。

【答案定位】根据第三段中的“Everyone needs different amounts of sleep,…Teenagers are recommended to get more, about nine hours.”….建议青少年的睡眠时间是每天大约九小时。

【推理关系】题干Teenagers are generally thought to get sleep of _____a night. 文章内容Teenagers are recommended to get more, about nine hours.