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1、课后分层集训Unit 1Living with technology.阅读理解(2017福建省五校统考)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.Pr
2、of 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 24yearolds questioned in the survey.Getting less than seven hours sleep a night
3、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 sleepinducing hormone melatonin，so its important to avoid them before be
4、dtime，” 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 ge
5、tting too little sleep had 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 peoples risk of eye damage.Optician Andy Hepworth said，“Blue violet light is potentially
6、 harmful to the back of your eyes.” So over a long period of time it can damage your eyes.When youre looking at a smartphone，the light peaking out of that is blue violet.The news came as a survey of 2，000 people suggests under25s check their smartphones 32 times a day.【语篇解读】本文是一篇科普说明文。研究表明，睡前使用智能手机将
7、导致睡眠问题。1The purpose of the passage is to _Astress that people dont use smartphonesBremind people of enough sleepCask people not to sleep too muchDtell people not to use smartphones before bedD写作意图题。根据第一段的第一句“More than nine out of ten young people expose themselves to the blue light from smartphones
8、before bed，causing problems with sleep.”可知，超过90%的年轻人会在睡前玩智能手机，因此导致睡眠问题；据此可以判断，本文旨在告诉人们不要在睡前玩智能手机，故D项正确。2Which of the following statements is TRUE according to the passage?AAccording to a new survey，more than 28 million people in the UK get more than seven hours sleep a night.BMore than 90% of young
9、people expose themselves to the blue light from smartphones before bed.COf the 2，149 adults questioned，91% said they used electronic devices before going to bed.DThe news came as a survey of 2，000 people suggests under25s check their smartphones 30 times a day.B细节理解题。根据第一段的第一句“More than nine out of
10、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智能手机，故B项正确；根据第一段的第二句“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，这些人每晚的睡眠时间不超过7个小时，故A项错误；根据第一段的倒数第
11、二句“Of the 2，149 adults questioned，78% said they used electronic devices before going to bed.”可知，这些人中的78%说他们在睡前使用电子设备，故C项错误；根据文章的最后一句“The news came as a survey of 2，000 people suggests under25s check their smartphones 32 times a day”可知，这些人每天检查智能手机32次而不是30次，故D项错误。3According to what Andy Hepworth said，
12、the overuse of smartphones may be increasing peoples risk of _Aweight gainBcancerCeye damage Dheart attacksC细节理解题。根据最后一段的第一、二句“Last week revealed opticians were warning that the overuse of smartphones may be increasing peoples risk of eye damage.Optician Andy Hepworth said，Blue violet light is poten
13、tially harmful to the back of your eyes.”可知，Andy Hepworth认为，过度使用智能手机会损伤眼睛，故C项正确。4Teenagers are generally thought to get sleep of _ a night.Aabout 9 hoursB78 hoursCless than 7 hoursDmore than 10 hoursA细节理解题。根据第三段的第二句“Teenagers are recommended to get more，about nine hours.”可知，青少年所需要的睡眠时间是每天大概9个小时，故A项正
14、确。.阅读七选五(2017石家庄模拟)How to Avoid an Internet AddictionWhile it may seem like everyone surfs the web these days，there is a fine line between casually checking your social media pages and having a fullblown Internet addiction.If you fear that you may lose interest in other aspects of your life because
15、you prefer to be on the Internet，you may be on your way to an Internet addiction.1._Admit you are at the risk of an addiction.More and more people in the world are becoming addicted to the Internet.You are not the only one with this problem，and it is becoming more and more common and more and more w
16、ellknown.2._Set aside limited time for computer use.Make sure not to turn it on too many times a week.If you have a laptop，make sure to put it somewhere that you can remember but not somewhere that you see every day.Try keeping the lid closed when you are not using it.3._ If you have a desktop PC，try not to go near it or
