By the end of 2018, more than______of the global population will be using a smart phone.

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问题 By the end of 2018, more than______of the global population will be using a smart phone.
  
Nearly 2. 4 billion people around the world used a smart phone in 2017. By the end of 2018, more than a third of the global population will be using a smart phone.
   On the one hand, it sends us unlimited amounts of information. We don’t have to wait. Our devices ring, ping, vibrate and light up with the latest news from family, friends and around the world.
   On the other hand, this immediate access to information may become an addiction. And it may make some people feel lonely, anxious and depressed. These findings are from a 2018 study from San Francisco State University and have been published in Neuro Regulation.
   Erik Peper and Richard Harvey are both health education professors at the university. They led the study. In a statement to the press, the two professors claim that "overuse of smart phones is just like any other type of substance abuse. " Also, addiction to social media may affect our emotional state.
   The two professors asked 135 university students about their smart phone use and their feelings. They found that "students who used their phones the most reported higher levels of feeling . . . lonely, depressed and anxious. "
   But the researchers also suggest ways to fight back. They say that we can train our brains to be less addicted to our phones and computers. Erik Peper suggests turning off push notifications and other such alerts on our phones. More often than not, our devices share unimportant information as if our lives depended on it. Our brains see the notices the same way. And that is a problem. So, just turn them off.
   The researchers also suggest taking control of when and where you answer a text or email. You do not need to answer them all. And you certainly don’t need to answer them as soon as you get them.
   They also suggest setting limits on the time you spend on social media. If you want to catch up with friends on Facebook, set aside a small amount of time to it. Schedule periods of the day to focus on important tasks and do not allow technology to interfere.

选项 A、Addiction to social media may more or less affect our emotional state.
B、Our brains can’t be trained to be less addicted to our phones and computers.
C、Smart phone technology can be a double-edged sword.
D、Peper and Harvey claim that tech industry’s desire to increase corporate profits is to blame for the addiction to social media.

答案C

解析 特定信息的推理判断。A选项“沉迷于社交媒体或多或少会影响我们的情绪状态”,这个表述的错误在于多加了信息“more or less”,原文的表述是“addiction to social media,may affect our emotional state”,意思是“沉迷于社交媒体可能会影响我们的情绪状态”,因而此选项可排除。B选项“我们的大脑无法被训练得不那么沉迷于手机和电脑”,这个信息可以从文中找到相关的来源, “They say that we can train our brains to be less addicted to our phones and computers”,意思是“他们说我们可以训练我们的大脑减少对手机和电脑的依赖”,由此可见此选项不符合原文的表述,因而排除。D选项表述的意思是“里克-佩珀和理查德-哈维声称科技行业对企业利润的渴望是社交媒体成瘾的罪魁祸首”,这个信息在原文中并没有出现,属于主观臆断,因而排除。正确选项是C,“Smart phone technology can be a double-edged sword”意思是“智能手机技术可能是一把双刃剑”,这个推断可以在原文中找到相关的信息, “On the one hand,it sends us unlimited amounts of information.We don’t have to wait.Our devices ring,ping,Vibrate and light up with the latest news from family,friends and around the world.On the other hand,this immediate access to information may become an addiction.And it may make some people feel lonely,anxious and depressed”,表达的意思是“一方面,它发送给我们无限数量的信息。我们不必等待。我们的设备会发出铃声、振动并显示出来自家人、朋友和世界各地的最新消息。另一方面,这种即时获取信息的方式可能会让人上瘾。它可能会使一些人感到孤独、焦虑和沮丧”,由此可见,智能手机既有好处又有坏处,是一把双刃剑。
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