B If I could have your attention, I'd like to talk to you about young people's screen time. It's a tempting habit for them to glance at their smartphone or tablet rather than make eye contacts with someone and make conversations! There is so much to look at: photographs, social media feeds messages and emails; it's no wonder they are glued to their screens. But is it good for them? There have been many claims about the damage looking at screens does to our eyesight. Some people feared staring at a small bright box could make us short-sighted or lead to headaches. This is a particular concern for children and young people, who spend a higher percentage of time using electronic gadgets. BBC technology corespondent, Rory Cellan-jones, says: “There is plenty of anecdotal evidence that no matter how long teenagers are spending looking at screens. they are encountering material about issues such as anorexia (厌食症) and self-harm that could prove damaging to their mental health.” But a new study says time in front of computers and phones might not be as bad for young people as many think. Research by the Oxford Internet Institute examined data from more than 17.000 teenagers in the UK. Ireland and the United States. Their study concluded that most links between life satisfaction and social media use were trivial" accounting for less than 1% of a teenagers health. Professor Przybylski, director of the research at the institute, said: 99.75 of a persons life satisfaction has nothing to do with their use of social media. " The research found that family, friends and school life all had a greater impact on well-being. Perhaps for now, deciding what the "right" amount of screen time is has to be up to personal judgments. 35. The first paragraph is designed to _____.

• A.lead in the topic
• B.introduce a new type of screen
• C.promote a phone
• D.show the finding of a stud