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  3. In today’s world, online social media has become more powerful and the most destructive thing over worldwide. Although with time

In today’s world, online social media has become more powerful and the most destructive thing over worldwide. Although with time

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问题     In today’s world, online social media has become more powerful and the most destructive thing over worldwide. Although with time all generations have come to embrace the changes social network has brought about, teenagers and young adults are the most fanatic users of these sites. According to various research studies in the field of online social networks, it has been revealed that these sites are impacting the lives of the youth greatly. When using these sites such as Twitter, Facebook or Myspace, there are both positive and negative effects on the youth.
    Firstly, social media helps the youth and any other user updated with what is happening around the world, and helps the teenagers stay connected and interact with each other even if they are many miles apart. This strengthens their relationship. Even if they finished school and moved to different locations, they stay connected and update one another.
    In addition, social media sites have provided a platform whereby the youth can create groups and pages based on their common discipline and end up building connections and opportunities for their respective careers by updating various topics to discuss. Youth who have been interviewed say that social media has become their lifestyle and it makes their lives easier and more efficient.
    While on the one hand social network sites seem to bring people together and stay connected, on the other hand it causes many physical and mental health problems such as eyes infection, back problems, etc. Other negative effects of social networking various people suggested included encouraging poor spelling and grammar, exposing underage to online predators (捕食者), allowing spread of misinformation that is seen as fact, decreasing productivity as those who are supposed to be working spend time in the sites to chat, providing a perfect platform for cyberbullying and providing details that increase risks of identity theft.
    "The more social media we have, the more we think we’re connecting, yet we are really disconnecting from each other."
    In conclusion, social networking clearly portrays both positive and negative effects on the youth. It is the decision of individuals whether to use it in a right way or wrong.
What’s the main topic of this passage?
选项 A、The introduction of online social media history.
B、The research on online social media.
C、The influence of online social media on the youth.
D、The correct way to use online social media.
答案C
解析 主旨大意题。作者开篇提到了网络社交媒体对年轻人既有正面影响也有负面影响。紧接着在第二、三段介绍了其正面影响，第四、五段介绍了其负面影响。最后一段再次强调网络社交媒体最终给年轻人带来正面影响或负面影响完全取决于个人。综合考虑，C)“网络社交媒体对年轻人的影响”最接近全文主旨，为正确答案。A)“对网络社交媒体历史的介绍”原文第一段对网络社交媒体的历史作了一个简短的介绍，但并非全文的重点，故排除；B)“对网络社交媒体的研究”，文章只在第一段第三句提到“调查研究”，但是指各项关于社交网络领域的调查研究表明，这些网站正在给年轻人的生活造成巨大的冲击，故排除；D)“使用网络社交媒体的正确方法”原文并未提及，故排除。
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大学英语四级

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