题目： Mobile phones and the Internet play an important role in the way people relate to one another socially. Is this a positive or negative development?
　　手机与网络影响着人们社交方式，社会科技类话题，从题目最后一句话可判断该篇作文为利弊类型。
　　文章结构：
　　第一段：交代背景，引出手机与网络在人们生活中的必要性。
　　第二段：具体论述手机与网络在人们交流中的积极作用，即及时性，灵活性，尖端功能的多样性。
　　第三段：从线下人际关系与个人隐私角度论述手机与网络对人们交流产生的不利影响。
　　第四段：综合全文，表明自身观点，即使用者合理使用规避其缺点，发挥手机与网络的优点最大化。
　　范文
　　Now you are benefitting from the use of the mobile phone and the Internet as social interaction media, could you imagine what your daily lives would be without these inventions? Living in this age of information technology may be a blessing, but there seems to be an undesirable feeling under disguise.
　　It has become incredibly easy to contact each other electronically and share information instantly in social community. Through digital networking, the cell phone and the Internet have updated the lives of the current generation. Gone are the days when people could only communicate via fixed telephone or writing letters which took several days to reach others. Apart from being able to connect people anywhere and anytime, new cell phones combined with Internet technology boast cutting-edge functions ( sharing photos and videos with more friends simultaneously ), all at your fingertips, no one is not crazy about Facebook and Twitter that are on their computer screens or smart phones.
　　In spite of the merits mentioned above, never should we turn a blind eye to the defects of this technological progress. First and foremost, excessive use of the Internet and mobile phones has been undermining our interpersonal relationship offline. Even during a face-to-face conversation, it is no rare thing that everyone is busy looking at his cell phone, neglecting his friends or families across the dinner table. Worse still , the users` privacy is at stake on line. Chances are that they may unconsciously leak their personal information by posting pictures or exposing profiles that strangers can get access to. That is why cyber fraud is becoming increasingly rampant there. This channel of committing crimes can bring more looming hazards than a daylight robbery.
　　As far as social interaction is concerned, the benefits of the cellular and the Wi-Fi seem indeed too good to be blamed as long as the users keep it under control.