Zhang Ming, a college student from Shandong, created a 9-page “WeChat guide”. With drawings and simple words, the step-by-step guide explains how to send messages, take pictures and make video calls. Zhang made the guide for his parents. “My parents are getting old. They need an easy way to learn how to use new technology.” He said.

    Zhang's experience is common nowadays. Worldwide, 40 percent of parents learn about new technologies, including computers, mobile Internet and social media, from their children, according to a study from the International Communication Association in 2014.

    Parents used to teach their kids about almost everything. Now for the first time, the teachers become the students, and the students turn into the teachers.

    The change of roles comes from the rapid development of society and technology, says Zhou Xiaohong, a sociology professor from Nanjing University. Zhou said the Internet and other forms of media give children ways to get information besides from asking older generations(长辈). Therefore, in the age of information, it's possible that children know more than their parents do.

    According to the China Internet Network Information Center(CINIC), 56.7 percent of Internet users and 67.2 percent of social media users in China are under the age of 30. The younger generation usually acts as a link between their family and the new environment. But when they teach their parents new technologies, parents can connect to the new world by themselves, noted Zhou.

    In Zhang Ming's eyes, teaching his parents about WeChat brings him closer to his parents. “People can communicate more by using new technology. Why should we keep our parents out?” said Zhang.

记叙文阅读，完成1-4题。

时光不旧，只是落满尘灰

朱成玉

1那时我20岁，却在经历人生的秋天，满目落红，遍地枯草，大有“晚景凄凉”的味道。

2他没有退休金，每日里靠捡拾垃圾艰难度日。喝酒算是他一天中唯一的一点乐趣吧。只有在喝点小酒的时候，那院子里才有了点儿活人的气息。那样的时候，我甚至能听到他哼着一些古老而神秘的曲调。

3他的院子里堆着的都是捡来的没来得及去卖的破烂，就是这廉价的破烂，竟然也遭遇了盗贼。那盗贼就是我。

4高考落榜后，父母让我去工厂做学徒工，我不去，关起门来坚持写作，梦想有一天可以写出名堂来。苍白无力的青春，空洞的辞藻，自然无法让我写出多么出彩的文章来。消极的我开始变得颓废，抽烟酗酒打架“无恶不作”，邻家隔几天就上门来和父母讨说法，父母气急败坏，不再给我零花钱，任凭我“自生自灭”。我要写稿投稿，没钱买稿纸和邮票，只好打了他的主意，因为我注意到，他那些垃圾里，有一些本子，是可以拿来用的。

5他并没有太严厉地呵斥，只是对我说：“你不好好读书，来这破烂堆里翻个啥？破烂就是破烂，还能翻出什么稀罕玩意来？”说完他就往那对破烂里一躺，和那堆破烂融为一体，好像要告诉我，那破烂是他的，也就他把那破烂当有用的东西吧。“嘿嘿，我也是个破烂。你来翻翻，看我口袋里有没有点儿值钱的东西。” 6我的脸羞臊得通红，只好和他坦白，说自己看中了他捡来的那些本子。

7“不过话说回来，破烂也分两种，一种是完全没有用的，一种是还有一点利用价值的，比如我捡的这种，还是可以换回一点钱的。”那天他喝了酒，心情不错，没有和我发火。借着酒劲儿，还对我进行了一番教诲，“人啊，不管多糟糕，哪怕你狼狈得像个垃圾一样，把自己扔进了不可回收的垃圾箱。”

8听着这话，一点不像一个捡破烂的老人说的，反倒像我的语文老师在课堂上给我讲的。

9为了“惩罚”我，他说，“去给我把窗玻璃给擦了吧，很久没擦了，都看不到外面的东西了。”我只好乖乖地就去擦玻璃。玻璃擦干净了，晦暗的屋子一下子亮堂了起来。他心情很好，招呼我喝一口。我捏着鼻子喝了一口，辣得不行，直吐舌头，他倒是乐得前仰后合。最后，他在自己的垃圾里仔细挑拣，把那些我能用到的本子都给了我。“该惩罚也惩罚了，不过你既然帮我把玻璃擦得那么干净，也得奖励奖励，这些就奖励给你吧。”我流着泪接过那一摞本子，脏兮兮、皱巴巴已近迟暮的本子，我却坚信自己，可以在那上面写出干干净净，青春靓丽的文字来。一度以为，自己荒废了光阴，不可救药。但这个可敬的老人让我知道，时光还没有被我用旧，只是蒙上了一层灰垢而已。只要用心去擦一擦，那隐匿起来的时光随时都可以亮洁如新。

（选自2014年第6期《当代青年》）