请阅读下面这篇文章，根据所提供的信息，回答5个问题。要求所写答案语法正确、语义完整。
“Short videos” are very popular with young people. Do you know which social app most young people use a lot now? Yes, they are Tik Tok(抖音) and Kuaishou. Many young people think it is fun to share their lives by short videos, while some have other purposes as well.
A 12-year-old user named Elsa has about 2.7 million fans on TikTok. The girl has shared videos about her dancing studies since last July. One of the videos won her about one million fans. “I feel really glad to share happiness with people by short videos,” said Elsa. Wang Zhihao, a college student, thought short videos of wonderful parts of program: could help him save a lot of time. So he prefers to watch short videos. Adam cares much about the social events and he wants to know what’s going on around the world quickly. So he depends on the short videos to get the newest information. However, there are some young people who feel bored with short videos. “Killing time is the main reason for me to watch short videos,” said Wen Nan, another college student.
Some videos tell people what commodities (货物) are worth buying, but some short videos may sell bad commodities. So it’s necessary to think twice before buying something.
【小题1】Which social app do most young people use a lot now?【小题2】How many fans does Elsa have on Tik Tok?
【小题3】Why does Elsa share her short videos?
【小题4】Who wants to get the newest information from the short videos?
【小题5】What’s the main reason for Wen Nan to watch short videos?
【小题6】书面表达
请根据要求完成短文写作。
假设你是李华。你的英国朋友Tony对短视频很感兴趣， 他听说短视频在中国很受欢迎，写信向你询问。请你回信介绍短视频有关情况，要点如下：
（1）优点：短小，有趣，很受欢迎；（2）缺点：质量不一，耗费时间；（3）你的看法。参考词汇：short video短视频
作文要求：（1）不能照抄原文，不得在作文中出现学校的真实名称和考生的真实姓名；
（2）语句连贯，词数80左右。作文的开头和结尾已经给出，不计入总词数。
Dear Tony,
I’m so glad to hear from you. You said that you’re interested in the short videos in China. I’d like to introduce something about short videos to you.
Best wishes!
Yours,
Li Hua
