1 . Since 2017, short videos have gotten millions of views（关注）online. Many people create and share short videos on popular video apps like Douyin and Kuaishou. You can even add music and special effects（特效）to your videos. The videos are 15 seconds to a few minutes long. They show people do activities like cooking, exercising and singing.
Teenagers especially enjoy these videos. More than 50 percent of the teenagers said they enjoyed watching these short videos. About 47 percent of them have posted their own videos, according to a recent report by the China National Youth Palace Association.
The videos let teenagers see funny and exciting things they wouldn’t usually see. Many teens like to share the fun things they do with others as well. For example, a 12-year-old user named Xiao Qianyu has posted videos to show her learning jazz dance. This has won her many fans.
However, the videos can also cause some trouble. Some teenagers spend too much time watching them and not enough time studying. Some videos are vulgar（庸俗的）and not good for teenagers.
To deal with these problems, Douyin added a new function（功能）. It locks the app if someone uses the app for over two hours a day. The government also asked companies to make more strict rules for these apps and cancel（取消）the unsuitable videos.
1. Douyin is a kind of popular ________.| A．video app | B．short video | C．TV program | D．news report |
| A．more than 50% of the teenagers watch videos on apps every day |
| B．about 47% of the teenagers have shared their videos on apps |
| C．it’s hard for teenagers to see something interesting on apps |
| D．Douyin will lock the app if someone uses it for two hours a week |
| A．actively | B．privately | C．widely | D．wisely |
（①＝Para. 1 ②＝Para. 2 ③＝Para. 3 ④＝Para. 4 ⑤＝Para. 5）
| A．①②；③④；⑤ | B．①②③；④；⑤ |
| C．①；②③；④⑤ | D．①；②③④；⑤ |
