問題詳情：
根據短文內容，從下面方框中選擇適當的選項補全短文
"WeChat"is a new and powerful mobile communication tool．It supports sending voices，videios，photos and text messages．You can also do group chats，or you can find new friends nearby to talk to．
Recently，"WeChat"is becoming more and more popular in China．（1） ，no matter where they are．They can also find a"stranger"to talk to by"shaking the phone"．The system will find out others who are shaking their phones at the same time and make a match．Another amazing function is that WeChat can help to search for people who live nearby with the program on，and show the rough（大體上）distance．I like this function best，because（2） ．
Recently，I read news that some stupid girls meet guys they knew by shaking the cellphone ande （3） ．It obviously showed a lack of common sense（常識）．They should learn to protect themselves and not trust strangers so much．
（4） ，and at the same time it brings us bitter lessons．Being bigilant（*戒的）is necessary．
A．there were unpleasant incidents（事件）after they met
B．it can help you to find more people who you may know
C．Technology makes life easier and sweeter
D．People can sign up and leave text or voice messages for free．
【回答】
1D 2B 3A 4C
知識點：補充句子
題型：閱讀填空
