First, the multiple choice question is used to understand some basic questions, such as the gender and grade of the participant, the length of the online time per day, and the frequency of weekly use.
First, the choice questions are used to understand some basic questions, such as the participant's gender and grade, the daily length of time online and the frequency of use each week.
First of all, multiple choice questions are used to understand some basic issues, such as participants' gender and grade, daily online duration and weekly usage frequency.<br>