请大家根据1.2视频内容回答下列问题: What's the aim of a self-introduction? 2. How many parts does a self-introduction include? What are they? 3.What does the basic personal information often include? 4.If you make a self-introduction for an interview, the focus might be on ___________________________________________________. 5.If you want to do well in the third part in a self-introduction, you should _____________________________________________________________________.