1, you can use some search software or websites, such as speed dating and campus confusion bugs. , you can quickly search the answers and analysis of questions through voice or photos, and support a variety of question banks and platforms, such as Xue Tong, Wisdom Tree and massive open online courses.

2. You can also search for related questions or topics on some Q&A platforms or communities, such as Zhihu, to see if anyone has shared the answers or resources of the refining course.