Click the fast forward key or pull back the progress bar. Apple's mobile phone can fast-forward good doctor courses by clicking the fast-forward button or pulling back the progress bar, but some courses can't be fast-forwarded. This is to prevent you from taking the exam directly without watching the video when you are studying a course, and a button will pop up to remind you that you must complete the process questions before you can take the exam. This kind of question is a multiple-choice question, and you can continue to study after making a choice.