Hi Jingya,
I would recommend to mark all questions you want to review later. If I remember correctly, once you get to the end of the exam part, you have the option to review ALL questions vs. review MARKED questions. As you may not have enough time to review them all (and you may not want to), reviewing only questions you marked before is, in my opinion, the most effective way to go through it.
I cannot remember a way to jump from one question to the other to review them, similarly to what you can do in the PMPrepCast.
Gabriella