Not necessarily. Universities are dominated by a lot of free time. If you want to achieve any goal, such as what certificate to take in the near future, or what level to take, you can spend more time on it, but the questions you brush may not be completely helpful for your grade examination or textual research, and of course it is not excluded. As long as you listen carefully in class, it is too difficult for universities to brush questions, and college life can still do more and better things! !