The outbreak of the Novel Coronavirus Pneumonia has made online courses the first choice nationwide and even the world , leaving students on and off .

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The online class breaks the limitation of time and space , realizes the sharing of teaching resources , and learns from each other's strengths . The time and place of online learning are relatively flexible , and there are no restrictions on the time , place , content and schedule of centralized training . Students can choose the learning method that suits them through online learning . Communication is easier and fuller . Everyone can ask and answer the questions . Both students and teachers can communicate on an equal footing to achieve what they want .