Can the aerial class be comparable to the offline class?

I think it is still a bit difficult, that is, everyone has to take classes online during this time, so Goose Pass is widely used by educational institutions. For example, the live class corresponds to the off-line class. Some brush questions, tests and interactive answers are just to make up for the interaction between teachers and students, but it is still difficult to replace the off-line class, that is, the sense of reality. These tools still have natural advantages in the learning atmosphere. In addition, science and technology are progressing, and there will be various situations in the future.