46. What is the main idea of the passage?
(A) The positive and negative effects of online classes.
(B) An introduction to the online seating arrangement system.
(C) The stories about a powerful system to fight against diseases.
(D) An approach to virtual physical interactions between teachers and students.
詳解 (共 1 筆)
未解鎖
這篇文章主要在討論遠距教學的優缺點 開...