The reading screen displays a list of lessons. Lessons are “locked” until they are “unlocked” by completing the corresponding flashcard lesson as well as the preceding reading lesson. This ensures the reading content is on level with the progress 马丽 has made with flashcard. When 马丽 taps a lesson that is unlocked, the corresponding text screen is displayed.
The reading screen displays a list of lessons. Lessons are “locked” until they are “unlocked” by completing the corresponding flashcard lesson as well as the preceding reading lesson. This ensures the reading content is on level with the progress 马丽 has made with flashcard. When 马丽 taps a lesson that is unlocked, the corresponding text screen is displayed.