此云端课程包含下列30个单元：
Key C Unit 1 Song
Key C Unit 1 Conversation
Key C Unit 1 Story
Key C Unit 1 Phonics
Key C Unit 1 Main Theme
Key C Unit 2 Song
Key C Unit 2 Conversation
Key C Unit 2 Story
Key C Unit 2 Phonics
Key C Unit 2 Main Theme
Key C Unit 3 Song
Key C Unit 3 Conversation
Key C Unit 3 Story
Key C Unit 3 Phonics
Key C Unit 3 Main Theme
Key C Unit 4 Song
Key C Unit 4 Conversation
Key C Unit 4 Story
Key C Unit 4 Phonics
Key C Unit 4 Main Theme
Key C Unit 5 Song
Key C Unit 5 Conversation
Key C Unit 5 Story
Key C Unit 5 Phonics
Key C Unit 5 Main Theme
Key C Unit 6 Song
Key C Unit 6 Conversation
Key C Unit 6 Story
Key C Unit 6 Phonics
Key C Unit 6 Main Theme
