A.Projector.
B.Software.
C.Output equipment.
D.Slide.
A.The system invites learners to speak directly with speakers.
B.The system offers learners to do dictation.
C.The system invites learners to be involved in the conversation of native speakers.
D.The system can keep record.
A.Improving spoken English.
B.Sharpening listening ability.
C.Enlarging idiom vocabulary.
D.Improving writing skills.