Whichoneisthemeritofthecomputer?
A.keepintouchwithourfriendsandfamilymembersthroughvideochat.
B.efficientlyfindtheinformationthroughsearchengine
C.teacherscanutilizeonlineresourcestomakeasupplementtotheirteachingcontents
D.Dtheemployeeshavemorefreedom,andmoreflexibleworkschedules.
正确答案：ABCD