单选题（）hasbecomeafactofmodemlife，withmillionsofpeoplenowshoppingon-line.A E-mailB E-commerceC E-IearningD E-communication
题目
单选题
（）hasbecomeafactofmodemlife，withmillionsofpeoplenowshoppingon-line.
A
E-mail
B
E-commerce
C
E-Iearning
D
E-communication