2020-03-09到2020-05-10
Unit 1 Introduction to E-Commerce Unit1 Introduction to Electronic Commerce 单元测试
1、 Online chat is a way of communicating by sending text messages to people in the same chat-room real-time.
A: in
B: of
C: by
D:at
答案: in
2、 The sales of a particular company in a market, expressed as a percentage of the total sales is called .
A:market value
B:market share