单项选择题

Questions 23 to 25 are based on the conversation you have just heard.

A．E-commerce.
B．Wireless communications.
C．Business and the web.
D．New technology.

<上一题目录下一题>

热门试题

填空题

interview

单项选择题

Questions 23 to 25 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。