单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A．To mention other space programs.
B．To incorporate pictures into the paper.
C．To keep working on the original subject.
D．To search for information on the Internet.

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单项选择题

A．Computer sales negotiations.B．A preliminary interview.C．An Internet seminar meeting.D．An oral test for computer science.

A．Computer sales negotiations.
B．A preliminary interview.
C．An Internet seminar meeting.
D．An oral test for computer science.

Questions 19 to 21 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。

Questions 19 to 21 are based on the conversation you have just heard.