单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A．House sales company.
B．Motor sales company.
C．Food sales company.
D．Travel agency.

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单项选择题

填空题

Multitasking, even if taken to the extreme, can give office workers a positive feeling, since frequent interruptions make them feel much needed and desired.

Questions 22 to 25 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。