单项选择题

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

A．A tie.
B．A pet frog.
C．A leather bag.
D．A pipe.

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Actions taken by Siemens and other firms show demanding for consultancy is ______.

单项选择题

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