单项选择题

Questions 26 to 28 are based on the passage you have just heard.

A．In the volcanoes.
B．On the floor of the sea.
C．Under the river bed.
D．At the foot of the mountains.

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单项选择题

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As an MBA student, Heard knows something about his son mainly via______.

Questions 26 to 28 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。