单项选择题

Questions 17—20 are based on the following text about a firefighter. You now have 20 seconds to read Questions 17—20.
How long did Herbert remain unconscious

A．Two and a half months.
B．Fifty years.
C．Thirty years.
D．Ten years.

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单项选择题

单项选择题

Questions 17—20 are based on the following text about a firefighter. You now have 20 seconds to read Questions 17—20. How long did Herbert remain unconscious 您的浏览器不支持 audio 元素。