在本单元我们回顾一下我们采访过的人士，他们都来自各行各业，再听一听他们对自己工作的描述。听完后，试着用英语描述一下你自己的工作吧。
Listen to these audio clips and identify what the speakers do for a living
  Listen to Zhang Ling talking about her job.
  Listen to Richard Harrison talking about his job.
  Listen to Ma Huiyun talking about her job.
  Listen to Wen Quan talking about his job.
  Listen to Yu Lei talking about her job.
  Listen to David Chen talking about the type of work his company does.
  Listen to Wu Zheng talking about her job.
  Listen to Dan Chen talking about his job.
  After you've listened, read the answers