单项选择题

Questions 17-20 are based on the following conversation. You now have 20 seconds to read the questions 17-20. What do you know about Joe

A．He is a mechanic.
B．He can fit up electric lighting.
C．He works very hard.
D．All of the above.

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单项选择题

单项选择题

Questions 17-20 are based on the following conversation. You now have 20 seconds to read the questions 17-20. What do you know about Joe 您的浏览器不支持 audio 元素。