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Questions 19 to 22 are based on the conversation you have just heard.

A．How to keep fish.
B．How to make large aquatic appliances.
C．If the man is qualified to be the apprentice.
D．If the man is a good apprentic

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单项选择题

单项选择题

Questions 19 to 22 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。