单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.
What kind of robots does the man refer to

A．Agricultural robots.
B．Industrial robots.
C．Computers.
D．Electrical robots.

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单项选择题

单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. What kind of robots does the man refer to 您的浏览器不支持 audio 元素。