单项选择题

What is one result when more robots are introduced

A．More workers would rather do dirty work.
B．More jobs can be interesting and exciting.
C．More industry experts are needed.
D．More workers are out of work.

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单项选择题

Factory owners use ______ all across the country.

A．no robots
B．hundreds of robots
C．many thousands of robots
D．few robots

单项选择题

The passage is mainly about______.

A．robots
B．jobs
C．workers
D．factories