单项选择题

Which of the following statements is TRUE

A．Robots can think for themselves.
B．Robots can't work 24 hours a day in dangerous places.
C．All robots have a head and a hand.
D．Robots can't feel emotions.

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单项选择题

Robots can perform many different tasks by ______.

A．hand
B．arm
C．foot
D．head

单项选择题

According to the passage, humans ______.

A．can control the robots by program
B．can work a day in unpleasant surroundings
C．has a mechanical arm and a metal hand
D．didn't have a head