问题描述：
do you k---- robots?there are a l---- of robots in the worldnow.some of the robots can walk ,sing
and dance.some can talk w---- people.most of them can do heavy work.in a few m---- years,a robot will be able to d---- a car,a train,a ship or a p-----.
and dance.some can talk w---- people.most of them can do heavy work.in a few m---- years,a robot will be able to d---- a car,a train,a ship or a p-----.
问题解答：
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