单项选择题

Robots will not be accepted unless ______.

A．they can do some domestic jobs in hospital
B．they can cook and package food
C．they can greet people at the' counter
D．they can do jobs human needs to solve a shortage of labourers

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热门试题

单项选择题

Which of the following is difficult for robots to do at present

A．To assemble machines.
B．To do some kinds of cleaning.
C．To work as service men.
D．To tell that the corner where walls and ceilings meet goes in, not out.

单项选择题

In the next decade ,Robots will become practical because of all but one exception that ______.

A．they may cook hamburgers in the restaurants
B．they can perform wonderous skill as shown in science fiction film
C．they may deliver meal trays in hospitals
D．they may do some moppings in the shopping center