The words "routine operations" (Para. 1, Line 12 ) in this passage refer to______.

A．describe the steps to train a robot
B．advertise a new' type of robot
C．instruct housewives how to operate a robot
D．suggest making use of a robot in the house

A．are not satisfied with present standard living
B．think that domestic servants are very helpful
C．will prefer to live a life with more free time
D．hope that husbands will be better paid by the employers