A robot can be found everywhere in the future. It may do all that human beings do. As civilization proceed in the direction of t

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问题     A robot can be found everywhere in the future. It may do all that human beings do. As civilization proceed in the direction of technology, it passed the point of supplying all the basic essential of life—food, shelter, clothes, and warmth. Then we are faced with a choice between using technology to provide and fulfill needs which have hitherto been regarded as unnecessary or, on the other hand, using technology to reduce the number of hours of work which a man must do in order to earn a given standard of living. In other words, we either raise our standard of living above that necessary for comfort and happiness or we leave it at this level and work shorter ours. I shall take it as axiomatic than mankind has, by that time, chosen the latter alternative. Men will be working shorter and shorter hours in their paid employment. It follows that the housewife will also expect to be able to have more leisure in her life without lowering her standard of living. It also follows that human domestic servants will have completely ceased to exist. Yet the great majority of the housewives will wish to be relieved completely from the routine operations of the home such as scrubbing the floors or the bath or the cooker, or washing the clothes or washing up, or dusting or sweeping, or making beds.
"We either raise our standard of living above that necessary for comfort... " What does "at" here refer to?

选项 A、Shorter hours
B、The basic essentials of life
C、A given standard of living
D、Robot about the house

答案C

解析
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