题目内容：
根据以下材料回答第 1～4 题：Passage Two
We sDend our leisure hours effciently for higher production，bye by the clock even when time does nOt matter，modernize our homes and speed the machinery of living in or der that we can go to the most places and do the most things in the shortest period of time Dossible．We try tO eat，sleep，and talk efficiently．Even on holidays and Sundays，the elficient man relaxes on timetable with one eye on the colck and the other on an apppointment sheet．
To saueeze the most out of each shining hour we have shortened the opera，quickened the pace of the movie and put culture in pocket—sized packages．We make the busy bee look like a lazv creature，the ant like a sluggard．We live sixty-mile-minute and the great efficiency smiles．
We wish we could return to that pleasant day when we considered time a friend insread of enemy；when we did things willingly and because we wanted t0，rather than because our timetable called for it，But that of course would not be efficiency；and we Americans must be efficient．
The phrase that best expresses the main idea of this passage is．
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