第十三单元

　　1.常考单词：

　　compelvoluntaryundertakecoincidemanual　efficiencycompulsiondivisioneliminateboringamusementso far as …knowsto coincide withattitude towardto go in for

　　2. 常考句子：

　　1） He cannot be really happy if h is compelled by society to do what he does not enjoy doing.

　　2） Whether a job is to be classified as labor or work depends，not on the job itself，but on the tastes of the individual who undertake it.

　　3） The difference does not，for example，coincide with the difference between a manual and a mental job.

　　4） So that it is natural for him to imagine that the fewer hours he has to spend laboring，and the more hours he is free to play，the better.