People have speculated for centuries about a future without work. Today is no different, with academics, writers, and activists once again (1)_____ that technology is replacing human workers. Some imagine that the coming work-free world will be defined by (2)_____. A few wealthy people will own all the capital, and the masses will struggle in an impoverished wasteland.

    A different and not mutually exclusive (3)_____ holds that the future will be a wasteland of a different sort, one (4)_____ by purposelessness: Without jobs to give their lives (5)_____, people will simply become lazy and depressed. (6)_____, today’s unemployed don’t seem to be having a great time. One Gallup poll found that 20 percent of Americans who have been unemployed for at least a year report having depression, double the rate for (7)_____ Americans. Also, some research suggests that the (8)_____ for rising rates of mortality, mental-health problems, and addiction (9)_____ poorly-educated, middle-aged people is a shortage of well-paid jobs. Perhaps this is why many (10)_____ the agonizing dullness of a jobless future.

    But it doesn’t (11)_____ follow from findings like these that a world without work would be filled with unease. Such visions are based on the (12)_____ of being unemployed in a society built on the concept of employment. In the (13)_____ of work, a society designed with other ends in mind could (14)_____ strikingly different circumstances for the future of labor and leisure. Today, the (15)_____ of work may be a bit overblown. “Many jobs are boring, degrading, unhealthy, and a waste of human potential,” says John Danaher, a lecturer at the National University of Ireland in Galway.

    These days, because leisure time is relatively (16)_____ for most workers, people use their free time to counterbalance the intellectual and emotional (17)_____ of their jobs. “When I come home from a hard day’s work, I often feel (18)_____,” Danaher says, adding, “In a world in which I don’t have to work, I might feel rather different”—perhaps different enough to throw himself (19)_____ a hobby or a passion project with the intensity usually reserved for (20)_____ matters.

答案精析：由空格前的be defined by可知，空格处应填入一个可以表示无工作世界特点或含义的词。空格后指出，一些富人将拥有全部资本，而普通大众将在贫穷的荒原上挣扎，由此可知，无工作世界的出现会导致“不平等”的特点，因此选择A项。

错项排除：B项instability意为“不稳定”，经常表示经济不稳定（economic instability）、政治不稳定（political instability）和情绪不稳定（emotional instability），此处表示富人和穷人之间的差距，因此排除B项。C项unreliability意为“不可靠”，无工作的世界为客观环境，不存在可靠与否，因此排除C项。D项uncertainty意为“不确定”，文章指出财富严重分化，并不意味着财富的不确定性，因此排除D项。