This passage was adapted from an article written in 1990.
Research data indicate that there is a great deal of poverty in the United States among single-parent families headed by women. This problem could result from the fact that women's wages are only 60 percent of men's. Some economists believe that rigorous enforcement of existing equal pay laws would substantially decrease this wage inequity. But equal pay laws are ineffectual when women and men are concentrated in different occupations because such laws require only that women and men doing the same jobs be paid the same. Since gender concentration exists (for example, 80 percent of clerical workers are women), other economists argue that a comparable worth standard, which would mandate that women and men in any jobs that require comparable training and responsibility be paid the same, should be applied instead. But some policy analysts assert that, although comparable worth would virtually equalize male and female wages, many single-parent families headed by women would remain in poverty because many men earn wages that are below the poverty line. These policy analysts believe that the problem is not caused primarily by wage inequity but rather by low wages coupled with single parenthood, regardless of sex. As a solution, they challenge the government's assumption that a family's income should depend primarily on wages and urge the government to provide generous wage supplements (child and housing allowances) to single parents whose wages are low.
The passage suggests that the United States government's policy towards providing wage supplements to parents whose wages are low is

定位到原文but some policy analysts assert that...虽然comparable worth能使男女收入平等,但是单亲家庭贫困的原因并不在于工资不平等,跟性别无关,而是单亲和低收入两者共同的原因,原来政府觉得只要给单亲低收入家庭提供工资补助就行了,现在看来这种假设受到了挑战 A 不是most economists,而是policy analysts B 政府的计划是基于家庭收入来源的假设上的,正确 C 这个政策原文中并没有提到在修改中 D 文章没有提到这个政策不能给男女都增加收入的问题 E 这个政策是针对单亲家庭的,但没有说只针对女性单亲家庭而不适用于男性单亲家庭

