4. According to the passage， in the period prior to 1975， each of the following considerations helped determine whether a union would attempt to organize a certain group of clerical workers EXCEPT
（A） the number of clerical workers in that group
（B） the number of women among the clerical workers in that group
（C） whether the clerical workers in that area were concentrated in one workplace or scattered over several workplaces
（D） the degree to which the clerical workers in that group were interested in unionization
（E） whether all the other workers in the same jurisdiction as that group of clerical workers were unionized
5. The author states that which of the following is a consequence of the women’s movement of recent years？
（A） An increase in the number of women entering the work force
（B） A structural change in multi-occupational public-sector unions
（C） A more positive attitude on the part of women toward unions
（D） An increase in the proportion of clerical workers that are women
（E） An increase in the number of women in administrative positions
6. The main concern of the passage is to
（A） advocate particular strategies for future efforts to organize certain workers into labor unions
（B） explain differences in the unionized proportions of various groups of public-sector workers
（C） evaluate the effectiveness of certain kinds of labor unions that represent public-sector workers
（D） analyzed and explain an increase in unionization among a certain category of workers
（E） describe and distinguish strategies appropriate to organizing different categories of workers
