18. The author mentions all of the following inventions as examples of dramatic technological innovations EXCEPT the
(A) sewing machine
(B) vacuum cleaner
(C) typewriter
(D) telephone
(E) spinning jenny
19. It can be inferred from the passage that, before the Industrial Revolution, the majority of women’s work was done in which of the following settings?
(A) Textile mills
(B) Private households
(C) Offices
(D) Factories
(E) Small shops
20. It can be inferred from the passage that the author would consider which of the following to be an indication of a fundamental alteration in the conditions of women's work?
(A) Statistics showing that the majority of women now occupy white-collar positions
(B) Interviews with married men indicating that they are now doing some household tasks
(C) Surveys of the labor market documenting the recent creation of a new class of jobs in electronics in which women workers outnumber men four to one
(D) Census results showing that working women’s wages and salaries are, on the average, as high as those of working men
(E) Enrollment figures from universities demonstrating that increasing numbers of young women are choosing to continue their education beyond the undergraduate level
21. The passage states that, before the twentieth century, which of the following was true of many employers?
(A) They did not employ women in factories.
(B) They tended to employ single rather than married women.
(C) They employed women in only those jobs that were related to women’s traditional household work.
(D) They resisted technological innovations that would radically change women’s roles in the family.
(E) They hired women only when qualified men were not available to fill the open positions.
