题目内容：
阅读材料，回答题：New Changes in American Life
Once it was possible to define male and female roles easily by the division of laB．or. Menworked outside the home and earned the income to support their families, while women cooked themeals and took care of the home and the children. __________ (46) but by the middle of this centu-ry, men's and women's roles were becoming less firmly fixed.
In the 1950s, economicand social success was the goal of the typical American. but in the1960s a new force developed called the counterculture. __________(47)The counterculture presen-ted men and women with new role choices. Taking more interest in childcare, men began to sharechild-raising tasks with their wives. In fact, some young men and women moved to communalhomes or farms where the economiC．and childcare responsibilities were shared equally by both se-xes.__________(48) Some young men refused to be drafted as soldiers to fight in the war in Viet-nam.
In terms of numB．ers, the counterculture was not A．very large group of people. __________ (49)Working men of all classesbegan to change their economicand social patterns. Industrial workersand business executives alike cut down on "overtime" work so that they could spend more leisuretime with their families. Some doctors, lawyers, and teachers turned away from high paying situa-tions to practice their professions in poorer neighborhoods.
In the 1970s, the feminist movement, or women's liB．eration, produced additional economicand social changes. Women of all ages and at all levels of society were entering the work force ingreater numbers. __________ (50) but some women began to enter traditionally male occupations :
police work, banking, dentistry, and construction work. Women were asking for equal work, andequal opportunities for promotion.
Today the experts generally agree that important changes are taking place in the roles of menand women. Naturally, there are difficulties in adjusting to these transformations.
A．In addition, many Americans did not value the traditional male role of soldier.
B．Most of them still took traditional women's jobs as publicschool teaching, nursing, andsecretarial work.
C．These roles were firmly fixed for most people, and there was not much opportunity forwomen to exchange their roles.
D．but its influence spread to many parts of American society.
E．The people involved in this movement did not value the middle-class American goals.
F．A．great many jobs that used to belong to men are now taken by women.
根据上面选项，回答（46）题
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