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我国目前的企业年金计划均实行确定缴费计划(DC计划)，（）不是退休时个人账户资产的组成部分。
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如果某股票的β值为0.6，市场组合预期收益率为15%，无风险利率为5%时，该股票的期望收益率为（）。
One method of preventing or alleviating depression Not mentioned by the author is the use
However, there are ethnic groups who still (11)_____ together, who speak their own languages and have preserved many of their old customs. There are Hispanic (12)_____, e.g. Mexicans, Cubans, Puerto Ricans, most of whom still speak Spanish as their (13)_____ language. There are the American Indians and (14)_____ Asian groups, all of whom speak their own languages. Then there are the 20 million blacks, who, (15)_____ they speak English, for the most part live separately. Many blacks are beginning to (16)_____ their roots right back to the African tribes (17)_____ which their ancestors were torn in the days of slavery and some of them are (18)_____ themselves more and more with Africa. Some black leaders (19)_____, reminding them that their culture and their language are not African. They are American. But many blacks are (20)_____ bitter against white culture to feel American.
In the 1950s, economic and social success was the goal of the typical American. But in the 1960s a new force developed called the counterculture. The people involved in this movement did not value the middle-class American goals. The counterculture presented men and women with new role choices. Taking more interest in child care, men began to share child-raising tasks with their wives. In fact, some young men and women moved to communal homes or farms where the economic and child care responsibilities were shared equally by both sexes. In addition, many Americans did not value the traditional male role of soldier. Some young men refused to be drafted as soldiers to fight in the war in Vietnam.
In terms of numbers, the counterculture was not a very large group of people. But its influence spread to many parts of American society. Working men of all classes began to change their economic and social patterns. Industrial workers and business executives alike cut down on "over-time" work so that they could spend more leisure time with their families. Some doctors, lawyers, and teachers turned away from high paying situations to practice their professions in poorer neighbourhoods.
In the 1970s, the feminist movement, or women's liberation, produced additional economic and social changes. Women of all ages and at all levels of society were entering the work force in greater numbers. Most of them still took traditional women's jobs such as public school teaching, nursing, and secretarial work. But some women began to enter traditionally, male occupations: police work, banking, dentistry, and construction work. Women were asking for equal work, and equal opportunities for promotion.
Which of the following best expresses the main point of Paragraph 1？______
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