【正确答案】 B

【答案解析】[听力原文]
The family is changing. In the past, grandparents, parents, and children used to live together; in other words, they had an "extended family". Sometimes two or more brothers with their wives and children were part of this large family group. But family structure is changing throughout the world. The "nuclear family" consists of only one father, one mother, and children; it is becoming the main family structure everywhere.
The nuclear family offers married women some advantages: they have freedom from their relatives, and the husband does not have all the power in the family. Family structure in most parts of the world is still "patriarchal"; that is, the father is the head of the family and makes most of the important decisions. Studies show, however, that in nuclear families, men and women usually make an equal number of decisions about family life. Also, well-educated husbands and wives often prefer to share the power.
But wives usually have to "pay" for the benefits of freedom and power. When women lived in extended families, sisters, grandmothers, and aunts helped one another with housework and childcare. In addition, older women in a large family group had important positions. Wives in nuclear families do not often enjoy this benefit, and they have another disadvantage, too: women generally live longer than their husbands, so older women from nuclear families often have to live alone.
Studies show that women are generally less satisfied with marriage than men are. In the past, men worked outside the home and women worked inside. Housework and childcare were full-time jobs, and there was no time for anything else. Of course, this situation is changing. Women now work outside the home and have more freedom than they did in the past. Why are some women still discontent?
In most parts of the world today, women work because the family needs more money. However, their outside jobs often give them less freedom, not more, because they still have to do most of the housework. The women actually have two full-time jobs, one outside home and another inside, and not much free time.
The nuclear family will probably continue to be the main family form of the future. Change, however, usually brings disadvantages along with benefits, and the family forms of the past had many advantages.

[解析] 本题为推断题。从“…and they have another disadvantage，too: women generally live longer than their husbands，so older women from nuclear families often have to live alone”一句中可知，妇女通常比她们的丈夫活得长，所以有许多老年妇女不得不独自一人生活，因此答案选B。