单选题 One of the most significant elements of age stratification in all cultures is the pattern of experiences connected to marriage and parenting--a pattern that sociologists call the family life cycle. In North America, about 90 percent of adults marry, and the great majority of them have children and thus a family life cycle related to family experiences. When the family's first child is born, the parents embark on a sequence of experiences linked to the child's development--from infancy and toddlerhood, through school age and adolescence, and eventually, to departure from the nest. Each of these periods in the child's life makes a different set of demands on the parents.

单选题 The phrase embark on in the passage is closest in meaning to

A、 ttempt
B、 begin
C、 iscuss
D、 avoid

【正确答案】 B

【答案解析】Embark on means begin in this context. Clues: When the family 's first child is born, the parents a sequence of experiences (1.3)

单选题 It can be inferred from the passage that the family life cycle

A、 takes place whether or not people have children
B、 does not occur in cultures outside of North America
C、 must be redefined from one generation to the next
D、 shapes several years in the lives of most adults

【正确答案】 D

【答案解析】You can infer that the family life cycle shapes several years in the lives of most adults. Clues: ...from infancy and toddlerhood.., and eventually, to departure from the nest. Each of these periods in the child's life makes a different set of demands on the parents.