[问答题]
Around the mid-20th cent6zxt651 um jiuz2n0thxjjk (7ury, only 20 percent ,g8 1fg wn3kqsof 18- to 34-year-old lived in their parents' home.1k8w q3ggf s,n
参考答案: B
本题详细解析: 同义转述题。定位到B段最后一句，1960年左6wq(w/q. xe7x ma kre:右，只有五分之一（即20%）的年轻人与父母同住，mid-20th century指1960年左右。
