[问答题]
Around the mid-20th cent2it hscz;0,l(gu tmzaki*/ ;,lmq 4d lury, only uas xh(:) l6kbw13qp j20 percent of 18- to 34-year-old lived in their pasqu xp1b3lh kj6(w :)arents' home.
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年左右，只有五分之一（即20%）的年轻人fo1:ti hx m bo*fku6: *1m8nvl与父母同住，mid-20th century指1960年左右。
