分群随机抽样法在市场调查中最典型的应用是( )。
A．收入分群抽样
B．地区分群抽样
C．消费分群抽样
D．年龄分群抽样
参考答案：B
He stays _____ home and looks _____ the photos of his children's _____ weekends. [ ]
A. in; of; at
B. at; at; on
C. to; for; at
D. at; in; at
坚持依法治国和以德治国相结合，更要强调发挥道德的教化作用。
