以下不是明末清初统称“四王”的山水画家是（）。

A.王时敏

B.王鉴

C.王原祁

D.王致诚

"'Stranger-oriented' socialization system" in Paragraph 5 probably means ______.

A．strangers come home to take care of children

B．neighbors don't know each other

C．mothers work outside their home and become strange to their children

D．children become strange to their parents