随着婚姻制度进步,子女由“知其母而不知其父”过渡到“既知其母又知其父”发生在( )
A:南方古猿时期
B:晚期猿人时期
C:母系氏族社会时期
D:父系氏族社会时期
把下面的图片与所给的描述对号入座。A B C D E____ He is of medium height and build, with two small eyes. He is a pop singer. And he likes playing basketball very much. He is very popular with young people.____ He is short and of medium build. He has short black hair. He is a funny actor.____ She is heavy. She has short brown hair. She always wears glasses. She sings very well.____ He is very tall and has short black hair. He is a basketball player, and he plays it very well. Now he is a college student in Shanghai Jiaotong University.____ She is thin, with long black hair and big eyes. She is a movie star. She is in the play "Palace", and she is very popular with young people.
20世纪20年代,有作家说:“他们在各个角落织补支离破碎的工业网,重新组织俄国的商业,促使俄国大地开始复苏”,与这段材料描述有关的是( )
冬至日(12月22日)凌晨4点(地方时),一架飞机从甲地(60°N、100°W)起飞,沿最近航线匀速飞行,8小时后抵达乙地(60°N、80°E)。据此回答下列问题。