四级阅读:英语选词填空练习
The typical pre-industrial family not only had a good many children, but numerous other dependents as well---grandparents, uncles, aunts and cousions. Such "extended" families were suited for survival in slow paced __1__ societies.
The typical pre-industrial family not only had a good many children, but numerous other dependents as well---grandparents, uncles, aunts and cousions. Such "extended" families were suited for survival in slow paced __1__ societies.