We first think of the traditional or nuclear family．This is a tw

We first think of the traditional or nuclear family．This is a two-generation family,the father and the mother and their own children．Most couples wanted to have four children,two boys,two girls. Some nuclear families,however,may add one or more grandparents to come to live with them,that is three generations．This kind of family with grandparents,parents,and grandchildren is called an extended family．This family type was not very common during the later half of the twentieth century,but it's becoming more common now as an elderly grandparent moves in to live with a son or daughter．This is more possible now that American homes have become larger．What is interesting,however,is that after the grandchildren move out of the home and start their own families,this extended family shrinks back to a nuclear family,with just two generations again living together,a grandparent and parents,with the grandchildren coming only for occasional visits． Now,the fatherless or motherless family is one kind of what we call a single-parent family．In the fatherless family it's just the mother and her children．As I said,this can be the result of the husband's death,of an unmarried mother,of a separation or divorce．There are also a growing number of motherless families--where the father raises the children,for any of the same reasons．A motherless family may also be fatherless,but still a family with one adult．This is becoming more common in the big cities where a grandmother will raise her daughter's children while the daughter goes elsewhere to work. One other new kind of family is becoming increasingly more common．A single parent with one or more children will marry again．Perhaps the other parent is also a single parent．Together they will start what is called a blended family,which blends together or combines the children from two other families. Who usually looks after the children in a both motherless and fatherless family in America?
A、The children's aun
B、The children's nursery or schoo
C、The children's grandmothe
D、The children's neighbou
【正确答案】：C
【题目解析】：根据文章内容，对于无父无母的家庭（即父母双方都不在的家庭），文章提到在大城市中，这种家庭通常由祖母抚养孙辈，而女儿则去其他地方工作。这表明在父母双方都不在的家庭中，祖母通常会承担起照顾孩子的责任。 A选项（孩子的阿姨）在文章中并未提及为通常照顾孩子的人选。 B选项（孩子的托儿所或学校）虽然可能涉及到孩子的日常教育或照顾，但并非特指在家庭中的照顾者。 C选项（孩子的祖母）与文章描述的情境相符，即祖母在父母都不在的情况下照顾孩子。 D选项（孩子的邻居）同样在文章中并未被提及为照顾孩子的通常人选。 因此，正确答案是C，即孩子的祖母。