being a single parent

Almost _of all American families are single parent families.

If the trait transferred from the donor parent to the reincarnation parent is controlled by the recessive single gene, then the selection of the backcross progeny is required ( ) to separate the trait for easy selection.

Being a single parent, there is no way to the time and energy she has devoted to her children for the past 10 years.

Frequently single-parent children ________ some of the housework.

In the 1950s, the majority of the American households were __________-- a husband, wife, and two children. A: blended families B: stepfamilies C: single parent families D: nuclear families

1. These days, a problem for many (parent/parents) is deciding how to control internet addiction. A: parents B: parent C: parent D: parent

已知Parent类，创建该类对象的语句的是（ ）。 A: Parentzhang=create Parent() B: Parentzhang=new Parent() C: Parentzhang=new Parent D: Parentzhang=news Parent()

Which of the following causes the changes in the role of the child in the United States A: The growing number of single parent families. B: The growing complexity of the child's psychological needs. C: An increase in technology. D: A decrease in the child's intellectual capacities.

Which of the following is a possible cause of changes in the role of the child in the United States A: An increase in technology. B: The growing complexity of the child's psychological needs. C: A decrease in the child's intellectual capacities. D: The growing number of single parent families.