Boys and girls express differences in their feelings of math competence in ________, but these differences practically disappear by ________.
a. preschool; second grade c. preschool; freshman year
b. elementary school; sixth grade d. elementary school; senior year
Question 2
The final stage of labor is the
a. expulsion of the placenta. c. dilation of the cervix.
b. birth of the baby. d. expulsion of the amniotic fluid.