This passage appears to be a part of introduction to ______.

A．be delayed without leaders with inspiring personal qualities
B．not happen without heroes making the necessary sacrifices
C．take place if there were heroes to lead the people
D．produce leaders with attractive personalities

A．the forerunner of the preschool movement
B．a philosopher supporting a study of ancient history
C．a teacher insisting significance of education for parents
D．able to establish his school