The best phrase that summarizes the main idea of the text is _______.
[A] handicapped students and their problems [C] computer assisted teaching programs
[B] videodisc and special education [D] normal children and handicapped kids

A．The special education mentioned in the text is mainly concerned with _______.
B．genius students from day-care centers to colleges
C．students who are fond of computer video games
D．teachers of language in the University of Arizona
E．students who are either mentally or physically disabled