We can safely conclude that ______ may cause educational problems.

A．illustrate her cleverness in test-taking.
B．reveal the incompetence of teachers
C．show there is something wrong with the current practice in teaching
D．demonstrate the best way to read textbooks

A．mandated state tests be replaced by some more sensible methods of assessment
B．teachers pay more attention to the nature and quality of what is taught
C．students not be concerned with grades but do more reading and thinking
D．radical changes be brought about in the general approach to teaching