We can safely conclude that ______ may cause educational problems.

A．The phenomenon of teaching to the test has aroused curiosity in many educators.
B．Skills in general are not only useless but often lead students astray.
C．Ability to read and write is one thing, and ability to do well on standardized tests is quite another.
D．Preparation for test of a skill does not necessarily mean the acquisition of that skill.

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