Questions 11--13 are based on the following dialogue. You now have 15 seconds to read Questions 11--13.

When did the man buy the radio

A．the difficulties in teaching spelling.
B．the role of spelling in general language development.
C．the complexities of the basic writing skills.
D．the necessity of teaching spelling.

A．its raising of the corporate stock price.
B．its self-examination of the soul.
C．its neglect of social responsibility.
D．its emphasis on creative freedom.