Crimes of violence appear to be quite （）, but psychologists can usually find a motive hidden away in the criminal's childhood.

A．Stories that he had heard from friends or chance acquaintances
B．Stories that he had read about in newspapers or other secondary sources
C．Stories that came to him in periods of meditation or in dream
D．Stories that he had lived rather than read about
E．Hemingway’s obsession for geographic details progressively overshadowed the dramatic element of his stories

A．One can learn about life only by living it fully.
B．A wise person will read widely in order to learn about life.
C．Knowledge is a powerful tool that should be reserved only for those who know how to use it.
D．Experience is a poor teacher.