Mr. and Mrs. Pfile arrived at Reader's Digest Headquarters in Pleasantville, New York by_______.

A．Necessity is the mother of invention.
B．An ounce of prevention is worth a pound of cure.
C．Don't count your chickens before they are hatched
D．Join the unhooked generation.

A．William Faulkner's work focuses on several troubled problems of southern America.
B．William Faulkner died one hundred years ago.
C．Although William Faulkner could not graduate from high school, he had great interests in writing.
D．William Faulkner once took part in the army when he was young.