Passage Two Questions 29 to 32 are based on the passage you have just heard.

A．Because nobody knew his address.
B．Because nobody knew his age.
C．Because Penury’s private life was a secret.
D．Because Penury was still a bachelor at the age of forty-five.

A．The early history of bookbinding.
B．How old books become valuable.
C．Economical ways to protect old books.
D．Why some books decay.