What can his pension enough to pay for

A．refused to open his eyes until he had had his first cigarette
B．according to himself, did not open his eyes in case he had died in the night
C．denied that he opened his eyes until he had had his first died in the night
D．could not see anything when the first noises in the street woke him

A．Approaches to the commercial use of computers.
B．Conveniences brought about by computers in business.
C．Significance of automation in commercial enterprises.
D．Advantage of credit cards in business.