Men could directly turn back to Greece and Rome for instruction, for correction, and for inspiration in the following fields of their work except ______.

A．they could obtain the first-hand materials
B．they could understand Greek and Latin
C．they were more intelligent than modem men
D．they were inspired by Roman and Greek literature

A．bacteria can be most easily killed by removal of moisture
B．drying out a house will eliminate the risk of airborne infection
C．hot-Mr heating is better than steam heating because steam heating uses water
D．none of the above