[单项选择]冷却水最好使用（）即含盐类矿物质少的水，如雨水、河水、自来水等。
A. 蒸馏水
B. 硬水
C. 软水

Galen, Andress Veaslius, and William Harvey were important figures in the history of man’s study of his own body. Galen, a Greek who practiced medicine in Rome in the second century A. D., contributed immeasurably to the understanding of anatomy (解剖学). His dissections (解剖) were limited to Barbary apes, however, because Roman religious and philosophical attitudes made experimentation on the human body unthinkable. Even so, his reputation was so outstanding and his conclusions were so logical that his writings on anatomy and physiology were accepted by medical men for more than a thousand years.
Vesalius, a Belgian who went to Paris to study medicine, made the first major successful challenge of the teachings and the theories of Galen. Vesalius shocked his professors by proposing that knowledge of human anatomy should be learned from human bodies. No one took him seriously because there was a French law prohibiting dissection of the human body. Vesalius, never
A. nationality
B. medical training
C. field of research
D. profession