第8章 16. It was rare and commendable to treat them thoughtfully and equally. Doctor Pare had the ____ spirit to win his fame. A. noble B. novel C. common D. rare 17. What are special about the Roman numeral system? 18. The boiling oil could sterilize the wound of gunpowder, but the procedure was rather ____. A. cruel B. brutal C. fierce D. tough 19. What kind of comparison did Pare practice? 20. What language did Pare use when he was writing his book?