说明
illness/sickness/disease
核心问题
（1）The business of doctors is to prevent and cure ____. A. disease B. sickness C. illness D. unhappiness
(2) She died after a long ____. A. disease B. sickness C. illness D. weakness
试题(1)的答案为 disease,而试题(2)的答案却是 illness。这是怎么回事呢?
词典解答
见 disease。