问题补充：
The value of a leader is something to be felt and experienced. can it be put into words.
A. Purely
B. Partly
C. Rarely
D. Gradually
答案：
A. Purely
B. Partly
(答案→)C. Rarely
D. Gradually
解析：词义辨析。A. 纯粹的 B. 部分的 C. 很少的；难得 D. 渐渐地。句意：领导的重要性是需要感觉和经历的，很难用语言表达出来。故选C。
