问题补充：
He is as a leader but he hasn’tin teaching.
A. success; many experiences
B. a success; much experience
C. great success; an experience
D. a great success; a lot of experiences
答案：
A. success; many experiences
(答案→)B. a success; much experience
C. great success; an experience
D. a great success; a lot of experiences
解析：抽象名词具体化，表示具有某种特征的人或事物，可用作可数名词。如：She is a success in business but a failure in marriage (她在事业上是个成功者，但在婚姻上是个失败者)；experience作为“经验”解，为不可数名词。
