He is as a leader but he hasn't in teaching.
A. success; many experiences
B. a success; much experience
C. great success; an experience
D. a great success; an experience
网友回答
A. success; many experiences
(答案→)B. a success; much experience
C. great success; an experience
D. a great success; an experience
解析：success本意为不可数名词，如果表示具体的某件事成功，可以用作或可数名词。experience作“经验、体验”讲是不可数名词，作“经历”讲是可数名词。