—Did you listen to Mr.Jackson’s lecture ?— Yes I have never heard a one.A. more excitingB

问题补充：

—Did you listen to Mr.Jackson’s lecture ?

— Yes，I have never heard a one.

A. more exciting

B. more excited

C. most exciting

D. most excited

答案：

A. more exciting

(答案→)B. more excited

C. most exciting

D. most excited

解析：这题考查的是形容词的用法：exciting“令人兴奋的”，修饰物，excited“兴奋的”修饰人，否定词和比较级连用表示肯定意义，句意是：--你听Jackson的演讲吗？--是的，我从来没听过更令人兴奋的演讲了。选B。