初中英语单选,请指教

题目

初中英语单选,请指教
21.-- How about ______car exhibition?-- I should say it was ______ success.
A.the,a B.the,/ C.a,a D.a,/
23.He is a teacher with a lot of ______.He often tells us many of his interesting _____ in Africa.
A.experiences; experiencex05 B.experience; experience
C.experience; experiencesx05 D.experienced; experience
为什么选A和c,能说明下吗

答案

1.A.the car exhibition 那个车展,指的是特指的那个车展,用定冠词.
a sucess 一个成功.泛指,用不定冠词a.
2.experience作经验讲,不可数,所以不能加s.
作经历讲的时候,是可数名词,可以加s.
不懂的继续追问哈.