Jumping out of airplane at ten thousand feet is quite exciting experience.
A. /, the
B. /, an
C. an. an
D. the, the
网友回答
A. /, the
B. /, an
(答案→)C. an. an
D. the, the
解析：airplane 为可数名词，an airplane 表示泛指，而此处的experience表示“经历”，为可数名词，an exciting experience意为“一次刺激的经历”