问题补充：
She was caught in heavy rain on her way to the lonely island, which was quite experience.
A. a；/
B. /；an
C. a；an
D. a；a
答案：
A. a；/
B. /；an
(答案→)C. a；an
D. a；a
解析：不定冠词用在某些抽象名词或物质名词前，表示“一种，一份，一类，一场，一阵……”。如:It is a wonderful coffee(一份咖啡).当experience作“经历” 讲时是可数名词，作“经验” 讲时是不可数名词。
