University is most worthwhile time of discovery and learning, and it is also very enjoyab

University is most worthwhile time of discovery and learning, and it is also very enjoyable and valuable experience for every one of us.
A. a；a
B. a；/
C. /；a
D. a；he

(答案→)A. a；aB. a；/C. /；aD. a；he解析：第一空用不定冠词 a. 与most连用, most相当于 very, 只有在特定范围中表示 “最……” 才可以用最高级。experience 用作“经历”之意时，为可数名词，要与不定冠词连用。

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