now you know how___single moment can make one feel like__hour?A a;a B a;an C an;a D an;an

问题描述:

now you know how___single moment can make one feel like__hour?A a;a B a;an C an;a D an;an
选哪个?请翻译一下这句话

B. a ; an 冠词用于元音单词前的基本规则
a single moment ... feel like an hour
意思是:你现在可以了解一个短暂片刻有时能让人感觉像一个钟头那么长.