Question

【题目】It's never too old to learn. Karl Marx began to learn English in his______.

A. fifties B. fiftieth C. fifty D. the fiftieth

Answer 1

【答案】A

【解析】

句意：活到老，学到老。卡尔·马克思在他五十几岁的时候开始学英语。in one's + 基数词（整十）复数，表示在“某人……岁”的时候。in his fifties在他五十多岁的时候，故答案为A。