It is not rare in that people in fifties are going to university for further education.A.

问题补充：

It is not rare in that people in fifties are going to university for further education.

A. 90s, the

B. the 90s, /

C. 90s, their

D. the 90s, their

答案：

A. 90s, the

B. the 90s, /

C. 90s, their

(答案→)D. the 90s, their

解析：此题第一空考查年代表示法。英语中 “年代”用数词的复数形式表示, 前面需加定冠词, 例如：八十年代：the eighties/ 80s/ 80’s, 但不可以写成eighty’s。第二空考查年龄的表示法。in one’s fifties “五十多岁”；in one’s late fifties“五十七、八岁”；in one’s early fifties“五十二、三岁”。“in + one’s +基数词的复数”表示“某人几十多岁时”也是高考中有关数词的命题热点。