【题目】It is not rare in that people fifties are going to university for further education.
A.90s; theB.the 90s; /C.90s; theirD.the 90s; their
在线课程【答案】D
【解析】
考查数词。句意：九十年代人们五十多岁时上大学深造并不稀罕。在几十年代，在数词复数前加定冠词，即in the 90s；在某人多少多岁时，是在数词复数前加形容词性的物主代词，即：in one’s fifties。故选D。