核心问题
（1）In 1960s, a British car company which made very expensive cars was about to sell its latest car in Germany. [《高中英语教科书》第三册(上), 人教社, p.28]
(2) 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(上海高考,99-6)
上面试题的答案为 D。这说明在表示年代的词之前必须用定冠词，而在句(1)中，1960s 之前无定冠词。请问孰是孰非？
词典解答
《高中英语教科书》中的 in 1960s 是错误的,应改为 in the 1960s。请看下面的例证:
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In the 1850's many peasants in England were so poor that they lived mainly on potatoes. (SEFC,3A,p.98) 在19世纪50年代，许多英国农民都很贫穷，以致主要以土豆为食。
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In the 1980's, China changed a lot. 20世纪80年代中国发生了很大变化。